{"product_id":"zonare-one-smartcart-replacement-battery-156v-13000mah-ni-mh","title":"Zonare One Smartcart 15.6V Replacement Battery 85031-00","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZonare One Smartcart \/ Z-Pak — 15.6V Ni-MH Replacement Battery (85031-00)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 15.6V, 13000mAh Ni-MH battery replaces the OEM pack in the Zonare One Smartcart and Z-Pak mobile ultrasound systems. It slots into the same bay as the original and matches the voltage rail the BMS expects for power-on verification. Capacity figure comes from product data — 202.8Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eOne Smartcart and Z-Pak platform fit:\u003c\/strong\u003e\n    Both units share the same 15.6V architecture and battery bay dimensions. The BMS on each platform authenticates voltage and cell chemistry at boot, so matching the Ni-MH chemistry here is not optional — a Li-ion swap will trip a hard fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through a full charge-discharge sequence and monitored BMS handshake at each power-on event. The protection circuit engaged correctly at low-voltage cutoff, and the charge IC accepted the cell without triggering an unrecognised-battery fault.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-installation self-test requirement:\u003c\/strong\u003e\n    After fitting this battery, allow the Zonare to complete its full power-on self-test without interruption. The BMS runs a capacity verification routine at startup — cutting power mid-sequence writes a false battery fault to the event log that persists until the next clean, uninterrupted boot cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Zonare One Smartcart alarms low battery on a fully charged new pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Zonare BMS stores a learned capacity model from the previous OEM cell. When a new pack is installed, the firmware compares real-time voltage readings against that stored model and flags a mismatch as low battery — even at full charge. This is not a defective cell. The BMS needs one complete charge-discharge cycle to recalibrate its capacity estimate against the new cell's actual curve. Run the cart through one full cycle before clinical use and the alarm clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eZonare cart fails to power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage — typically losing 15–20% per month under normal conditions. If the pack voltage drops below the BMS recovery threshold (approximately 10.5V on a 15.6V Ni-MH pack), the protection circuit locks out power delivery entirely and the cart shows no response at the power button. Connect the OEM charger and leave it on charge for a minimum of four hours before attempting to power on. The charge IC applies a trickle recovery current at this voltage level before handing off to the main charge algorithm.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381410234458,"sku":"BWCS-ZNP850MD-1","price":310.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381410267226,"sku":"BWCS-ZNP850MD-2","price":370.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381410299994,"sku":"BWCS-ZNP850MD-3","price":415.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZNP850MD-1.webp?v=1778900625","url":"https:\/\/batteryweb.com\/products\/zonare-one-smartcart-replacement-battery-156v-13000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}