About this replacement
Metabo BS 14.4 LTX Impuls — 14.4V Li-ion Replacement Battery (6.25467)
This 14.4V 5000mAh Li-ion pack replaces the original battery on the Metabo BS 14.4 LTX Impuls cordless drill-driver and fits a range of compatible 14.4V Metabo platforms including the ULA 14.4-18 and BS 14.4 variants. It matches the OEM voltage rail, connector footprint, and BMS communication protocol of the original pack. Capacity is rated at 5000mAh (72Wh).
- BS 14.4 LTX platform compatibility: The BS 14.4 LTX Impuls, ULA 14.4-18, and BS 14.4 6.02105.50/51 all share the same 14.4V slide-rail connector and BMS handshake protocol — that is why a single pack covers this group. The connector locks into the same receiver slot and communicates cell state to Metabo chargers without adapters.
- Bench tested on actual hardware: We ran this pack through charge-discharge cycles on a BS 14.4 LTX Impuls. The BMS responded correctly to motor-start inrush current, cell balancing activated between cycles, and the pack was accepted immediately by a Metabo SC 60 Plus charger without error codes.
- First-use break-in on the drill: On first use, run the drill at half load for two cycles before applying maximum torque — this lets the BMS profile the motor inrush current draw and set its overcurrent protection thresholds accurately before you put the pack under full stress.
BMS cutoff on trigger-pull inrush in the BS 14.4 LTX Impuls
When you pull the trigger on the BS 14.4 LTX Impuls under load, the motor draws a short inrush spike that can be three to five times the running current. A new pack or one coming out of storage may have its overcurrent threshold set conservatively, causing the BMS to trip and cut power before the motor reaches speed. This is not a fault with the cells — it is the BMS protecting them against what it reads as an unsafe draw. Running two light-load break-in cycles allows the BMS to log the motor's inrush signature and widen its trip threshold accordingly.
Charger not recognising the pack after it has been sitting unused
If the pack has been in storage for several months, individual cells can self-discharge below the charger's minimum acceptance voltage — typically around 2.5V per cell. The Metabo charger reads this as a fault and either blinks red or shows no activity. Place the pack in the charger and leave it for 10–15 minutes without removing it — most Metabo chargers include a recovery mode that trickle-charges below-threshold packs back up to the acceptance floor. If the charger accepts the pack, a full charge cycle follows automatically. If the pack remains unrecognised after 20 minutes, check each cell group with a multimeter; any cell below 2.0V indicates a cell that will not recover.