{"title":"Power Modules","description":"Power supply, charging, and voltage conversion modules for battery-powered and embedded projects.","products":[{"product_id":"xwst-dc-12v-24v-to-dc-5v-buck-converter-1a","title":"XWST DC-DC Buck Converter — 12V\/24V to 5V (1A \/ 2A \/ 3A) IP67 Waterproof","description":"\u003cstyle\u003e\n  @import url('https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:wght@400;500;600;700\u0026display=swap');\n  .nzn-desc .tagline{font-family:'DM Sans',sans-serif;font-size:17px;line-height:1.7;color:#333;border-left:3px solid #e07e2c;padding-left:16px;margin-bottom:32px}\n  .nzn-desc .section-title{font-family:'DM Sans',sans-serif;font-size:15px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#e07e2c;margin-bottom:14px}\n  .nzn-desc .specs-table{width:100%;border-collapse:collapse;margin-bottom:32px;font-family:'DM Sans',sans-serif;font-size:14px}\n  .nzn-desc .specs-table tr{border-bottom:1px solid #ebebeb}\n  .nzn-desc .specs-table tr:last-child{border-bottom:none}\n  .nzn-desc .specs-table td{padding:10px 8px}\n  .nzn-desc .specs-table td:first-child{color:#888;width:42%;font-size:14px}\n  .nzn-desc .specs-table td:last-child{font-weight:600;color:#1a1a1a}\n  .nzn-desc .uses-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:32px}\n  .nzn-desc .use-item{background:#f7f7f7;border-left:3px solid #e07e2c;padding:12px 14px;font-family:'DM Sans',sans-serif;font-size:13.5px;line-height:1.5;color:#2a2a2a}\n  .nzn-desc .note{background:#fafafa;border:1px solid #e8e8e8;border-radius:4px;padding:14px 16px;font-family:'DM Sans',sans-serif;font-size:13px;color:#888;line-height:1.6}\n  .nzn-desc .note strong{color:#555}\n  .nzn-desc .setup-box{background:#f0f7ff;border-left:3px solid #4a90d9;padding:14px 16px;font-family:'DM Sans',sans-serif;font-size:13px;color:#2c4a6e;line-height:1.7;margin-bottom:32px;border-radius:0 4px 4px 0}\n  .nzn-desc .faq-item{margin-bottom:12px}\n  .nzn-desc .faq-q{font-family:'DM Sans',sans-serif;font-size:13.5px;font-weight:700;color:#1a1a1a;margin-bottom:3px}\n  .nzn-desc .faq-a{font-family:'DM Sans',sans-serif;font-size:13.5px;color:#555;line-height:1.5;padding-left:14px;border-left:2px solid #e07e2c}\n  .nzn-desc hr.divider{border:none;border-top:1px solid #ebebeb;margin:28px 0}\n\u003c\/style\u003e\n\u003cdiv class=\"nzn-desc\" style=\"max-width:1200px;margin:0 auto;\"\u003e\n\n  \u003cp class=\"tagline\"\u003eSteps down 12V or 24V DC to a stable, regulated 5V output. IP67 waterproof sealed inside a rugged aluminium housing — built for permanent installation in automotive, marine, 3D printer, and solar applications. Available in 1A, 2A, and 3A output variants.\u003c\/p\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"section-title\"\u003eSpecifications\u003c\/p\u003e\n  \u003ctable class=\"specs-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e12V – 24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e5V DC (regulated)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOutput Current\u003c\/td\u003e\n\u003ctd\u003e1A \/ 2A \/ 3A — select variant\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eConversion Efficiency\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;93%\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRipple (full load)\u003c\/td\u003e\n\u003ctd\u003e40mV\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eNo-Load Current\u003c\/td\u003e\n\u003ctd\u003e3.5mA\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWaterproof Rating\u003c\/td\u003e\n\u003ctd\u003eIP67\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eAluminium alloy\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBody Dimensions\u003c\/td\u003e\n\u003ctd\u003e44 × 25 × 22mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eMounting Hole\u003c\/td\u003e\n\u003ctd\u003e4mm diameter, 51mm spacing\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eProtection\u003c\/td\u003e\n\u003ctd\u003eOver-temperature, short circuit\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e45g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"section-title\"\u003eVariant Guide\u003c\/p\u003e\n  \u003ctable class=\"specs-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1A (5W)\u003c\/td\u003e\n\u003ctd\u003eArduino, ESP32, small sensors, webcam, single LED strip