{"product_id":"lg-k220-replacement-battery-385v-4100mah-li-polymer","title":"BL-T24 LG K220 Replacement Battery 3.85V 4100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLG K220 Series — 3.85V Li-Polymer Replacement Battery (BL-T24)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 4100mAh Li-Polymer battery replacing OEM part BL-T24. It fits the LG K220, K220Y, K220Z, K220dsZ, and related variants. Physical dimensions are 102.60 × 45.90 × 5.20mm — confirm clearance before fitting if your unit has had a prior repair.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK220 series compatibility:\u003c\/strong\u003e\n    The K220 family shares the same battery bay geometry, BL-T24 connector pinout, and charge IC handshake across regional variants — K220Y, K220Z, and K220dsZ all draw from the same voltage rail at the same charge termination point.\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 load discharge on K220 hardware. The BMS terminated charge correctly at 4.35V and tripped undervoltage cutoff cleanly without latching — no force-reset required to recover the cell after deep discharge testing.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-to-charge cycle. The fuel gauge IC calibrates its coulomb counter against the new cell's discharge curve — skipping this step causes the percentage readout to drift noticeably in the first week of use.\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 K220 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff issue, not a capacity problem. When the modem transmits or the screen brightness spikes, current draw causes a new cell's terminal voltage to sag faster than the fuel gauge IC expects — the phone hits its low-voltage cutoff while the gauge still reads 20–30%. One full discharge cycle lets the IC map the actual discharge curve of the replacement cell. After that cycle, shutdown behaviour aligns with the displayed percentage.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery during the first few charges\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell has slightly higher internal impedance than a broken-in cell. The charge IC pushes the same constant-current rate into higher resistance, generating more heat in the first two to three cycles. This is normal and self-corrects as the cell's impedance drops with use. If warmth persists past the fifth charge cycle or the phone becomes hot rather than warm, check that the adhesive pull-tab was not crimped against the cell during reassembly — that can create a pressure point that affects thermal dissipation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392077201498,"sku":"BWCS-LKS755XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392077234266,"sku":"BWCS-LKS755XL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392077267034,"sku":"BWCS-LKS755XL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LKS755XL-1.webp?v=1779143621","url":"https:\/\/batteryweb.com\/products\/lg-k220-replacement-battery-385v-4100mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}