{"product_id":"emachines-e-slate-400k-replacement-battery-12v-3800mah-ni-mh","title":"eMachines E-Slate 400K Replacement Battery 12V DR36","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eeMachines E-Slate 400K \/ 450K — 12V Ni-MH Replacement Battery (DR36)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 3800mAh (45.6Wh) Ni-MH replacement battery for the eMachines E-Slate 400K and E-Slate 450K tablets. It slots in when the original cell no longer holds a usable charge or fails to power the device away from a wall outlet. OEM part numbers DR36 and DR36S both cross-reference to this cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE-Slate 400K and 450K compatibility:\u003c\/strong\u003e\n    Both models run the same 12V battery bay, same connector pinout, and the same BMS handshake sequence. One cell covers both. No adapter or modification needed.\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 E-Slate platform. The BMS accepted the cell without fault codes, and the charge controller reached termination voltage cleanly on the first cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle conditioning for Ni-MH:\u003c\/strong\u003e\n    Run a full discharge to the device's auto-hibernate cutoff, then charge uninterrupted to 100% before normal use. Ni-MH cells do not activate full capacity until the first complete cycle — skipping this leaves measurable capacity on the table from day one.\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 fitting a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS stores charge history and health data from the previous cell in its battery learn table. When a new cell goes in, that old data makes the new battery look degraded before it has run a single cycle. This is an EEPROM data mismatch — not a fault with the replacement cell. Run one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100%. That cycle forces the BIOS to rewrite the learn table against the new cell's actual behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFuel gauge jumping erratically for the first several charge cycles\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC estimates state-of-charge by comparing measured voltage and current draw against a reference profile built on the old cell. A new Ni-MH cell has a different internal resistance curve, so early readings are unreliable. The gauge recalibrates gradually across three to five full charge and discharge cycles. After that, the percentage readout stabilises — keep cycling fully until it does. Do not judge cell capacity from the first two cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410856149082,"sku":"BWCS-DR36HB-1","price":89.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410856181850,"sku":"BWCS-DR36HB-2","price":105.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410856214618,"sku":"BWCS-DR36HB-3","price":118.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DR36HB-big.webp?v=1779581376","url":"https:\/\/batteryweb.com\/products\/emachines-e-slate-400k-replacement-battery-12v-3800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}