controller\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e2A (10W)\u003c\/td\u003e\n\u003ctd\u003eRaspberry Pi 3\/Zero, BTT HDMI display, Klipper host, USB charging\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e3A (15W)\u003c\/td\u003e\n\u003ctd\u003eRaspberry Pi 4\/5, Pi + display + webcam combined, multiple USB devices\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"section-title\"\u003eWiring\u003c\/p\u003e\n  \u003ctable class=\"specs-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRed (Input)\u003c\/td\u003e\n\u003ctd\u003e12V – 24V positive\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBlack (Input)\u003c\/td\u003e\n\u003ctd\u003eGround \/ negative\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eRed (Output)\u003c\/td\u003e\n\u003ctd\u003e5V positive out\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003eBlack (Output)\u003c\/td\u003e\n\u003ctd\u003eGround \/ negative out\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n  \u003cdiv class=\"setup-box\"\u003eInput and output wire pairs are pre-attached — connect input wires to your 12V\/24V supply and output wires to your device. The input and output share a common ground; do not reverse polarity on the input side.\u003c\/div\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"section-title\"\u003eWhat's Included\u003c\/p\u003e\n  \u003ctable class=\"specs-table\"\u003e\n    \u003ctr\u003e\n\u003ctd\u003e1 ×\u003c\/td\u003e\n\u003ctd\u003eXWST waterproof buck converter (selected current variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003ePre-attached\u003c\/td\u003e\n\u003ctd\u003eInput wires (red\/black) + output wires (red\/black)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"section-title\"\u003eCommon Uses\u003c\/p\u003e\n  \u003cdiv class=\"uses-grid\"\u003e\n    \u003cdiv class=\"use-item\"\u003e3D printing — power Raspberry Pi Klipper host from 12V\/24V PSU\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eAutomotive — USB charging \u0026amp; device powering from 12V supply\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eCamper van, caravan \u0026amp; boat 12V systems requiring 5V accessories\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eSolar battery systems — clean 5V rail from 12V or 24V battery bank\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003ePowering Arduino, ESP32 \u0026amp; microcontrollers from existing 12V supply\u003c\/div\u003e\n    \u003cdiv class=\"use-item\"\u003eIoT sensor nodes \u0026amp; embedded systems requiring permanent 5V\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"section-title\"\u003eCommon Questions\u003c\/p\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eCan this power a Raspberry Pi 4?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes — select the 3A variant. The Pi 4 draws up to 1.2–2A under load; the 3A variant provides comfortable headroom, especially if you have a display or USB devices attached.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eWill it work from a 12V car battery?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. The input range is 12–24V DC, making it ideal for vehicle, caravan, and marine use. Engine start voltage dips are handled by the wide input range.\u003c\/div\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"faq-item\"\u003e\n    \u003cdiv class=\"faq-q\"\u003eIs the IP67 rating genuine — can I mount it outdoors?\u003c\/div\u003e\n    \u003cdiv class=\"faq-a\"\u003eYes. IP67 means it's fully dust-tight and can withstand temporary submersion in water. It's suitable for outdoor enclosures and under-bonnet mounting provided the wire connections themselves are weatherproofed.\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003chr class=\"divider\"\u003e\n\n  \u003cp class=\"note\"\u003e\u003cstrong\u003ePlease note:\u003c\/strong\u003e Select the correct current variant for your load. Running a device continuously near the rated maximum will reduce lifespan. Weight 45g. Mounting hole diameter 4mm, spacing 51mm.\u003c\/p\u003e\n\n\u003c\/div\u003e","brand":"NZN Electronics","offers":[{"title":"1A (5w)","offer_id":42648041750624,"sku":"XWST-BUCK-12-24-5V-1A","price":10.99,"currency_code":"NZD","in_stock":true},{"title":"2A (10w)","offer_id":42678133719136,"sku":"XWST-BUCK-12-24-5V-2A","price":11.99,"currency_code":"NZD","in_stock":false},{"title":"3A (15w)","offer_id":42678133751904,"sku":"XWST-BUCK-12-24-5V-3A","price":12.