{"product_id":"rowenta-tn5100-replacement-battery-24v-2000mah-ni-mh","title":"Rowenta TN5100 Replacement Battery 2.4V 2000mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRowenta TN5100 Series — 2.4V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V 2000mAh Ni-MH replacement battery for the Rowenta TN5100 electric shaver range. It fits the TN5100, TN5100F0, TN5120, TN5120F0, and additional models in the same series. Swap it in when the original no longer holds enough charge to complete a shave.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTN5100 series fitment:\u003c\/strong\u003e\n    These models share the same 2.4V motor rail, cell dimensions, and connector orientation. The BMS in each expects a Ni-MH cell — swapping chemistry type triggers a charging fault, so the match here matters.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the cell through a full charge-discharge cycle on the TN5100 platform. The BMS accepted the cell without a protection trip, and motor speed held steady through the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eCharging port drying before connection:\u003c\/strong\u003e\n    If you rinse the shaver head after use, dry the charging port completely before docking. Water bridging the charging contacts causes a BMS protection trip that the shaver reports as a dead battery — not a charging error. A dry port clears it.\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 TN5100\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells in shavers degrade faster when charged daily from a shallow discharge. The battery never fully cycles, so the charge indicator drifts — the shaver shows full but cuts out early. This is a cell-level issue, not a dock fault. Replacing the cell resets the cycle history and restores accurate indicator behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor speed dropping before the indicator reaches empty\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe TN5100 motor draws a short current spike each time the cutting block engages. As a Ni-MH cell ages, internal resistance rises and voltage sags under that load — motor speed drops noticeably before the low-battery indicator triggers. The indicator reads state of charge at rest, not under load, so the gap between \"looks fine\" and \"slows down\" widens as the cell ages. A fresh cell at 2.4V nominal closes that gap immediately.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416131043418,"sku":"BWCS-PHN282SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416131076186,"sku":"BWCS-PHN282SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416131108954,"sku":"BWCS-PHN282SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHN282SL-1.webp?v=1779760427","url":"https:\/\/batteryweb.com\/products\/rowenta-tn5100-replacement-battery-24v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}