{"product_id":"lg-optimus-lte-replacement-battery-37v-1600mah-li-ion","title":"BL-49KH LG Optimus LTE Replacement Battery 3.7V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Optimus LTE \/ Nitro HD — 3.7V Li-ion Replacement Battery (BL-49KH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1600mAh Li-ion replacement cell for the LG Optimus LTE, LU6200, SU640, and Nitro HD smartphones. It replaces OEM part number BL-49KH directly. Fit this battery when the original cell no longer holds a useful charge or the phone shuts down unexpectedly under normal use.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOptimus LTE and Nitro HD platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers the full range 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 Optimus LTE platform and confirmed the BMS accepted the new cell without throwing a battery error flag or capping charge current.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first installation, disable fast charging if available and run one full discharge-to-charge cycle. This allows the fuel gauge IC to map the new cell's discharge curve before reporting accurate percentages to the OS.\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 BL-49KH replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity fault. When the modem transmits or the screen peaks, current draw spikes sharply. An aged or freshly installed cell with an uncalibrated fuel gauge may report 25% remaining while actual cell voltage has already dropped below the BMS cutoff threshold — roughly 3.2V under load. The BMS trips the cutoff to protect the cell, and the phone powers off instantly. One full discharge-charge cycle recalibrates the coulomb counter and resolves most cases of this behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement cell sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge at roughly 2–3% per month in storage. If the cell voltage dropped below 2.5V per cell before installation, the BMS enters lockout mode and blocks charging to prevent thermal runaway on a deeply discharged cell. The phone will show no response — no charging indicator, no boot. Connect the phone to a wall adapter rather than a USB port; wall adapters deliver stable 5V at higher current, which gives the BMS enough headroom to exit lockout and begin a slow pre-charge recovery cycle. Leave it connected for at least 30 minutes before attempting to power on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405011386458,"sku":"BWCS-LKP930XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405011419226,"sku":"BWCS-LKP930XL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405011451994,"sku":"BWCS-LKP930XL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKP930XL-1.webp?v=1779369806","url":"https:\/\/batteryweb.com\/products\/lg-optimus-lte-replacement-battery-37v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}