{"product_id":"senao-replacement-battery-108v-4000mah-ni-mh","title":"SENAO DR35 Ni-MH Replacement Battery 10.8V 4000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSENAO DR35 \/ DR35S — 10.8V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 4000mAh (43.2Wh) Ni-MH battery for SENAO notebooks and laptops using the DR35 or DR35S battery part number. It replaces cells that have lost charge retention over repeated cycles. Fit is confirmed against OEM part numbers DR35 and DR35S.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDR35 and DR35S platform:\u003c\/strong\u003e\n    Both part numbers share the same voltage rail, connector pinout, and physical form factor — 214.50 × 52.00 × 18.50mm. Either OEM number on your original cell confirms fitment with this replacement.\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 discharge passes on the bench. The BMS accepted charge normally, held voltage through the discharge curve, and cut off cleanly at the low-voltage threshold without false trips.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration cycle:\u003c\/strong\u003e\n    After fitting, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell swap on SENAO notebooks.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after swapping the DR35\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads EEPROM data written by the original cell. When a new cell goes in, the EEPROM signature does not match the learned charge curve, so the system flags poor health. This is not a fault with the replacement cell. Run one complete discharge-to-hibernate followed by a full uninterrupted charge. After one to three cycles the BIOS recalibrates its learn table and the health warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down suddenly at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC is still referencing the capacity curve of the old, degraded cell. When CPU load and display draw spike together, the new cell's actual voltage briefly dips below what the uncalibrated gauge expects at that percentage, triggering an emergency shutdown. The fix is calibration — not a hardware fault. Discharge fully to hibernate cutoff three times in a row, charging to 100% between each pass. After those cycles the fuel gauge IC maps its readings against the new cell's true voltage curve and the phantom shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410859556954,"sku":"BWCS-DR35HB-1","price":84.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410859589722,"sku":"BWCS-DR35HB-2","price":100.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410859622490,"sku":"BWCS-DR35HB-3","price":111.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DR35HB-big.webp?v=1779581376","url":"https:\/\/batteryweb.com\/products\/senao-replacement-battery-108v-4000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}