{"product_id":"lg-ku950-replacement-battery-37v-1000mah-li-ion","title":"LG KU950 Replacement Battery 3.7V 1000mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG KU950 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion cell for the LG KU950 flip phone. It slots into the original battery compartment and connects to the same three-contact puck on the chassis. Voltage and capacity match the factory specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eKU950 and KU-950 compatibility:\u003c\/strong\u003e\n    Both model strings refer to the same hardware revision. The battery compartment, contact layout, and BMS handshake voltage are identical across both designations — no adapter or modification needed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on a KU950 chassis. The BMS accepted the cell without triggering a protection cutoff, and the charge IC stepped through trickle, constant-current, and constant-voltage phases cleanly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting the new cell, run one complete discharge down to automatic shutoff, then charge uninterrupted to 100%. This gives the KU950's fuel gauge IC a clean reference curve for the new cell before it starts reporting percentage to the display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the KU950 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe KU950 uses a simple fuel gauge IC that tracks charge state against a discharge curve learned from the previous cell. When a new cell goes in, the IC is still reading against the old, degraded curve — so it overshoots or undershoots the real state of charge. This causes the percentage bar to jump or plateau at odd levels. One full discharge-to-shutoff and uninterrupted recharge resets the reference. After that cycle, the readout tracks accurately against the new cell.\u003c\/p\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 happens when the fuel gauge IC has not yet recalibrated and the cell voltage drops below the BMS cutoff threshold — typically around 3.0V — before the display shows a low-battery warning. The modem draw during an active call accelerates the voltage drop faster than the IC expects. The fix is the same recalibration cycle: one full discharge to automatic shutoff, then a full charge to 100%. If shutdowns continue after two full cycles, check that the battery contacts on the chassis are clean and making firm contact with the cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405255082074,"sku":"BWCS-LU950SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405255114842,"sku":"BWCS-LU950SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405255147610,"sku":"BWCS-LU950SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LU950SL-1.webp?v=1779370351","url":"https:\/\/batteryweb.com\/products\/lg-ku950-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}