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/XWST-2A-Main-Banner.png?v=1778273245"},{"product_id":"tp4056-usb-c-lithium-battery-charging-module-5v-1a-18650-protection","title":"TP4056 USB-C Lithium Battery Charging Module – 5V 1A, 18650 Protection","description":"\u003cstyle\u003e\n.nznpd{--o:#F57C00;--od:#E65100;--ink:#0F172A;--mut:#5b6573;--line:#E8ECF0;--soft:#F7F8FA;max-width:1120px;margin:0 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var(--line);border-radius:12px;background:#fff;padding:0 16px;transition:border-color .18s ease}\n.nznpd__faq[open]{border-color:#FCE0C6}\n.nznpd__faq summary{list-style:none;cursor:pointer;padding:15px 0;font-weight:700;font-size:14px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px}\n.nznpd__faq summary::-webkit-details-marker{display:none}\n.nznpd__faq summary::after{content:\"\\203A\";flex:0 0 auto;color:var(--o);font-weight:800;font-size:20px;line-height:1;display:inline-block;transform:rotate(90deg);transition:transform .22s ease}\n.nznpd__faq[open] summary::after{transform:rotate(-90deg)}\n.nznpd__faq p{padding:0 0 16px;font-size:14px}\n.nznpd__faq[open] p{animation:nznpdReveal .24s ease}\n@keyframes nznpdReveal{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}\n.nznpd p.nznpd__note{margin-top:16px;background:var(--soft);border:2px solid var(--line);border-radius:12px;padding:14px 16px;font-size:13.5px;color:var(--mut);line-height:1.55}\n@media(prefers-reduced-motion:reduce){.nznpd__faq summary::after{transition:none}.nznpd__faq[open] p{animation:none}}\n@media(max-width:749px){.nznpd__checks{column-count:1}.nznpd__uses{grid-template-columns:1fr}.nznpd__spec{grid-template-columns:1fr;gap:2px}}\n\u003c\/style\u003e\n\u003cdiv class=\"nznpd\"\u003e\n\u003cdiv class=\"nznpd__lead\"\u003e\n\u003cp class=\"nznpd__intro\"\u003eThe TP4056 is a 2-in-1 USB-C lithium battery charging and protection module — it charges a single-cell 18650 or other Li-ion\/LiPo battery while guarding against overcharge and over-discharge, and automatically controls the charging current to protect the cell. With a charge status LED, a USB-C input, and breakout pads for DIY wiring, it's the standard building block for portable and battery-powered projects.\u003c\/p\u003e\n\u003cbr\u003e\n\u003cul class=\"nznpd__checks\"\u003e\n\u003cli\u003eUSB-C input — 4.5V to 5V, up to 1000mA charge current\u003c\/li\u003e\n\u003cli\u003eBuilt-in overcharge, over-discharge and over-current protection\u003c\/li\u003e\n\u003cli\u003eCC-CV charging with soft-start and trickle pre-charge below 2.9V\u003c\/li\u003e\n\u003cli\u003eCharge cut-off voltage: 4.2V ±1%\u003c\/li\u003e\n\u003cli\u003eOver-discharge protection: 2.5V \/ 3A\u003c\/li\u003e\n\u003cli\u003eAutomatic load switching — draws from input when present, battery when not\u003c\/li\u003e\n\u003cli\u003eRed LED indicator — flashing while charging, solid when full\u003c\/li\u003e\n\u003cli\u003eOUT terminals supply battery (cell) voltage, not 5V\u003c\/li\u003e\n\u003cli\u003eCompact 2.8cm × 1.7cm board\u003c\/li\u003e\n\u003cli\u003eSolder pads for battery (B), load (OUT) and direct 5V input\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eSpecifications\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cdiv class=\"nznpd__specs\"\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eModel\u003c\/span\u003e\u003cstrong\u003eTP4056 charge controller IC\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eInput Connector\u003c\/span\u003e\u003cstrong\u003eUSB-C (female), plus direct 5V solder pads\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eInput Voltage\u003c\/span\u003e\u003cstrong\u003e4.5V – 5V\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eMax Charge Current\u003c\/span\u003e\u003cstrong\u003e1000mA (1A)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eCharge Method\u003c\/span\u003e\u003cstrong\u003eConstant current \/ constant voltage (CC-CV)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003ePre-charge\u003c\/span\u003e\u003cstrong\u003eSlow trickle charge below 2.9V, full rate above\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eSoft-start\u003c\/span\u003e\u003cstrong\u003eYes — limits inrush current\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eCharge