{"product_id":"haier-hc-lb5125g-replacement-battery-18v-2200mah-li-ion","title":"Haier HC-LB5125G Cordless Vacuum Replacement Battery 18V 2200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eHaier HC-LB5125G \/ ZL1205C — 18V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 18V 2200mAh (39.6Wh) Li-ion replacement battery for the Haier HC-LB5125G and ZL1205C cordless vacuum cleaners. It slots into the original battery bay and connects to the same BMS handshake the charger expects. Capacity figures are taken directly from product data — 2200mAh at 18V nominal.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHC-LB5125G and ZL1205C compatibility:\u003c\/strong\u003e\n    Both models run the same 18V power rail, use the same connector pinout, and expect the same BMS communication signal from the pack. One replacement covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack under sustained motor load and confirmed the BMS holds the voltage rail steady until the low-cell threshold trips — no premature cutoff under normal suction draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eDock charging on cordless vacuums:\u003c\/strong\u003e\n    Do not leave this vacuum sitting on the charging dock between uses. Continuous trickle charge on Li-ion cells in vacuum packs accelerates capacity fade faster than periodic charge cycles. Charge to full, then remove from the dock.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSuction dropping before the battery indicator reaches low\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the motor draws more current than rated — usually because a blocked filter forces the fan to work harder against restriction. The BMS reads the elevated current draw and begins throttling cell output to stay below overcurrent limits, which the vacuum interprets as low voltage and reduces motor speed. The battery itself is not at fault. Clear the filter and check the dust cup seal before suspecting the cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor cuts out mid-use then recovers after a short pause\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, sealed nozzle, or packed dust cup — the motor stalls partially and current spikes past the pack's trip threshold. The BMS disconnects output to protect the cells, then resets once current drops. The fix is mechanical: clean the filter, clear the nozzle, and empty the dust cup. If the cutout continues on a clear airpath, measure the pack voltage at rest — a healthy cell at 18V nominal should read between 19.8V and 21V fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426415280218,"sku":"BWCS-HAZ512VX-1","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426415312986,"sku":"BWCS-HAZ512VX-2","price":90.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426415345754,"sku":"BWCS-HAZ512VX-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-HAZ512VX-1.webp?v=1779933222","url":"https:\/\/batteryweb.com\/products\/haier-hc-lb5125g-replacement-battery-18v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}