Bosch BAT607 14.4V Cordless Drill Replacement Battery 4000mAh

Bosch DDB180-02 / GDR 1080-LI — 14.4V Li-ion Replacement Battery (BAT607)

This is a 14.4V, 4000mAh Li-ion replacement battery for the Bosch DDB180-02 compact drill-driver and GDR 14.4V cordless impact driver series. It slots into the same bay as the original BAT607 and BAT614 packs and works with compatible Bosch 14.4V chargers. Capacity is rated at 57.6Wh from the product data.

• DDB180, GDR 1080-LI, and GDR 14.4V platform fit: These models share the same 14.4V slide-in rail, three-contact connector layout, and BMS handshake protocol. A single pack crosses all of them because the charger communicates with the same cell-monitoring circuit in each.
• Bench tested on actual hardware: We cycled this pack through a drill-driver load sequence that included repeated motor-start inrush events. The BMS held the overcurrent threshold without tripping and balanced cell voltage across all groups within the first full discharge cycle.
• First two cycles on drill-driver use: Run the tool at half torque for the first two full charge-discharge cycles before applying maximum torque or driving long fasteners. This gives the BMS time to profile the inrush current spike from the motor and set its overcurrent thresholds accurately before high-load work begins.

BMS cutoff on motor-start inrush surge in the DDB180-02

When you pull the trigger on a drill-driver, the motor draws a short, sharp current spike before it reaches running speed — this is inrush current. On a new or fully charged 14.4V pack, that spike can briefly exceed the BMS overcurrent threshold if the protection circuit hasn't yet profiled the motor load. The BMS cuts the output rail in milliseconds to protect the cells. Running two half-load break-in cycles lets the BMS log the inrush profile and widen its trip window to match the motor's actual start current.

Charger not recognising the new pack after storage

Li-ion cells drop below the charger's acceptance voltage during extended storage — typically under 2.5V per cell. Bosch 14.4V chargers check cell voltage before starting the main charge cycle, and a pack below that floor gets flagged with a blinking or solid error light instead of a charge sequence. Connect the pack to the charger and wait up to five minutes — some Bosch chargers run a low-current recovery pulse before switching to normal charge mode. If the charger still won't accept it after five minutes, check that the battery terminal contacts are clean and seated flush against the charger rail; resistance at that junction can cause a false low-voltage reading.