Termination\u003c\/span\u003e\u003cstrong\u003eWhen current falls to ~1\/10 of the set rate at the 4.2V float\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eCharge Cut-off Voltage\u003c\/span\u003e\u003cstrong\u003e4.2V ±1%\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eOver-discharge Protection\u003c\/span\u003e\u003cstrong\u003e2.5V cutoff \/ 3A\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBattery Type\u003c\/span\u003e\u003cstrong\u003eSingle-cell Li-ion \/ LiPo (e.g. 18650)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eOutput (OUT) Voltage\u003c\/span\u003e\u003cstrong\u003eBattery \/ cell voltage — not 5V\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eStatus Indicator\u003c\/span\u003e\u003cstrong\u003eSingle red LED — flashing while charging, solid when full\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eTemperature Monitoring\u003c\/span\u003e\u003cstrong\u003eNot provided\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBoard Size\u003c\/span\u003e\u003cstrong\u003e2.8cm × 1.7cm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eConnections\u003c\/span\u003e\u003cstrong\u003eUSB-C \/ 5V input, B+\/B- battery, OUT+\/OUT- load\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eWhat's in the pack\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cdiv class=\"nznpd__included\"\u003e\n\u003cdiv class=\"nznpd__qty\"\u003e×\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003eTP4056 USB-C Charging Modules\u003c\/strong\u003e\n\u003cp\u003eQuantity as selected. Ready to wire — no additional components required.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eGreat for\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cdiv class=\"nznpd__uses\"\u003e\n\u003cdiv class=\"nznpd__use\"\u003e18650 and Li-ion\/LiPo battery charging circuits\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003ePortable Arduino, ESP32 and Raspberry Pi projects\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003ePower banks and battery backup builds\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eSolar charging setups (with appropriate input regulation)\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eRobotics and wearable electronics\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eDIY battery packs needing overcharge protection\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003cdiv class=\"nznpd__qs\"\u003e\n\u003ch3\u003eGetting started\u003c\/h3\u003e\n\u003col class=\"nznpd__steps\"\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eIdentify the pads\u003c\/strong\u003e\n\u003cp\u003eThe USB-C port (and its adjacent +\/- pads) is the 5V power input. B+ connects to the lithium battery's positive terminal and B- to negative. OUT+ and OUT- connect to your load, such as a boost converter — note these supply the battery's cell voltage, not 5V.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect the battery first\u003c\/strong\u003e\n\u003cp\u003eSolder B+ to the battery's positive terminal and B- to negative, taking care not to reverse them. On first connection with a new cell there may be no output at OUT+\/OUT- until you apply 5V via USB-C once — this activates the protection circuit.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003ePower via USB-C to charge\u003c\/strong\u003e\n\u003cp\u003eUse a plain (\"dumb\") USB-C cable with a charger or power bank that can output at least 1A. The red LED flashes while charging and turns solid once the battery is full.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eConnect your load\u003c\/strong\u003e\n\u003cp\u003eWire your circuit to OUT+\/OUT-; the red LED stays on solid once a load is connected. While USB-C power is present the load draws from the input; when unplugged it draws from the battery automatically. Output cuts off if battery voltage drops below 2.5V.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003csection class=\"nznpd__block\"\u003e\n\u003ch3 class=\"nznpd__h\"\u003eCommon questions\u003c\/h3\u003e\n\u003cbr\u003e\n\u003cdiv class=\"nznpd__faqs\"\u003e\n\u003cdetails class=\"nznpd__faq\" open\u003e\n\u003csummary\u003eWhy is there no output voltage when I first connect the battery?