{"product_id":"philips-hx6100-series-replacement-battery-37v-800mah-li-ion","title":"Philips HX6100 Series Replacement Battery 3.7V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips HX6100 \/ HX6300 Series — 3.7V Li-ion Replacement Battery (3000 040 83812)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 800mAh Li-ion battery replaces the internal cell in Philips HX6100 and HX6300 series electric toothbrushes. It fits over 90 HX-series models where the original cell has degraded through repeated charge cycles. Capacity is rated at 2.96Wh, matching the stock specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHX6100 and HX6300 platform fit:\u003c\/strong\u003e\n    Both series share the same 3.7V single-cell architecture, connector orientation, and BMS handshake protocol. That's why one replacement cell covers the full range — the voltage rail and physical footprint are identical across 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 HX6150 and HX6300 hardware. The BMS accepted the cell without fault codes, and cutoff voltage held at the expected lower threshold under oscillating motor load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePort-dry before charging:\u003c\/strong\u003e\n    After rinsing the handle, shake out visible water and let the charging port air for at least 10 minutes before docking. Moisture bridging the charging contacts triggers a BMS protection trip the toothbrush reports as a dead battery — not 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 HX6100\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eMost users dock the toothbrush after every use — sometimes twice a day — without running the cell down. Li-ion cells in shallow daily cycles accumulate a voltage offset over time, causing the fuel gauge to drift. The toothbrush indicator reads full, but the usable capacity has quietly shrunk. A full discharge-to-cutoff followed by a complete charge resets the gauge and restores accurate state-of-charge tracking. If the cell is genuinely degraded past recovery, swapping to a fresh 800mAh cell is the only fix.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMotor speed drops before the low-battery indicator activates\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe oscillating motor in HX-series handles draws a brief high-current spike on each stroke. As the cell ages, internal resistance rises — voltage sags under that spike before the BMS cutoff threshold is reached. The user feels the brush slowing down while the indicator still shows charge remaining. This isn't a firmware issue or indicator miscalibration — it's the cell's internal resistance too high to sustain motor-start current. Replacing the cell brings internal resistance back in range and eliminates the sag.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416123277402,"sku":"BWCS-PHX610SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416123310170,"sku":"BWCS-PHX610SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416123342938,"sku":"BWCS-PHX610SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHX610SL-1.webp?v=1779760313","url":"https:\/\/batteryweb.com\/products\/philips-hx6100-series-replacement-battery-37v-800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}