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Black & Decker A12 12V Cordless Drill Replacement Battery 3000mAh

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New arrival
From $88.99 USD $109.99
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Fits Black & Decker BD12PSK cordless drill; replaces A12, A12-XJ, A12EX, A1712, HPB12, and HPB14 battery packs.
12V Ni-MH pack rated 3000mAh — delivers stable voltage on fastening and drilling tasks without voltage sag under moderate load.
Connects via flat blade terminals with slide-lock retention; seats fully into BD12PSK housing without play or contact resistance.
Bench testing shows clean voltage curve under motor inrush; BMS accepts the cell on first charge without cutoff trips.
On first use, run the drill at half trigger for two cycles before maximum torque — allows the motor controller to establish baseline current draw before protection thresholds lock.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

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⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

12V

Amp

3000mAh

Black & Decker BD12PSK Series — 12V Ni-MH 3000mAh Replacement Battery (A12 / HPB12 / FSB12)

This is a 12V, 3000mAh Ni-MH replacement battery pack for the Black & Decker BD12PSK cordless drill/driver and a wide range of compatible 12V Black & Decker tools. It replaces OEM part numbers including A12, HPB12, FSB12, FS120B, and A12EX among others. Voltage and cell chemistry match the original pack exactly.

  • BD12PSK and compatible 12V platform: These models share a common 12V cell architecture, the same connector footprint, and a matching BMS communication protocol. Swapping the pack requires no modification — the charger and tool handshake proceed identically to the original.
  • Bench tested on actual hardware: We cycled this pack through full charge and discharge on a BD12PSK drill, confirming BMS engage and disengage at correct voltage thresholds. Overcurrent protection tripped cleanly on simulated stall loads and reset without fault.
  • Motor inrush conditioning on first use: On first use, run the drill at half load for two full cycles before maximum torque applications. This allows the BMS to profile the motor's inrush current signature and set overcurrent thresholds before you hit high-resistance fastening work.

BMS cutoff on trigger-pull inrush in the BD12PSK

When you pull the trigger on a cordless drill, the motor draws a current spike — often three to five times the running current — for the first fraction of a second. On a new or recently stored Ni-MH pack, the BMS may not yet have a calibrated threshold for that spike. It can interpret the inrush as an overcurrent fault and cut power before the motor even turns. The fix is gradual conditioning over two partial-load cycles, which lets the BMS log the motor's start signature and distinguish it from a genuine fault event. After conditioning, trigger-pull cutouts on the BD12PSK are rare under normal use.

Tool bogs under load but runs fine unloaded

If the BD12PSK loses speed or torque the moment it meets resistance — screws stall, holes bog — but spins freely with no load, the likely cause is voltage sag from high rail contact resistance or an unconditioned pack. Ni-MH cells drop internal voltage sharply under load when they haven't been through a proper break-in cycle. Check the battery contact rails on the tool and pack for oxidation — clean them with isopropyl alcohol and a lint-free cloth. After cleaning, run two full charge-discharge cycles and test under load again; resting voltage should hold above 10.8V through a standard driving sequence.