\u003c\/summary\u003e\n\u003cp\u003eThis is normal. When connecting a new cell, the protection circuit needs to be activated by applying 5V to the USB-C input at least once. After that, the output works normally, drawing from either the input or the battery as needed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"nznpd__faq\"\u003e\n\u003csummary\u003eWhich USB-C cable and power source should I use?\u003c\/summary\u003e\n\u003cp\u003eUse a plain (\"dumb\") USB-C cable with a USB power supply or power bank rated 1A or greater. This module does not negotiate USB-C power delivery and may not work with \"e-marked\" Type-C cables, and it does not read the current capability of the source. Avoid powering it from a computer or phone — use a dedicated charger for reliable charging.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"nznpd__faq\"\u003e\n\u003csummary\u003eWhat battery types can I use?\u003c\/summary\u003e\n\u003cp\u003eThe TP4056 is designed for single-cell Li-ion or LiPo batteries, including standard 18650 cells. It is not suitable for multi-cell packs or other battery chemistries such as NiMH or lead-acid.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"nznpd__faq\"\u003e\n\u003csummary\u003eWhat happens if the battery over-discharges?\u003c\/summary\u003e\n\u003cp\u003eThe module automatically cuts off the output when battery voltage drops below 2.5V, protecting the cell from damage. It also limits load current to around 3A to prevent excessive draw.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails class=\"nznpd__faq\"\u003e\n\u003csummary\u003eCan I run a load while charging?\u003c\/summary\u003e\n\u003cp\u003eYes. When USB-C power is connected, the output draws current from the input rather than the battery, allowing simultaneous charging and operation.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\n\u003cp class=\"nznpd__note\"\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e Connect the battery before first powering the module via USB-C to activate the protection circuit — a new cell may need 5V applied once before the OUT terminals supply power. Use a plain USB-C cable with a charger that outputs at least 1A (not a computer or phone port) for reliable charging. Take care to connect the battery the right way around, and follow standard safe-handling practices for lithium-ion cells.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"NZN Electronics","offers":[{"title":"Default Title","offer_id":42880243826784,"sku":"PWR-TP4056-USBC","price":1.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/TypeCTP4056ProductHero.png?v=1781687938"},{"product_id":"18650-battery-holder-solder-pins-1-2-slot","title":"18650 Battery Holder Case with Solder Pins – 1 \u0026 2 Slot, PCB Mount (ABS)","description":"\u003cstyle\u003e.nznpd{--o:#F57C00;--od:#E65100;--ink:#0F172A;--mut:#5b6573;--line:#E8ECF0;--soft:#F7F8FA;max-width:1120px;margin:0 auto;color:var(--ink);font-family:inherit;line-height:1.6} .nznpd,.nznpd *{box-sizing:border-box} .nznpd p{margin:0;color:var(--mut);font-size:15px;line-height:1.65} .nznpd strong{color:var(--ink)} 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li::before{counter-increment:s;content:counter(s);width:27px;height:27px;border-radius:999px;background:#fff;border:2px solid #FCE0C6;color:var(--od);font-weight:800;font-size:13px;display:flex;align-items:center;justify-content:center} .nznpd__steps strong{display:block;font-size:14px} .nznpd__steps p{font-size:13px;margin-top:2px;line-height:1.45} .nznpd__block{margin-top:36px;padding-top:30px;border-top:1px solid var(--line)} .nznpd__h{margin:0 0 28px;font-size:1.15rem;font-weight:800;letter-spacing:-.02em;color:var(--ink);display:flex;align-items:center;gap:10px} .nznpd__h::before{content:\"\";flex:0 0 auto;width:20px;height:3px;border-radius:2px;background:var(--o)} .nznpd__specs{border:2px solid var(--line);border-radius:12px;overflow:hidden} .nznpd__spec{display:grid;grid-template-columns:minmax(150px,.7fr) 1fr;gap:18px;padding:12px 16px;font-size:14px} .nznpd__spec:nth-child(odd){background:var(--soft)} .nznpd__spec span{color:var(--mut)} .nznpd__spec strong{font-weight:700} 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0;font-weight:700;font-size:14px;color:var(--ink);display:flex;justify-content:space-between;align-items:center;gap:12px} .nznpd__faq summary::-webkit-details-marker{display:none} .nznpd__faq