{"product_id":"roller-multi-press-mini-acc-replacement-battery-12v-2000mah-ni-mh","title":"Roller Multi-Press Mini ACC 12V 2000mAh Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eRoller Multi-Press Mini ACC — 12V Ni-MH Replacement Battery (571510)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 2000mAh Ni-MH replacement battery for the Roller Multi-Press Mini ACC and Multi-Press Typ 571 press tools. It replaces OEM part numbers 571510 and 571513. The pack slots directly into the tool's battery bay and connects to the same charging circuit the original cells used.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMulti-Press Mini ACC and Typ 571 compatibility:\u003c\/strong\u003e\n    Both models share a 12V Ni-MH battery bay with the same connector pinout and charge-termination logic. The tool's charger uses delta-V detection to end the charge cycle — this pack responds correctly to that signal without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated press cycles on a Multi-Press Mini ACC and monitored the BMS response during inrush on the hydraulic motor start. The overcurrent threshold held without nuisance trips across all test cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH cycle conditioning for press tools:\u003c\/strong\u003e\n    Run the first two press cycles at light load before using the tool at full crimp force. This lets the cells settle their internal resistance baseline so the charge termination circuit reads accurate delta-V on subsequent charges.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on hydraulic motor inrush during press trigger pull\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Multi-Press Mini ACC uses a small hydraulic motor that draws a high inrush current the moment the trigger fires. On a discharged or cold pack, this spike can exceed the BMS overcurrent threshold and cut the tool dead mid-cycle. Ni-MH cells tolerate inrush better than Li-ion but still drop voltage sharply when cell temperature is below 10°C. If the tool cuts out on trigger pull, warm the battery to room temperature before the next attempt — the pack's internal resistance drops significantly above 15°C and the BMS trip threshold is no longer breached.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePress tool bogs under load after a full charge indicator\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the tool feels sluggish or slows noticeably during the crimp stroke despite a freshly charged pack, the cause is usually voltage sag from high contact resistance at the battery terminals. Oxidised or dirty rail contacts reduce the effective voltage reaching the motor under load even when the open-circuit voltage reads 12V or above. Clean both the tool's battery contacts and the pack terminals with a dry cloth or fine abrasive, then recheck. Under load, a healthy 12V Ni-MH pack should not sag below 10.8V during the crimp stroke.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416084185178,"sku":"BWCS-DWC540PW-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416084217946,"sku":"BWCS-DWC540PW-2","price":95.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416084250714,"sku":"BWCS-DWC540PW-3","price":106.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DWC540PW-1.webp?v=1779760223","url":"https:\/\/batteryweb.com\/products\/roller-multi-press-mini-acc-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}