{"product_id":"k-touch-touch-3-replacement-battery-38v-2200mah-li-ion","title":"K-Touch Touch 3 Replacement Battery TBT5957 3.8V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eK-Touch Touch 3 \/ Touch 3C \/ Touch 5 — 3.8V Li-ion Replacement Battery (TBT5957)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V Li-ion cell rated at 2200mAh (8.36Wh), built to the TBT5957 specification. It fits the K-Touch Touch 3, Touch 3C, and Touch 5 smartphones. If your original battery no longer holds a charge or the phone shuts down unexpectedly, this cell replaces it directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouch 3, Touch 3C, and Touch 5 compatibility:\u003c\/strong\u003e\n    All three models share the same battery bay dimensions (72.00 × 57.06 × 4.36mm), connector pinout, and 3.8V nominal voltage rail — which is why a single cell covers the full lineup 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 a controlled rig and confirmed the BMS communicates correctly with the charge IC — no false full-charge flags, no premature cutoff at the low end.\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 and run one complete discharge-to-charge cycle. The fuel gauge IC is calibrated against the old cell's discharge curve; giving it one full cycle with the new cell prevents erratic percentage readings from the start.\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 K-Touch Touch 3\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff failure, not a capacity problem. As lithium-ion cells age, their internal resistance rises. Under load — a 4G modem handshake or a screen-on burst — terminal voltage drops sharply below the BMS cutoff threshold even when the fuel gauge still reads 20–30%. The phone cuts power to protect the cell before the percentage counter reaches zero. A fresh TBT5957 cell with lower internal resistance sustains voltage under the same load, so the cutoff only triggers at a true low state of charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone reporting wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Android fuel gauge IC uses a coulomb counter model trained on the previous cell's capacity and discharge curve. After installing a new cell, that model is still mapped to the old battery — so percentage readings can jump, stall, or hit 0% early. The fix is straightforward: charge the phone to 100%, let it discharge fully until it shuts off on its own, then charge back to 100% without interruption. After that single full cycle, the coulomb counter resets its baseline to the new cell and percentage accuracy normalises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392064782426,"sku":"BWCS-KTT310SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392064815194,"sku":"BWCS-KTT310SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392064847962,"sku":"BWCS-KTT310SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KTT310SL-1.webp?v=1779143561","url":"https:\/\/batteryweb.com\/products\/k-touch-touch-3-replacement-battery-38v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}