Würth ABS 12-M2 Replacement Battery 12V 1500mAh Ni-MH
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Würth ABS 12-M2 Replacement Battery 12V 1500mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
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Battery Care Tips
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.
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Delivery and Shipping
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Disclaimer
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Würth ABS 12-M2 Replacement Battery 12V 1500mAh Ni-MH - is backordered and will ship as soon as it is back in stock.
Voltage
12V
Amp
1500mAh
Wurth ABS 12-M2 — 12V Ni-MH Replacement Battery (702 300 412)
This is a 12V, 1500mAh Ni-MH replacement battery for the Wurth ABS 12-M2 cordless drill/driver. It fits the ABS 12-M2 platform across its model variants and restores full tool function when the original cell pack has degraded. Capacity is 1500mAh (18Wh), matching the original specification.
- ABS 12-M2 platform fit: These variants — ABS 12-M2, ABS12M2, ABS 12M2 — share the same 12V rail, connector housing, and BMS handshake protocol, so one cell pack covers the range without modification.
- Bench tested on actual hardware: We cycled this pack through repeated trigger-pull inrush events on the ABS 12-M2 drill. The BMS held the overcurrent threshold steady across load spikes without nuisance tripping under normal drill use.
- Motor inrush break-in: On first use, run the drill at half load for two cycles before maximum torque applications. This lets the BMS profile the motor inrush current draw and set overcurrent protection thresholds accurately before heavy fastening work begins.
BMS cutoff on motor-start inrush with the ABS 12-M2
The ABS 12-M2 draws a sharp current spike the moment the trigger engages — this inrush can be three to five times the running current. A fresh or cold Ni-MH pack has slightly elevated internal resistance, which amplifies the voltage sag at that instant. If the BMS reads the sag as an overcurrent fault, it cuts the output before the motor reaches operating speed. Running two break-in cycles at reduced load lets the BMS calibrate its trip threshold to the actual motor signature of this drill.
Charger not recognising the new pack after storage
Ni-MH packs that have sat in storage can drop below the voltage floor the charger uses to confirm a valid battery is present. The charger sees a voltage it does not recognise as a live pack and refuses to begin the charge cycle. Place the pack in the charger and press the tool trigger briefly to draw a small load — this can nudge the terminal voltage up enough for the charger to accept it. If the charger still rejects the pack, confirm open-circuit voltage is above 9.6V before re-attempting.
Compatible Models
Replaces Part Numbers
Technical Specifications
Product Highlights
- Brand: Wurth
- 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 Wurth ABS 12-M2 cuts out the instant I pull the trigger — is the battery faulty?
This is a BMS overcurrent trip, not a dead cell. The motor-start inrush spike on the ABS 12-M2 can exceed the BMS protection threshold, especially on a new or cold pack with higher internal resistance. Run the drill unloaded for a full discharge-recharge cycle to let the BMS recalibrate its trip point. If it still cuts on trigger pull, check the battery rail contacts for corrosion — dirty contacts raise resistance and worsen the inrush voltage sag.
The drill bogs down under load and feels weaker than it used to — what's causing that?
Voltage sag under load is the cause. When internal resistance rises — from cell age, repeated shallow cycling, or dirty contacts — the pack voltage drops under torque demand and the motor loses power. Clean the battery terminals on both the pack and the tool with a dry cloth, then run two full discharge cycles to let the cells stabilise. If the sag persists after two cycles, measure the pack voltage under load — it should hold above 10.8V during normal drilling; anything lower points to cell degradation.
The ABS 12-M2 battery drains noticeably faster in cold weather — is something wrong?
Nothing is wrong — this is normal Ni-MH behaviour below 5°C. Cold temperatures raise internal cell resistance, which reduces the usable capacity the pack can deliver before voltage drops to the tool's cutoff point. Store the battery indoors at room temperature and fit it to the drill just before use rather than leaving it in an unheated van or site shed overnight. A pack warmed to above 15°C before use will deliver noticeably stronger and more consistent torque output.
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