{"product_id":"wella-1871-0071-replacement-battery-32v-1800mah-lifepo4","title":"Wella 1871-0071 Compatible Battery 3.2V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWella Crom Style Pro 1871-0071 — 3.2V LiFePO4 Replacement Battery (WM1871-7960)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.2V 1800mAh LiFePO4 replacement battery for the Wella Crom Style Pro Type 1871 cordless clipper and trimmer (model 1871-0071). It matches the original OEM part number WM1871-7960 and slots into the existing battery bay without modification. Capacity is 1800mAh — use that figure when comparing to your original cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCrom Style Pro 1871 platform fit:\u003c\/strong\u003e\n    The 1871 series uses a single-cell LiFePO4 configuration at 3.2V nominal. That chemistry sets the voltage rail the motor controller expects. Swapping to a Li-ion cell at 3.6V or 3.7V nominal would push the motor drive circuit outside its operating range — LiFePO4 is not interchangeable with Li-ion here.\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 Crom Style Pro platform. The BMS responded correctly to end-of-charge and end-of-discharge thresholds, and the protection circuit tripped cleanly on overcurrent without latching — meaning the device recovered normally after load removal.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCharging port care for the 1871:\u003c\/strong\u003e\n    Dry the charging port completely before connecting to the charger after rinsing. Moisture bridging the charging contacts triggers a BMS protection fault that the device reports as a dead battery, not a charging error — the battery itself is fine once the port is dry.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCapacity fade from daily partial charging on the Crom Style Pro\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLiFePO4 cells handle partial cycles better than most lithium chemistries, but the Crom Style Pro's fuel gauge calibrates against full charge-to-discharge cycles. Charging every day from 40–60% without running the cell low means the indicator drifts — the device shows low battery earlier than the actual state of charge. To recalibrate, run the clipper until the motor noticeably slows, then charge fully to 100% before using again. One full cycle resets the gauge on most units.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor speed dropping before the low-battery indicator activates\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell's internal resistance has climbed high enough that motor load causes a voltage sag below what the motor controller needs, even though resting voltage still reads acceptable to the BMS. The indicator reads state of charge from resting voltage — it doesn't see the sag under load. A new cell with lower internal resistance eliminates the sag. After fitting this replacement, let it complete one full charge cycle before use so the BMS establishes accurate charge-state tracking from 3.65V down.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416128127066,"sku":"BWCS-MCP187SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416128159834,"sku":"BWCS-MCP187SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416128192602,"sku":"BWCS-MCP187SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MCP187SL-1.webp?v=1779760313","url":"https:\/\/batteryweb.com\/products\/wella-1871-0071-replacement-battery-32v-1800mah-lifepo4","provider":"BatteryWeb","version":"1.0","type":"link"}