{"product_id":"lg-optimus-l7-replacement-battery-37v-2900mah-li-ion","title":"LG Optimus L7 BL-44JH Replacement Battery 3.7V 2900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG Optimus L7 \/ P700 — 3.7V Li-ion Replacement Battery (BL-44JH)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2900mAh Li-ion cell built to the BL-44JH spec, fitting the LG Optimus L7 and Optimus P700 smartphones. It slots into the original battery bay and connects via the same three-contact terminal used on both models. Voltage and physical footprint match the originals at 64.70 × 43.40 × 10.60mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eL7 and P700 shared platform:\u003c\/strong\u003e\n    Both phones run on the same MSM7227A chipset platform, draw from the same 3.7V rail, and use the identical connector and BMS handshake — one cell covers both 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 an L7 unit. The BMS accepted the cell without error flags, held voltage above 3.5V through mid-draw screen-on loads, and cut off cleanly at the low-voltage threshold.\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 full discharge to auto-off followed by a full charge before re-enabling any fast charge. The Optimus L7's fuel gauge IC was calibrated to the old cell's discharge curve — one complete cycle rewrites those reference points against the new 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 Optimus L7 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Optimus L7 reads remaining charge using a coulomb counter that was trained on the original cell's voltage-to-capacity curve. A new cell has a different curve, so the reported percentage and actual cell voltage fall out of sync. Under modem or display load, the actual cell voltage drops faster than the gauge expects — the phone cuts out at what looks like 25% because the real voltage hit 3.4V before the gauge caught up. One complete discharge-to-shutdown followed by a full uninterrupted charge resets the fuel gauge IC reference. After that cycle, shutdowns at false-high percentages stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice won't power on after sitting in storage with the new battery installed\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage, and if the BL-44JH cell dropped below 2.5V while sitting unused, the BMS will have entered lockout mode to prevent damage — the phone won't respond to the power button. Connect the phone to a wall charger, not a USB port, and leave it for 15–20 minutes without pressing anything. The charge IC trickle-feeds current at around 100mA to bring the cell back above the BMS re-initialisation threshold, which sits near 2.8V. Once that threshold is crossed, normal charging resumes and the phone will boot.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405010370650,"sku":"BWCS-LKP700HL-1","price":30.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43405010403418,"sku":"BWCS-LKP700HL-2","price":34.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43405010436186,"sku":"BWCS-LKP700HL-3","price":37.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKP700HL-1.webp?v=1779369806","url":"https:\/\/batteryweb.com\/products\/lg-optimus-l7-replacement-battery-37v-2900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}