HILTI SBP10 SFB105 Replacement Battery 9.6V 3300mAh

HILTI SFB105 / SF100A 9.6V Ni-MH Replacement Battery (SBP10)

This is a 9.6V Ni-MH battery rated at 3300mAh (31.68Wh), built to replace the original SBP10 pack. It fits the HILTI SFB105 and SF100A cordless drill/drivers. The connector and terminal layout match the original battery bay directly.

• SFB105 and SF100A platform fit: Both models run the same 9.6V rail with the same slide-in terminal block and latch geometry. One battery covers both tools without adapter or modification.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on the SFB105 platform. The BMS held stable through repeated trigger pulls and flagged no overcurrent faults during motor-start inrush testing.
• Motor inrush break-in on first use: On the first two cycles, run the drill at half load light fastening or low-torque drilling only. This gives the BMS time to profile the inrush current spike before you push it into max-torque or large-bit applications, reducing the chance of a premature overcurrent trip.

BMS Overcurrent Trip on SFB105 Motor-Start Inrush

When you pull the trigger hard on a fresh or cold pack, the motor draws a short surge of current that can be three to five times the running load. On Ni-MH packs, the BMS sets an overcurrent threshold during the first few discharge cycles if it hasn’t profiled the tool yet, it may interpret that inrush as a fault and cut the output instantly. The result looks like the battery is dead, but it’s a protective trip. Releasing the trigger, waiting five seconds, and re-engaging at lower speed usually resets the BMS and lets the cycle complete normally.

Tool Bogs Under Load After Sitting on the Shelf

Ni-MH cells self-discharge faster than Li-ion a pack left unused for two to three months can drop to a voltage low enough that the charger won’t accept it, or the tool runs noticeably weak even at full trigger. The cells haven’t failed; they need a conditioning cycle. Put the pack on the charger for a full uninterrupted charge, then run the tool through one complete discharge at medium load. Voltage should recover to 10.210.5V at the terminal after a full charge; anything below 9.6V under light load points to a cell imbalance rather than normal self-discharge.