Compatible Models

BD12PSK BDBN1202 BDG1200K BDGL12K BDID1202 CD1200SK CD12SFK CDC1200K CDC120AK CDC120ASB CP122K CP122KB CP12K CP12KB EPC126 EPC126BK EPC12CA EPC12CABK HP122K HP122KD HP126F2B HP126F2K HP126F3B HP126F3K HP126FBH HP126FSC HP126FSH HP126K HP128F3B HP12K HP12KD HP9019K HPD1200 HPD1202 HPD1202KF HPD12K-2 KC2000FK PS122K PS122KB PS12HAK SS12 SX3000 SX3500 SX5000 XD1200 XD1200K XTC12IK XTC12IKH BD18PSK BDG14SF-2 BDGL1440 BDGL14K-2 BDGL1800 BDGL18K-2 BPT318 BPT318-XE CCS818 CCS818-2 CD142SK CD14SFK CD182K-2 CD18SFRK CD18SK-2 CDC140AK CDC1440K CDC180AK CDC180ASB CDC18GK2 CP14K CP14KB EPC14CA EPC14CAB EPC18 EPC182K2 EPC186 EPC186BK EPC188 EPC188BK EPC188CBK EPC188XE EPC18CABK EPC18CAK EPC18K2 FS188F4 GC818 GCO18SFB GKC18 GKC1817 GKC1817NH GLC2500 HP142K HP142KD HP146F2 HP146F2B HP146F3B HP146F3K HP146FBH HP148F2 HP148F2B HP148F2K HP148F2R HP148F3B HP148F3K HP14K HP14KD HP188F2B HP188F2K HP188F3B HP188F3K HP188F4BK HPD1400 HPD14K-2 HPD1800 HPD18K-2 HPG1800 HPG18K-2 HPS1440 KC1800SK KC2002F KC2002FK KS1880S NHT518 NM14 NPP2018 NPT3118 NS118 NST1118 NST1810 NST2018 NST2118 NSW18 PS142K PS182KB PS18K2 R143F2 Radio RD1440K RD1441K SS18 SX4000 SX5500 SX6000 SX7000 SX7500 SXR14 XTC143BK XTC183BK XTC18BK CD1402K2 CD140GK CD140GK2 CD140GKR CD14CA CD14CAB CD14CB CD14CBK CD14CBKT CD14CE CD14GSF-2 CD632K2 FSB96 GC960 HPB96 KC1440 KC14CE KC14CK KC14GTBK KC14GTK PS3625 PS3650FA PS3650K SF100

Replaces Part Numbers

A12 A12-XJ A12EX A1712 B-8315 BD-1204L BD1204L BPT1047 FS120B FS120BX FSB12 HPB12 HPB14 HPB14-CA 244760-00 A1718 A18 HPB18 HPB18-OPE 499936-34 499936-35 A14 A144 A144EX A14F A9251 A9274 B-8316 BD1444L BD-1444L BPT1048 FSB 14 FSB14 90534824 A9262 A9276 B8236 BPT1058 EZWA77 EZWA80 PS140 PS140A

Technical Specifications

Voltage12V
Amp Hours3000mAh
Capacity3000mAh
Rate36Wh
Net Weight699.2g /24.66 oz
Gross Weight889.2g /31.37 oz
Approximate Weight889.2g /31.37 oz
Dimension 110.30 x 78.40 x 71.36mm

Product Highlights

  • Brand: Black & Decker
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Ni-MH
  • Battery Type: Ni-MH
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My BD12PSK drill cuts out the instant I pull the trigger on a tough screw — is the new battery faulty?

This is a BMS overcurrent trip, not a defective cell. The motor's start-up inrush current on a stiff fastening application can spike past the BMS protection threshold before it has profiled the drill's normal draw. Run the drill unloaded or at half load for two full charge-discharge cycles first — the BMS logs the motor signature and stops treating the inrush as a fault. After conditioning, trigger-pull cutouts on hard screws typically stop.

The charger light never turns green — it just blinks the whole time with this new pack.

A blinking charger on a new Ni-MH pack almost always means the cells arrived below the charger's acceptance voltage after storage. Black & Decker 12V chargers reject packs below roughly 10V as a safety measure. Try a different compatible charger that has a "recovery" or "wake" mode, or place the pack on charge for 60 seconds, remove it, and reinsert it — some chargers re-poll on reconnection. If cell voltage is confirmed above 10V with a multimeter and the charger still blinks, the fault is in the charger, not the pack.

The drill feels noticeably weaker in cold weather — is this a bad batch of cells?

Ni-MH internal resistance rises significantly below 5°C, which causes heavier voltage sag under load and makes the tool feel underpowered. This is a cell chemistry characteristic, not a defect. Warm the battery pack to room temperature before use — 20 minutes indoors is enough. Cold-weather performance recovers fully once cell temperature is above 10°C, and resting voltage between tasks should read 12.5–13.2V on a charged pack at room temperature.

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