{"product_id":"black-decker-bd12psk-replacement-battery-12v-2000mah-ni-mh","title":"Black \u0026 Decker A12 12V Cordless Drill Replacement Battery 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBlack \u0026amp; Decker BD12PSK Series — 12V Ni-MH 2000mAh Replacement Battery (A12 \/ HPB12)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V 2000mAh Ni-MH replacement battery for the Black \u0026amp; Decker BD12PSK cordless drill\/driver and compatible models in the 12V platform. It replaces OEM part numbers including A12, HPB12, FSB12, and FS120B. Voltage and chemistry match the original pack specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBD12PSK platform fit:\u003c\/strong\u003e\n    The BD12PSK and related models share a common 12V Ni-MH battery architecture with the same connector geometry, cell count, and terminal orientation. A12 and HPB12 are interchangeable designations for the same physical pack used across this drill family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on a BD12PSK chassis. The BMS held voltage within spec across both low-load and high-torque trigger pulls, and the charger handshake completed without error codes on a standard Black \u0026amp; Decker 12V charger.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH motor conditioning tip:\u003c\/strong\u003e\n    On first use, run the drill at half load — light fastening, no high-torque driving — for two full cycles before tackling heavy applications. This lets the battery's internal resistance stabilise and gives the charger accurate data for the conditioning cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS overcurrent trip on trigger-pull inrush in the BD12PSK\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe BD12PSK motor draws a brief inrush spike the moment the trigger is pulled — this spike can be several times the normal running current. On a new or recently stored Ni-MH pack, the BMS may not yet have profiled this inrush curve and will trip the overcurrent threshold as a precaution. The result is an instant cutout on trigger pull, even with a fully charged battery. Running two light-load cycles first allows the BMS to set a wider inrush window before you apply full torque.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTool bogs and loses torque mid-task — voltage sag under load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eVoltage sag happens when the cell stack can't sustain current under sustained load — the terminal voltage drops and the drill loses torque or slows noticeably. On Ni-MH chemistry this is often caused by high contact resistance at the battery terminals, not cell failure. Clean the battery and tool contacts with isopropyl alcohol and check for oxidation or debris on the terminal strips. A healthy 12V Ni-MH pack should hold above 10.8V under moderate drill load; anything lower at the terminals points to a contact or cell issue.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416073076826,"sku":"BWCS-BPS712PX-1","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416073109594,"sku":"BWCS-BPS712PX-2","price":88.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416073142362,"sku":"BWCS-BPS712PX-3","price":97.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPS712PX-1.webp?v=1779760116","url":"https:\/\/batteryweb.com\/products\/black-decker-bd12psk-replacement-battery-12v-2000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}