{"product_id":"custom-battery-pack-replacement-battery-37v-3350mah-li-ion","title":"1ICP\/18\/650 1S1P Li-Ion Compatible Battery 3.7V 3350mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCustom Battery Pack 1ICP\/18\/650 1S1P — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a single-cell 3.7V Li-ion battery pack rated at 3350mAh (12.4Wh). It uses an 18650-format cell in a 1S1P configuration. It fits portable electronic devices that accept a direct 1ICP\/18\/650 1S1P replacement.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e1S1P cell configuration:\u003c\/strong\u003e\n    One cell in series, one in parallel means the pack runs at the native 18650 voltage rail — no step-up, no balancing circuit. Any device built around a single 18650 cell shares this voltage and connector footprint.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge on the bench. The BMS held the cutoff at the correct low-voltage threshold and the protection circuit tripped cleanly under overload. Charge acceptance was normal across both cycles we logged.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge calibration after swap:\u003c\/strong\u003e\n    If your device has an integrated capacity indicator, run one full charge-discharge cycle after installing this pack. The fuel gauge in the host device calibrates against the new cells during that first cycle — without it, the indicator may read inaccurately for the first several uses.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePack running at lower voltage than rated on first use\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion packs ship at storage voltage — typically 3.6V to 3.85V rather than a full 4.2V. This is intentional. Shipping at full charge accelerates cell degradation in transit. If your device reads low battery immediately after installation, charge the pack fully before drawing any load. The rated 3.7V nominal reflects the average discharge voltage across the full cycle, not the resting voltage out of the box.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePack not reaching full charge on the first cycle\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome charge ICs reduce current when they detect a new or deeply rested cell — this is a protective pre-charge phase, not a fault. The pack may terminate early or show a lower state of charge than expected on cycle one. Disconnect, wait five minutes, then start a second charge. By the second or third full cycle the charge IC steps up to the standard CC-CV profile and the pack reaches its full 4.2V terminal voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333498273882,"sku":"BWCS-CM008SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333498306650,"sku":"BWCS-CM008SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333498339418,"sku":"BWCS-CM008SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CM008SL-1.webp?v=1778212804","url":"https:\/\/batteryweb.com\/products\/custom-battery-pack-replacement-battery-37v-3350mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}