summary::after{content:\"\\203A\";flex:0 0 auto;color:var(--o);font-weight:800;font-size:20px;line-height:1;display:inline-block;transform:rotate(90deg);transition:transform .22s ease} .nznpd__faq[open] summary::after{transform:rotate(-90deg)} .nznpd__faq p{padding:0 0 16px;font-size:14px} .nznpd__faq[open] p{animation:nznpdReveal .24s ease} @keyframes nznpdReveal{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}} .nznpd p.nznpd__note{margin-top:16px;background:var(--soft);border:2px solid var(--line);border-radius:12px;padding:14px 16px;font-size:13.5px;color:var(--mut);line-height:1.55} @media (prefers-reduced-motion:reduce){.nznpd__faq summary::after{transition:none}.nznpd__faq[open] p{animation:none}} @media (max-width:749px){.nznpd__checks{grid-template-columns:1fr}.nznpd__uses{grid-template-columns:1fr}.nznpd__spec{grid-template-columns:1fr;gap:2px}}\u003c\/style\u003e\u003cdiv class=\"nznpd\"\u003e\n\u003cdiv class=\"nznpd__lead\"\u003e\n\u003cp class=\"nznpd__intro\"\u003eKeep your 18650 cells organised and project-ready. These rugged \u003cstrong\u003eABS battery holders\u003c\/strong\u003e use \u003cstrong\u003ebare solder pins\u003c\/strong\u003e that mount straight onto a PCB or perfboard — no wire leads to trim back — so they're ideal for clean, permanent DIY builds. The \u003cstrong\u003e1-slot\u003c\/strong\u003e brings out 2 pins for a single cell (3.7V). The \u003cstrong\u003e2-slot\u003c\/strong\u003e gives you 4 independent pins, so you can wire its two cells in \u003cstrong\u003eparallel\u003c\/strong\u003e (3.7V, double the capacity) or in \u003cstrong\u003eseries\u003c\/strong\u003e (7.4V). Bare pins only — solder your own wires if you need flying leads.\u003c\/p\u003e\n\u003cbr\u003e\u003cul class=\"nznpd__checks\"\u003e\n\u003cli\u003eBare solder pins for direct PCB \/ perfboard mounting\u003c\/li\u003e\n\u003cli\u003e1-slot: 2 pins · 2-slot: 4 independent pins\u003c\/li\u003e\n\u003cli\u003eWire the 2-slot in parallel (3.7V) or series (7.4V)\u003c\/li\u003e\n\u003cli\u003eTough ABS shell resists knocks, dust \u0026amp; moisture\u003c\/li\u003e\n\u003cli\u003eNickel-plated springs grip flat- \u0026amp; button-top cells\u003c\/li\u003e\n\u003cli\u003eSnap-fit cells in and out — no tools needed\u003c\/li\u003e\n\u003cli\u003eFits standard 18650 Li-ion (3.7V) cells\u003c\/li\u003e\n\u003cli\u003eStackable footprint for tidy multi-cell packs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eSpecifications\u003c\/h3\u003e\n\u003cbr\u003e\u003cdiv class=\"nznpd__specs\"\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eMaterial\u003c\/span\u003e\u003cstrong\u003eABS plastic, nickel-plated springs\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eBattery type\u003c\/span\u003e\u003cstrong\u003e18650 Li-ion (3.7V)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eCell fit\u003c\/span\u003e\u003cstrong\u003eFlat top \u0026amp; button top\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eConfigurations\u003c\/span\u003e\u003cstrong\u003e1 Slot (single) \/ 2 Slot (dual)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eSolder pins\u003c\/span\u003e\u003cstrong\u003e1 Slot = 2 pins \/ 2 Slot = 4 independent pins\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003e2-slot wiring\u003c\/span\u003e\u003cstrong\u003eParallel 3.7V (2× capacity) or Series 7.4V\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eConnection\u003c\/span\u003e\u003cstrong\u003eBare solder pins (no leads)\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eMounting\u003c\/span\u003e\u003cstrong\u003ePCB \/ perfboard\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003e1-slot size\u003c\/span\u003e\u003cstrong\u003e~78 × 20 × 19mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003e2-slot size\u003c\/span\u003e\u003cstrong\u003e~78 × 41 × 19mm\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nznpd__spec\"\u003e\n\u003cspan\u003eColour\u003c\/span\u003e\u003cstrong\u003eBlack\u003c\/strong\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eWhat's in the box\u003c\/h3\u003e\n\u003cbr\u003e\u003cdiv class=\"nznpd__included\"\u003e\n\u003cdiv class=\"nznpd__qty\"\u003e1×\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cstrong\u003e18650 battery holder (your chosen slot count)\u003c\/strong\u003e\u003cp\u003eBare-pin holder only — no wire leads or batteries included.