{"product_id":"black-decker-bdg14sf-2-replacement-battery-144v-3000mah-ni-mh","title":"Black \u0026 Decker 499936-34 14.4V Ni-MH Replacement Battery","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBlack \u0026amp; Decker BDG14SF-2 Series — 14.4V Ni-MH Replacement Battery (499936-34)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V 3000mAh Ni-MH battery pack for the Black \u0026amp; Decker BDG14SF-2 cordless drill\/driver and compatible platforms. It replaces OEM packs 499936-34, 499936-35, HPB14, A14, A144, FSB14, and related part numbers. Capacity is sourced from the product spec — 3000mAh (43.2Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBDG14SF-2 and BDGL platform compatibility:\u003c\/strong\u003e\n    The BDG14SF-2, BDGL1440, and BDGL14K-2 all run the same 14.4V rail with an identical battery footprint and connector pinout. The BMS handshake protocol and terminal layout are shared across this generation, so one pack covers the full platform family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through repeated trigger-pull events on a BDG14SF-2 under variable chuck load. The BMS held trip thresholds stable across motor-start inrush spikes and did not false-trip during sustained mid-torque fastening sequences.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eNi-MH break-in on first use:\u003c\/strong\u003e\n    Run the drill at half load for the first two cycles before applying maximum torque. This allows the BMS to profile motor inrush current draw and calibrate overcurrent protection thresholds before heavy fastening work begins.\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 — why the BDG14SF-2 cuts out instantly\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen you pull the trigger on a drill under load, motor inrush current spikes sharply in the first few milliseconds — often two to three times the running current. On a new or cold Ni-MH pack, the BMS overcurrent threshold can be set conservatively, and that spike trips the protection circuit before the motor gets up to speed. The pack appears dead, but a short rest resets the latch. If this happens repeatedly on a new pack, run two partial-load break-in cycles to allow the BMS to profile the inrush signature before it locks thresholds.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCharger not recognising a new pack after storage — blinking or no-charge state\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH packs stored for several months can self-discharge below the charger's acceptance voltage floor. Most Black \u0026amp; Decker 14.4V chargers will not initiate a full charge cycle if cell voltage reads below roughly 10V on the pack. The fix is a manual recovery charge — some chargers have a recovery or reconditioning mode; if not, a compatible Ni-MH charger capable of trickle-charging at 0.1C will bring the pack up above the acceptance threshold. Once the pack reads above 12V, the standard charger will resume the normal charge cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416077860954,"sku":"BWCS-BPS142PX-1","price":92.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416077893722,"sku":"BWCS-BPS142PX-2","price":108.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416077926490,"sku":"BWCS-BPS142PX-3","price":120.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPS142PX-1.webp?v=1779760117","url":"https:\/\/batteryweb.com\/products\/black-decker-bdg14sf-2-replacement-battery-144v-3000mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}