{"product_id":"metabo-bsz-18-replacement-battery-18v-2100mah-ni-mh","title":"Metabo BSZ 18 Replacement Battery 18V 2100mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMetabo BSZ 18 Series — 18V Ni-MH Replacement Battery (6.25484)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 18V Ni-MH battery rated at 2100mAh (37.8Wh), built to the OEM part number 6.25484. It fits the BSZ 18, BSZ 18 Impuls, BSZ 18 Impuls Li, and BSZ 18 Impuls Li Power cordless drill\/drivers. Voltage and connector match the original Metabo battery slide-in platform for these models.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBSZ 18 Impuls platform compatibility:\u003c\/strong\u003e\n    The BSZ 18 and Impuls variants share the same 18V rail, slide-in connector geometry, and BMS handshake protocol — all confirmed against the 6.25484 spec. One battery covers the full model range listed.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge\/discharge cycles on a BSZ 18 drill platform. The BMS held stable through trigger-pull inrush spikes and did not trip under repeated short-burst driving cycles. Cell balance across the Ni-MH pack stayed within acceptable variance.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use break-in on Ni-MH cells:\u003c\/strong\u003e\n    Run the drill at half load — light drilling, slow fastener driving — for the first two cycles. Ni-MH cells reach full charge acceptance capacity only after the cell chemistry stabilises through initial cycling. Full-torque applications before break-in can suppress long-term capacity.\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 BSZ 18 motor-start inrush surge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eEvery trigger pull on the BSZ 18 creates a brief current spike as the motor overcomes static load. On a depleted or cold Ni-MH pack, internal resistance rises sharply — and that spike can push current draw past the BMS overcurrent threshold before the motor reaches running speed. The BMS interprets this as a fault and cuts the output rail. This is not a defective battery; it is the protection circuit doing its job. Let the pack warm to room temperature and charge it fully before the next use session.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger not recognising the pack after extended storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells self-discharge during storage — if a pack sits unused for several months, cell voltage can drop below the charger's acceptance threshold, and the charger will reject it or show a fault light. This does not mean the pack is dead. Many Metabo chargers require a minimum of around 1V per cell to initiate a charge cycle. A short \"wake\" charge on a compatible Ni-MH charger with a force or recovery mode will bring the cells back above the acceptance floor. Once the charger accepts the pack, run a full charge cycle before putting the battery into the tool.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416064360538,"sku":"BWCS-MTX484PW-1","price":97.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416064393306,"sku":"BWCS-MTX484PW-2","price":114.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416064426074,"sku":"BWCS-MTX484PW-3","price":127.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTX484PW-1.webp?v=1779760055","url":"https:\/\/batteryweb.com\/products\/metabo-bsz-18-replacement-battery-18v-2100mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}