{"product_id":"lg-vn220-replacement-battery-38v-1200mah-li-ion","title":"LG VN220 Replacement Battery BL-49H1H 3.8V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG VN220 \/ Exalt LTE 4G — 3.8V Li-ion Replacement Battery (BL-49H1H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 1200mAh Li-ion replacement battery for the LG VN220, UN220, Exalt LTE 4G, and Classic Flip. It replaces OEM part numbers BL-49H1H and EAC63438202. If your original cell no longer holds a charge or shuts down unexpectedly, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVN220 \/ UN220 \/ Exalt LTE 4G platform fit:\u003c\/strong\u003e\n    These models share the same battery bay dimensions (58.45 × 37.80 × 5.40mm), 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 full charge and discharge on a VN220 unit. The BMS accepted the cell on first insertion, charge IC stepped through trickle, CC, and CV phases without fault, and the fuel gauge IC read stable voltage throughout.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After installation, disable fast charging and run one complete discharge-to-charge cycle at standard rate. The fuel gauge IC on the VN220 is calibrated to the old cell's discharge curve — this single cycle lets it recalibrate against the new cell before high-current charging begins.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the VN220 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe VN220 uses a coulomb counter in its fuel gauge IC that tracks charge based on the original cell's internal resistance and discharge curve. A new cell has different impedance characteristics, so the stored model no longer matches real-world voltage readings. The gauge will show inaccurate percentages — sometimes jumping 10–15 points — until it builds a new internal model. One full discharge down to auto-shutdown, followed by a complete charge to 100%, resets the coulomb counter and aligns the gauge to 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's cutoff threshold doesn't match the new cell's actual voltage cliff. Under modem load or screen-on draw, cell voltage drops faster than the gauge predicts, triggering a hard shutdown before the displayed percentage hits zero. It is not a faulty battery — it is an uncalibrated gauge reacting to a real voltage sag. Run two full discharge-charge cycles at standard rate; after the second cycle, the gauge recalibrates its endpoint and shutdowns typically stop occurring above 10%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391876989018,"sku":"BWCS-LVN220SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391877021786,"sku":"BWCS-LVN220SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391877054554,"sku":"BWCS-LVN220SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVN220SL-1.webp?v=1779142479","url":"https:\/\/batteryweb.com\/products\/lg-vn220-replacement-battery-38v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}