About this replacement
Dreme 7300-N/8 & MiniMite Series — 4.8V Ni-MH Replacement Battery (755-01)
This is a 4.8V, 1500mAh Ni-MH replacement battery for the Dreme 7300-N/8 and MiniMite 4.8-Volt Cordless Two-Speed Rotary Tool. It replaces OEM part number 755-01. Fits the compact battery bay on both models without modification.
- 7300-N/8 and MiniMite compatibility: Both models run the same 4.8V voltage rail, share the same physical connector, and use identical BMS handshake logic — which is why one cell pack covers the full lineup. Swapping between these two models is not an issue at the electrical level.
- Bench tested on actual hardware: We ran this pack through repeated trigger-pull cycles on the 7300-N/8, monitoring the BMS response to motor-start inrush current. The overcurrent protection threshold held consistently without false trips across both speed settings.
- First-use load conditioning: On initial use, run the tool at low speed for the first two cycles before switching to high-speed or high-torque applications. This gives the BMS time to profile the motor's inrush draw and set accurate overcurrent thresholds before you push the tool hard.
BMS cutoff on motor-start inrush in the 7300-N/8
The 7300-N/8 draws a short inrush spike at the moment the trigger is pulled — especially on high speed. Ni-MH packs that have been sitting in storage have elevated internal resistance, which amplifies the voltage dip at that inrush moment. The BMS reads that dip as an overcurrent event and cuts power to protect the cells. Running two low-speed conditioning cycles before full-load use lowers internal resistance enough to prevent false BMS trips on trigger pull.
Charger not recognising the pack after storage
Ni-MH cells self-discharge during storage, and if the pack drops below roughly 3.6V total (0.9V per cell average), many OEM chargers refuse to begin a charge cycle. The charger's acceptance circuit expects a minimum voltage before it activates — it's not a charger fault or a dead battery. To recover the pack, use a Ni-MH charger with a trickle or recovery mode to bring the pack up to at least 4.0V before switching to normal charge. Once the pack reads above 4.0V, standard charging resumes normally.