{"product_id":"blu-touchbook-70-lte-replacement-battery-38v-3300mah-li-polymer","title":"BLU TouchBook 7.0 LTE Compatible Battery BC13 12906 3.8V 3300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBLU TouchBook 7.0 LTE \/ P50 — 3.8V Li-Polymer Replacement Battery (BC13 12906)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 3300mAh Li-Polymer battery for the BLU TouchBook 7.0 LTE and P50 tablets. It replaces OEM part BC13 12906 and fits the physical bay of both models. Capacity is 3300mAh — matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTouchBook 7.0 LTE and P50 compatibility:\u003c\/strong\u003e\n    Both models run the same 3.8V power rail, share the same connector pinout, and use the same BMS handshake. One battery covers both variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the bench. The BMS communicated charge state correctly and protection circuits triggered at expected voltage thresholds — no false cutoffs observed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge reset after installation:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100%. This recalibrates the fuel gauge IC against the new cell and clears the inaccurate percentage readings that commonly appear after a swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBLU TouchBook 7.0 LTE shutting down at 15–25% remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the tablet's combined display and LTE radio load pulls enough current to cause a sharp voltage drop near the bottom of the discharge curve. The fuel gauge IC was calibrated to the old, degraded cell — so it underestimates how quickly voltage collapses under load. A new cell has a steeper low-end voltage cliff than the gauge expects. Run one full discharge to automatic shutoff followed by an uninterrupted charge to 100% — the fuel gauge recalibrates and the premature shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available after battery swap on the TouchBook 7.0 LTE\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome users notice the tablet falls back to standard charging speed after fitting a new battery. The charge IC uses the first completed charge cycle to negotiate the correct USB-PD profile for the new cell. Until that first full cycle completes, the controller defaults to a conservative rate. Charge the tablet from near-empty to 100% in one uninterrupted session — fast charge typically resumes from the next charge cycle onward.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425931919450,"sku":"BWCS-BLP500SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425931952218,"sku":"BWCS-BLP500SL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425931984986,"sku":"BWCS-BLP500SL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BLP500SL-1.webp?v=1779930008","url":"https:\/\/batteryweb.com\/products\/blu-touchbook-70-lte-replacement-battery-38v-3300mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}