{"product_id":"wahl-8550-replacement-battery-12v-2000mah-ni-mh","title":"Wahl 8550 Replacement Battery 1.2V 2000mAh 93154","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWahl 8550 \/ 8551 \/ 8554 \/ 8745 Series — 1.2V Ni-MH Replacement Battery (93154)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 1.2V, 2000mAh Ni-MH cell built to replace the original battery in Wahl cordless shavers across the 8550, 8551, 8554, and 8745 model lines. The OEM part number is 93154 (also listed as 93154-101). It fits the motor drive circuit directly, restoring cutting power when the original cell can no longer hold a usable charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003e8550 series platform compatibility:\u003c\/strong\u003e\n    These models share the same 1.2V single-cell motor circuit, physical cell dimensions (50.00 × 14.80 × 14.50mm), and connector orientation. The BMS in each unit expects the same charge termination signal, so one cell format covers all listed variants.\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 8550 motor load. The BMS accepted the cell without error, and charge termination triggered correctly at capacity — no thermal event, no false full-charge cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCharging port care after rinsing:\u003c\/strong\u003e\n    If you rinse the shaver head, shake out visible water and leave the unit upright for at least 30 minutes before docking it. Moisture sitting on the charging contacts can trigger a BMS protection fault that the shaver reports as a dead battery rather than a charging error.\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 8550\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells in shavers degrade faster when charged daily without being run down first. The battery's charge-acceptance window narrows over time, so the shaver reaches its cutoff threshold sooner each cycle. This shows up as the indicator appearing healthy while the motor already struggles under load. A full discharge followed by a full charge resets the gauge, but once the cell itself has faded below roughly 1.0V under load, replacement is the only fix.\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\"\u003eThe shaver's motor draws a short high-current pulse on each cutting stroke. An aged Ni-MH cell cannot sustain voltage under that load, so the motor slows before the indicator registers low. The BMS reads resting voltage, not load voltage — so the indicator stays lit while the motor is already starved. Check this by listening for the motor tone dropping mid-shave with the indicator still showing charge. Replacing the cell restores the voltage floor under load to the 1.2V nominal the motor circuit expects.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416135237722,"sku":"BWCS-PHQ667SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416135270490,"sku":"BWCS-PHQ667SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416135303258,"sku":"BWCS-PHQ667SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHQ667SL-1.webp?v=1779760424","url":"https:\/\/batteryweb.com\/products\/wahl-8550-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}