{"product_id":"archos-70-oxygen-replacement-battery-38v-3000mah-li-polymer","title":"Archos 70 Oxygen 3.8V Replacement Battery 298292 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eArchos 70 Oxygen — 3.8V Li-Polymer Replacement Battery (298292)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 3000mAh Li-Polymer battery replaces OEM part 298292 in the Archos 70 Oxygen tablet (AC70OX and AC70OXV2). It fits the 7-inch Android tablet directly, restoring untethered operation when the original cell has degraded. Capacity is 11.4Wh — matching the factory specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAC70OX and AC70OXV2 compatibility:\u003c\/strong\u003e\n    Both board revisions share the same 3.8V rail, connector footprint, and BMS handshake protocol, so a single cell covers the full 70 Oxygen 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 the AC70OX board. The BMS accepted the cell without error flags, charge current ramped correctly through CC\/CV stages, and the protection circuit tripped cleanly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation calibration step:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff, then charge uninterrupted to 100% without using the device. This resets the fuel gauge IC calibration against the new cell and clears the inaccurate percentage readings that typically 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\"\u003eArchos 70 Oxygen shutting down at 15–25% remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still calibrated to the old cell's voltage-curve profile. A new cell holds a steeper voltage slope at low charge levels, so the tablet hits the hardware shutdown threshold before the OS percentage counter reaches zero. It is not a defect in the replacement battery. Run one complete discharge cycle to automatic shutoff, then a full uninterrupted charge — the gauge will re-map its cutoff point to the new cell's actual 3.0V floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging not available after battery swap on the 70 Oxygen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Archos 70 Oxygen charge IC negotiates fast-charge parameters during the first accepted charge cycle on a new cell. Until that cycle completes, the controller defaults to standard 5V charging as a safety measure. Plug into the original charger and allow a full uninterrupted charge from near-zero to 100%. After that single cycle, the charge IC registers the new cell's internal resistance and re-enables the higher current profile.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43303971618906,"sku":"BWCS-ARC702SL-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43303971651674,"sku":"BWCS-ARC702SL-2","price":46.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43303971684442,"sku":"BWCS-ARC702SL-3","price":51.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ARC702SL_1.webp?v=1777520716","url":"https:\/\/batteryweb.com\/products\/archos-70-oxygen-replacement-battery-38v-3000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}