{"product_id":"wella-xpert-hs50-replacement-battery-12v-2000mah-ni-mh","title":"Wella Xpert HS50 Replacement Battery 1.2V 2000mAh KR-800","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWella Xpert HS50 Series — 1.2V Ni-MH Replacement Battery (KR-800 AAE)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 1.2V 2000mAh Ni-MH cell replacing OEM part KR-800 AAE in Wella cordless hair clippers. It fits the Xpert HS50, Tonde Eco S, Profi XS, and ECO XS Profi. Voltage and capacity match the original spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eXpert HS50 \/ Profi XS platform compatibility:\u003c\/strong\u003e\n    These four models share the same 1.2V single-cell architecture, connector pinout, and physical cell format — 52.90 × 14.30 × 14.30mm. The BMS in each model expects the same charge termination behaviour from a Ni-MH cell, so one replacement covers all four.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the Xpert HS50 platform. The BMS accepted charge termination via negative delta-V detection without triggering a false full-charge cutoff — a common failure point with undersized Ni-MH replacements.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eMotor load tip for the HS50:\u003c\/strong\u003e\n    These clippers draw a current spike each time the blade engages thick or dense hair. Keep blade tension set correctly — misadjusted blades force the motor harder, pushing instantaneous draw up and accelerating cell wear faster than normal cycling alone.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HS50 motor slows down before the low-battery indicator lights\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells under motor load show voltage sag before the cell is genuinely depleted. The clipper's indicator circuit reads resting voltage, not load voltage — so the light stays off while the blade is already losing torque. This gap widens as the cell ages and internal resistance climbs. A fresh 2000mAh cell has lower internal resistance, which tightens that gap and restores consistent blade speed throughout the usable charge window.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eClipper not charging in the dock after cleaning product contact\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSpray-on blade cleaners and lubricants wick into the charging dock contacts over time and leave a resistive film. The charger sees this as an open circuit and delivers no current — the battery reads as fine, but it never actually charges. Wipe the dock contacts and the clipper's charge pins with isopropyl alcohol on a cotton swab, let them dry fully, then reseat the clipper. If the charge indicator then activates within 30 seconds, the contacts were the fault — not the battery.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416128913498,"sku":"BWCS-MCS188SL-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416128946266,"sku":"BWCS-MCS188SL-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416128979034,"sku":"BWCS-MCS188SL-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MCS188SL-1.webp?v=1779760424","url":"https:\/\/batteryweb.com\/products\/wella-xpert-hs50-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}