{"product_id":"packard-bell-se-dotse-21g16iws-replacement-battery-111v-4400mah-li-ion","title":"Packard Bell SE DOTSE-21G16iws Compatible Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePackard Bell SE DOTSE-21G16iws — 11.1V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) lithium-ion battery for the Packard Bell EasyNote SE DOTSE-21G16iws and related Dot SE\/S series laptops. It replaces the original cell when capacity has dropped to the point where the laptop no longer holds a usable charge away from mains power. Fits the SE DOTSE-21G16iws, Dot SE\/R-111UK, Dot S\/B-003 IT, Dot S\/B-017UK, and one additional variant.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDot SE and Dot S series fit:\u003c\/strong\u003e These models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — 203.70 x 53.52 x 40.00mm form factor with an identical cell voltage rail at 11.1V nominal across the whole range.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e We ran this cell through charge and discharge cycles on the EasyNote platform and confirmed the BMS communicates correctly with the BIOS — charge acceptance, cutoff, and state-of-charge reporting all behaved as expected without triggering fault flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use calibration on EasyNote:\u003c\/strong\u003e After installing, 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 commonly appears after every cell swap on this platform.\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 swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EasyNote BIOS stores health metrics from the previous cell in its battery EEPROM. When a new cell goes in, the BIOS compares live readings against that stored data and flags a mismatch as poor health. This is not a fault with the replacement cell — it is stale EEPROM data from the old battery. Running a full discharge-to-hibernate followed by an uninterrupted charge to 100% forces a learn cycle that overwrites the old values. After one or two of these cycles, the health status clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual chemistry. The displayed percentage is based on the old cell's discharge curve, so the reading diverges from real voltage under load. When the CPU and display draw full power simultaneously, the cell voltage drops below the BMS cutoff threshold before the gauge reaches 0% — causing an abrupt shutdown. Run two to three full discharge-to-cutoff and charge-to-100% cycles to let the fuel gauge IC recalibrate. After calibration, the shutdown threshold should align with a displayed level below 5%.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409824874586,"sku":"BWCS-AC260NT-1","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409824907354,"sku":"BWCS-AC260NT-2","price":111.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409824940122,"sku":"BWCS-AC260NT-3","price":121.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC260NT-1.webp?v=1779581091","url":"https:\/\/batteryweb.com\/products\/packard-bell-se-dotse-21g16iws-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}