{"product_id":"olympic-smart-scale-20-replacement-battery-72v-2000mah-ni-mh","title":"Olympic Smart Scale 20 Replacement Battery 7.2V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOlympic Smart Scale 20 Series — 7.2V Ni-MH Replacement Battery (56320)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.2V, 2000mAh Ni-MH replacement battery for the Olympic Smart Scale 20, Smart Scale 23, and Smart Scale 25 medical-grade digital scales. It restores power to the electronic display and onboard measurement circuitry. OEM part numbers 56320, 56328, and 400850-01 all apply to this cell format.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSmart Scale 20, 23, and 25 compatibility:\u003c\/strong\u003e\n    All three models share the same 7.2V voltage rail, connector pinout, and BMS handshake protocol, which is why a single cell covers the range. Swapping between models requires no wiring or hardware change.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and load cycles on a Smart Scale 20 unit. The BMS completed its initialization handshake without fault flags, and the cell held voltage through the full measurement cycle without sag triggering a low-battery cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePower-on self-test protocol:\u003c\/strong\u003e\n    After installing this battery, let the scale complete its full boot and self-test sequence without pressing any buttons or interrupting the cycle. Medical-grade BMS firmware runs a verification routine at startup — cutting power during this window registers a false battery fault that will persist until the next clean reboot.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Smart Scale alarms low battery immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Smart Scale's BMS is calibrated to the charge profile of the OEM cell it shipped with. A new replacement cell has a slightly different internal resistance signature, which the BMS reads as a voltage anomaly during the first self-test pass. This triggers a low-battery alarm even when the cell is fully charged. Running one complete charge-discharge cycle allows the BMS to recalibrate its threshold against the new cell's chemistry. After that first cycle, the alarm clears and the scale reads charge state accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eScale will not power on after the old battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge at roughly 1–2% per day when idle. A battery left in a stored scale for several months can drop below the BMS recovery threshold — typically around 5.4V for a 7.2V pack — at which point the BMS locks out startup to protect the cells from deep-discharge damage. Installing a fresh charged replacement resolves this immediately. Before installing, confirm the replacement cell reads at or above 7.2V open-circuit with a multimeter, then allow the scale to complete its full boot cycle undisturbed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381413675098,"sku":"BWCS-NTA563MD-1","price":53.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381413707866,"sku":"BWCS-NTA563MD-2","price":63.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381413740634,"sku":"BWCS-NTA563MD-3","price":70.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NTA563MD-1.webp?v=1778900625","url":"https:\/\/batteryweb.com\/products\/olympic-smart-scale-20-replacement-battery-72v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}