{"product_id":"philips-hs920-replacement-battery-24v-2000mah-ni-mh","title":"Philips HS920 Replacement Battery 2.4V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePhilips HS920 \/ HS930 Series — 2.4V Ni-MH Replacement Battery (138 10609)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 2.4V, 2000mAh Ni-MH replacement battery for Philips electric shavers using OEM part number 138 10609. It fits the HS920, HS930, HS969, HS970, and over 160 additional Philips shaver models that share the same battery housing and voltage rail. Swap it in when the original cell can no longer hold enough charge for a full shave.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHS920 \/ HS930 series compatibility:\u003c\/strong\u003e\n    These models share a 2.4V dual-cell Ni-MH configuration with the same connector footprint and BMS handshake — the shaver's charge circuit expects 2.4V nominal, and any deviation causes incorrect charge termination or premature low-battery indication.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the HS920 charge circuit and confirmed the BMS accepted full charge termination correctly, with no false cutoffs under sustained motor load at the shaver's peak draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-rinse charging protocol:\u003c\/strong\u003e\n    If you rinse the shaver head under the tap, shake out retained water and wait at least 30 minutes before placing it on the charge dock — moisture bridging the dock contacts can trigger a BMS protection fault that the shaver misreports 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 HS920\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells degrade faster when cycled at the top 20–30% of their charge range rather than being run down and fully recharged. Most HS920 users charge the shaver each morning after a single use — this keeps the cell in a shallow partial cycle and compresses usable capacity over months. The shaver's charge indicator calibrates against cell voltage, so as capacity shrinks, the indicator appears accurate right up until the shaver cuts out mid-use. Running the battery down to the low indicator before charging resets the cycle depth and slows this fade.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eShaver motor speed dropping before the low-battery indicator activates\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage sag symptom, not a depleted charge symptom. Under the spike in current draw when the cutting heads meet resistance — thick stubble, sideburn angles — the cell voltage dips below what the motor needs to maintain speed, even though the BMS hasn't yet reached its cutoff threshold. An aged or partially degraded Ni-MH cell has higher internal resistance, which makes the voltage sag deeper and faster. Fitting a replacement cell with lower internal resistance restores stable voltage delivery under load; if the symptom returns within a few months, check that the shaver dock contacts are clean and making firm contact at both terminals.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416136024154,"sku":"BWCS-PHS920SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416136056922,"sku":"BWCS-PHS920SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416136089690,"sku":"BWCS-PHS920SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PHS920SL-1.webp?v=1779760424","url":"https:\/\/batteryweb.com\/products\/philips-hs920-replacement-battery-24v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}