{"product_id":"suport-acumulator-3-7v-18650-x-2","title":"Battery Holder 3.7V 18650 X 2","description":"\u003cdiv class=\"cl-desc\"\u003e\n\n\u003cdiv class=\"cl-intro\"\u003e\n\n\u003ch2\u003eDual 18650 Li-ion Battery Holder\u003c\/h2\u003e\n\n\u003cp\u003eThis 18650 battery holder allows you to connect two Li-ion batteries in series to achieve a combined voltage of 7.4V. Ideal for DIY projects, portable lighting systems, electronic devices, or prototypes requiring compact and secure power. Robust ABS plastic construction with spring-loaded contacts for stable connection.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-benefits\"\u003e\n\n\u003ch2\u003eWhat you get with this product\u003c\/h2\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eSecure connection of two 18650 batteries in series to obtain the 7.4V voltage needed for your project\u003c\/li\u003e\n\n\u003cli\u003eSpring-loaded metallic alloy contacts ensure stable connection without interruptions, even with vibrations\u003c\/li\u003e\n\n\u003cli\u003eCompact dimensions of 77 x 66 x 41 mm, perfect for integration into tight spaces or custom enclosures\u003c\/li\u003e\n\n\u003cli\u003ePre-mounted red and black wires for quick polarity identification and immediate connection\u003c\/li\u003e\n\n\u003cli\u003eShock-resistant plastic construction, protecting the batteries during operation\u003c\/li\u003e\n\n\u003cli\u003eUniversal compatibility with all standard 18650 Li-ion batteries on the market\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-how\"\u003e\n\n\u003ch2\u003eHow it works and how to install it\u003c\/h2\u003e\n\n\u003cp\u003eInsert the two 18650 batteries into the holder's compartments, observing the polarity indicated on the casing. The internal metal springs automatically make the series connection, resulting in a total voltage of 7.4V at the ends of the wires. Connect the red and black wires to your device, observing the correct polarity. No special tools or advanced knowledge are required — assembly takes less than a minute.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-faq\"\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\n\u003cdiv class=\"cl-faq-item\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eCan I use this holder with batteries of a different capacity than 18650?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eNo, the holder is designed exclusively for the standard 18650 format with dimensions of 18mm diameter and 65mm length. Other formats will not fit correctly.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-faq-item\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat voltage do I get if I connect two 3.7V batteries?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe series connection adds the voltages, resulting in a nominal 7.4V or approximately 8.4V at full charge.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-faq-item\"\u003e\n\n\u003cp\u003e\u003cstrong\u003eDoes the holder include 18650 batteries?\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eNo, the package contains only the holder. 18650 batteries are purchased separately depending on the desired capacity and characteristics.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-specs\"\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\n\u003ctable\u003e\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eCompatible battery type\u003c\/td\u003e\n\n\u003ctd\u003eLi-ion 18650\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNumber of batteries\u003c\/td\u003e\n\n\u003ctd\u003e2 pieces\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConnection mode\u003c\/td\u003e\n\n\u003ctd\u003eSeries (voltages added)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eNominal output voltage\u003c\/td\u003e\n\n\u003ctd\u003e7.4V (2 x 3.7V)\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eLength\u003c\/td\u003e\n\n\u003ctd\u003e77 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eWidth\u003c\/td\u003e\n\n\u003ctd\u003e66 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eHeight\u003c\/td\u003e\n\n\u003ctd\u003e41 mm\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eCasing material\u003c\/td\u003e\n\n\u003ctd\u003eABS Plastic\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003eConnector type\u003c\/td\u003e\n\n\u003ctd\u003eMetal spring with pre-mounted wire\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003ctd\u003ePackage contents\u003c\/td\u003e\n\n\u003ctd\u003e1 x 18650 x 2 battery holder\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"cl-warranty\"\u003e\n\n\u003ch2\u003eWarranty and Support\u003c\/h2\u003e\n\n\u003cp\u003eThe product benefits from a 24-month warranty in accordance with Romanian legislation. You have the right to return within 30 days of receipt. Delivery is fast via national courier throughout Romania.\u003c\/p\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"OEM","offers":[{"title":"Default Title","offer_id":56801660076363,"sku":"Q-7H018","price":1.95,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1032\/2067\/4891\/files\/suport-acumulator-37v-18650-x-2_d94b848b-ec75-44d1-bc30-c6aee93d96f2.jpg?v=1773834629","url":"https:\/\/classlights.eu\/en-eu\/products\/suport-acumulator-3-7v-18650-x-2","provider":"ClassLights","version":"1.0","type":"link"}