{"product_id":"brandtech-handystep-replacement-battery-48v-750mah-ni-mh","title":"BrandTech HandyStep 4.8V Ni-MH Compatible Battery 705025","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBrandTech HandyStep \/ AutoRep E Series — 4.8V Ni-MH Replacement Battery (705025)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 750mAh Ni-MH replacement battery for the BrandTech HandyStep, AutoRep E, and Rainin AutoRep E Repeating Dispenser. It replaces OEM part numbers 705025, RA 17003233, BT705025, and AR-BA. The cell pack matches the original voltage rail and connector so the device powers on without adapter modifications.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHandyStep and AutoRep E compatibility:\u003c\/strong\u003e\n    These models share the same 4.8V four-cell Ni-MH architecture, connector pinout, and BMS handshake protocol. One cell pack covers all listed variants without rewiring or firmware changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge, full load, and cutoff on a HandyStep unit. The BMS accepted the cell within the first cycle and flagged no chemistry mismatch. Voltage at cutoff matched OEM discharge curves within tolerance.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-swap self-test protocol:\u003c\/strong\u003e\n    After installing this battery, let the HandyStep complete its full power-on self-test without interrupting or power-cycling the unit. The device runs BMS verification at startup. Cutting power mid-sequence logs a false battery fault that persists 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 HandyStep shows a low-battery alarm immediately after a confirmed full charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe HandyStep's BMS stores a capacity baseline from the previous cell pack. A new Ni-MH cell has a slightly different internal resistance and charge acceptance curve than a degraded OEM cell. On the first cycle, the BMS compares the new cell's voltage response against that stored baseline and flags the mismatch as a fault rather than a fresh cell. Running one complete charge-discharge cycle resets the learned baseline to match the new pack, and the alarm clears without any manual intervention.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice will not power on after battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage. If the pack voltage drops below the HandyStep's BMS recovery threshold — typically around 4.0V for a 4.8V pack — the device will not boot even when connected to the charger. The BMS blocks current flow to prevent damage from charging a deeply discharged pack at full rate. Connect the battery to the charger and leave it undisturbed for at least two hours; most charge ICs apply a low-rate trickle below threshold before stepping up to normal charge current, which recovers the pack to a bootable voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43381498445914,"sku":"BWCS-BTH025MD-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43381498478682,"sku":"BWCS-BTH025MD-2","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43381498511450,"sku":"BWCS-BTH025MD-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BTH025MD_1.webp?v=1778901248","url":"https:\/\/batteryweb.com\/products\/brandtech-handystep-replacement-battery-48v-750mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}