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eGreat for\u003c\/h3\u003e\n\u003cbr\u003e\u003cdiv class=\"nznpd__uses\"\u003e\n\u003cdiv class=\"nznpd__use\"\u003eDIY power banks \u0026amp; USB chargers\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eLED \u0026amp; lighting projects\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eRC, robotics \u0026amp; automation packs\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eSolar \u0026amp; battery storage builds\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eArduino \/ ESP32 power supplies\u003c\/div\u003e\n\u003cdiv class=\"nznpd__use\"\u003eBattery testing \u0026amp; spare-cell storage\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003cdiv class=\"nznpd__qs\"\u003e\n\u003ch3\u003eGetting started\u003c\/h3\u003e\n\u003col class=\"nznpd__steps\"\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eInsert your cell\u003c\/strong\u003e\u003cp\u003eSnap an 18650 into the holder — the sprung contact takes flat-top or button-top cells.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eMount and solder\u003c\/strong\u003e\u003cp\u003ePush the bare pins through your PCB or perfboard and solder underneath, or solder wires straight to the pins.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003eChoose your wiring (2-slot)\u003c\/strong\u003e\u003cp\u003eJoin the two + pins and two − pins for parallel (3.7V, 2× capacity), or link one cell's − to the other's + for series (7.4V).\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cdiv\u003e\n\u003cstrong\u003ePower your build\u003c\/strong\u003e\u003cp\u003eConnect to your circuit, charger or BMS and you're ready to go.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"nznpd__block\"\u003e\u003ch3 class=\"nznpd__h\"\u003eCommon questions\u003c\/h3\u003e\n\u003cbr\u003e\u003cdiv class=\"nznpd__faqs\"\u003e\n\u003cdetails class=\"nznpd__faq\" open\u003e\u003csummary\u003eDo these come with wire leads?\u003c\/summary\u003e\u003cp\u003eNo. These are the bare solder-pin type, designed to mount straight onto a PCB or perfboard. If you need flying leads, just solder your own wires to the pins.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"nznpd__faq\"\u003e\u003csummary\u003eHow do I wire the 2-slot — series or parallel?\u003c\/summary\u003e\u003cp\u003eThe 2-slot brings out 4 independent solder pins. Join the two + pins and the two − pins for parallel (3.7V with double the capacity), or link one cell's − to the other's + for series (7.4V). It's molded \"PARALLEL\" to show the default cell orientation, but the independent pins let you do either.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"nznpd__faq\"\u003e\u003csummary\u003eDo they hold protected (button-top) cells?\u003c\/summary\u003e\u003cp\u003eYes. The sprung contacts take both flat-top and slightly longer protected button-top 18650 cells.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"nznpd__faq\"\u003e\u003csummary\u003eWhat's the difference between the 1-slot and 2-slot?\u003c\/summary\u003e\u003cp\u003eThe 1-slot holds a single 18650 and brings out 2 pins. The 2-slot holds two cells with 4 independent pins, so you can wire them in parallel (3.7V) or series (7.4V). Choose your configuration at checkout.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails class=\"nznpd__faq\"\u003e\u003csummary\u003eAre batteries included?\u003c\/summary\u003e\u003cp\u003eNo, the holders are sold on their own so you can use the 18650 cells you already have.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cp class=\"nznpd__note\"\u003e\u003cstrong\u003eGood to know:\u003c\/strong\u003e These are the bare-pin version — no wire leads included. Every order is checked before it ships from our Te Awamutu stock.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"NZN Electronics","offers":[{"title":"1 Slot","offer_id":42882002288736,"sku":"BH-18650-1S","price":2.79,"currency_code":"NZD","in_stock":true},{"title":"2 Slot","offer_id":42882002321504,"sku":"BH-18650-2S","price":3.49,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0664\/6127\/0112\/files\/Overall_Slot_Product_Hero.jpg?v=1781739622"}],"url":"https:\/\/www.nznelectronics.co.nz\/collections\/power-modules.oembed","provider":"NZN Electronics","version":"1.0","type":"link"}