{"product_id":"digiland-quad-core-8-replacement-battery-37v-4000mah-li-polymer","title":"DigiLand Quad Core 8\" Replacement Battery 3.7V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDigiLand Quad Core 8\" \/ DL8006 — 3.7V Li-Polymer Replacement Battery (PR-3797103)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 4000mAh lithium-polymer replacement battery for the DigiLand Quad Core 8\" tablet and DL8006. It slots into the same footprint as the original PR-3797103 cell and restores power to the display, processor, and wireless radios. Capacity figures are drawn directly from the product specification — 4000mAh \/ 14.8Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eQuad Core 8\" and DL8006 compatibility:\u003c\/strong\u003e\n    Both models share the same charge IC, connector pinout, and BMS handshake protocol — the PR-3797103 part number covers either board revision 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 DL8006 board. The BMS accepted the cell, thermal cutoff triggered correctly at ceiling voltage, and the protection circuit opened cleanly at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap fuel gauge reset:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff under normal use — screen on, Wi-Fi active — then charge uninterrupted to 100%. This gives the fuel gauge IC a full reference curve against the new cell and eliminates the inaccurate percentage readings that appear immediately 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\"\u003eTablet shutting down at 15–25% remaining after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DigiLand's fuel gauge IC stores its discharge curve in memory calibrated to the old cell. When a new cell is fitted, the IC miscalculates the voltage-to-percentage relationship at the low end of the curve. The display and Wi-Fi radio together pull enough current to cause a voltage dip that the IC misreads as a dead cell — triggering shutdown well above true empty. Run one complete discharge to automatic shutoff followed by an uninterrupted charge to 100%. After that cycle the IC recalibrates and shutdown moves back to the correct low-voltage threshold near 3.4V per cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping or dropping faster than expected from 100%\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eFuel gauge drift shows up as a percentage that drops sharply in the first 20% of use then slows, or reads 80% when the device actually has far less charge. The root cause is the same stored calibration curve — it no longer matches the real discharge profile of the new 4000mAh cell. A single full reference cycle — discharge to auto-shutoff, charge straight to 100% without interruption — writes a new baseline to the IC. If the reading still drifts after two full cycles, check that the charge voltage at the connector is reaching the expected 4.2V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43425839743066,"sku":"BWCS-SAT710SL-1","price":34.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43425839775834,"sku":"BWCS-SAT710SL-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43425839808602,"sku":"BWCS-SAT710SL-3","price":43.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-SAT710SL-1.webp?v=1779929976","url":"https:\/\/batteryweb.com\/products\/digiland-quad-core-8-replacement-battery-37v-4000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}