{"product_id":"compaq-pavilion-ze2000-pm342av-replacement-battery-108v-4400mah-li-ion","title":"Compaq Pavilion ZE2000 10.8V Replacement Battery 398832-001","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCompaq Pavilion ZE2000 Series — 10.8V Li-ion Replacement Battery (398832-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 4400mAh (47.52Wh) Li-ion battery for the Compaq Pavilion ZE2000-PM342AV and the broader ZE2000 and dv1000 notebook lineup. It replaces OEM part numbers 398832-001, 383493-001, 396601-001, and several related part numbers used across this platform. The connector, cell voltage, and BMS handshake match the original Compaq specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZE2000 and dv1000 platform fit:\u003c\/strong\u003e\n    These notebooks share the same battery bay dimension, 10.8V three-cell-series architecture, and SMBus communication protocol — which is why one part number spans hundreds of model variants across both product lines.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the cell through charge and discharge cycles on a ZE2000-class unit. The BMS reported correct voltage to the SMBus controller, accepted a full charge without tripping the protection circuit, and held stable under display-plus-CPU load without voltage collapse.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the ZE2000:\u003c\/strong\u003e\n    After fitting the new cell, run one full discharge to hibernate cutoff — do not manually shut down early — then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears in Windows 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 battery health as poor immediately after installation\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Compaq BIOS stores learned capacity data from the previous cell in non-volatile memory. When a new cell is installed, that stored data no longer matches the actual cell — so the firmware flags the battery as degraded or unknown before any calibration has run. This is not a fault with the replacement cell. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%, and the BIOS will rewrite its stored values against the new cell's actual capacity curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down abruptly at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell's actual voltage under combined CPU and display load drops faster than the fuel gauge IC predicts. The gauge was calibrated against the old cell's discharge curve, so at 25% indicated, the real terminal voltage may already be hitting the BMS undervoltage cutoff of around 9.0V. The system cuts power instantly rather than gracefully hibernating. Fix this by completing the full discharge-to-hibernate calibration cycle described above — after two full cycles the fuel gauge IC recalculates the discharge curve against the new cell and the shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43411621445722,"sku":"BWCS-NX4800HB-1","price":70.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43411621478490,"sku":"BWCS-NX4800HB-2","price":82.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43411621511258,"sku":"BWCS-NX4800HB-3","price":91.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NX4800HB-1.webp?v=1779581403","url":"https:\/\/batteryweb.com\/products\/compaq-pavilion-ze2000-pm342av-replacement-battery-108v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}