{"product_id":"kazam-life-b2-replacement-battery-37v-900mah-li-ion","title":"KAZAM Life B2 Replacement Battery KAC5 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKAZAM Life B2 \/ Life C5 — 3.7V Li-ion Replacement Battery (KAC5)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 900mAh lithium-ion cell for the KAZAM Life B2 and Life C5 smartphones. It replaces OEM part numbers KAC5, KALB2, KAC5-HELBE0003594, and KALB2-MXDB01351. Fit this battery when the original cell no longer holds charge through a normal day of calls and messaging.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLife B2 and Life C5 shared battery platform:\u003c\/strong\u003e\n    Both handsets run the same 3.7V single-cell architecture with identical connector pinout and BMS handshake protocol, so one cell covers both models without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Life B2 mainboard. The BMS accepted the cell without fault codes, and charge termination triggered correctly at 4.2V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff problem, not a capacity problem. The KAZAM Life B2's modem and display draw a combined current spike that the new cell's internal resistance cannot sustain at lower state-of-charge. Voltage drops below the BMS cutoff threshold — typically around 3.0V per cell — before the fuel gauge reads zero. Run one full discharge to true flat and recharge completely; this recalibrates the coulomb counter against the actual discharge curve and moves the shutdown point back below 5%.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone reports wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a learned discharge curve from the original cell. A new cell with a fresh discharge profile does not match that stored curve, so the reported percentage drifts — often reading 15–20% higher than actual charge state. The fix is a single full calibration cycle: drain the phone until it shuts off on its own, then charge uninterrupted to 100% without using the device. After that cycle, the fuel gauge IC rewrites its reference curve to match the new cell and percentage reporting stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404208439386,"sku":"BWCS-KMC500SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404208472154,"sku":"BWCS-KMC500SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404208504922,"sku":"BWCS-KMC500SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KMC500SL-1.webp?v=1779369391","url":"https:\/\/batteryweb.com\/products\/kazam-life-b2-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}