{"product_id":"packard-bell-easynote-a5-replacement-battery-108v-4400mah-li-ion","title":"Packard Bell EasyNote A5 SQU-409 Replacement Battery 10.8V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePackard Bell EasyNote A5 \/ A7 Series — 10.8V Li-ion Replacement Battery (SQU-409)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 4400mAh (47.52Wh) Li-ion battery for the Packard Bell EasyNote A5, A5340, A7, and A7145 notebook computers. It replaces OEM part numbers SQU-409, SQU-416, DHS5, and several related part numbers listed on the original pack. Fit is confirmed against the physical connector, cell arrangement, and BMS handshake protocol used across this EasyNote series.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEasyNote A5 and A7 platform compatibility:\u003c\/strong\u003e\n    These models share the same 10.8V three-cell-series architecture and use the same SMBus communication lines between the battery BMS and the motherboard. A pack that negotiates correctly on the A5 will negotiate identically on the A7 and A7145 without firmware differences.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on an EasyNote A5340, confirmed full SMBus handshake, verified the BMS held voltage above the 9.0V low-cutoff threshold under display-plus-CPU load, and checked that the charger circuit terminated at 12.6V as expected.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install discharge cycle on EasyNote units:\u003c\/strong\u003e\n    After fitting this pack, run the laptop on battery until it reaches hibernate-cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to register the new cell's actual capacity and clears the inaccurate health warning that 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\"\u003eWhy the EasyNote A5 shuts down at 20–30% battery remaining\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe EasyNote A5 relies on the fuel gauge IC inside the battery pack to estimate remaining capacity. When cells age, they develop a steep voltage cliff — voltage drops sharply below 10.4V, which the motherboard reads as a critical low-battery event and triggers an immediate shutdown, even though the OS gauge still shows 20–30%. A replacement pack with fresh cells has a flatter discharge curve, so voltage stays above the shutdown threshold much further into the cycle. After two or three full calibration cycles, the fuel gauge IC recalibrates and the displayed percentage will track the actual remaining capacity accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting new battery health as \"poor\" or \"unknown\" immediately after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe BIOS reads health data stored in the battery pack's EEPROM, which holds cycle count, rated Wh, and a health flag written by the previous charge controller. On a new pack, the EEPROM may show zero cycles but a health flag that conflicts with BIOS expectations, triggering a \"poor\" or \"unknown\" status on first boot. This is a calibration state, not a fault. Run one full discharge to hibernate-cutoff followed by an uninterrupted charge to 100% — after this learn cycle, the BIOS will update its health register and display the correct status.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410824101978,"sku":"BWCS-PB5340NB-1","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410824134746,"sku":"BWCS-PB5340NB-2","price":85.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410824167514,"sku":"BWCS-PB5340NB-3","price":94.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PB5340NB-1.webp?v=1779581287","url":"https:\/\/batteryweb.com\/products\/packard-bell-easynote-a5-replacement-battery-108v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}