About this replacement
NBB Planar-C / Planar-EX — 3.6V Ni-MH Replacement Battery (2.250.1113)
This is a 3.6V, 700mAh Ni-MH rechargeable battery for the NBB Planar-C and Planar-EX wireless crane remote controls. It replaces OEM part number 2.250.1113. These remotes are used in industrial lifting operations, so a dead battery stops work until the cell is swapped and charged.
- Planar-C and Planar-EX compatibility: Both models run on the same 3.6V Ni-MH cell with the same connector and BMS handshake. One battery covers either remote — no wiring or housing modification needed.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on the Planar-C remote. The BMS accepted the cell without error flags, and the remote held communication with the crane receiver across the full discharge curve.
- First-use charge for crane remotes: Ni-MH cells ship at partial storage charge — typically 40–60% capacity. Before putting this remote back into crane operation, run a full charge cycle. A partial charge at first use will give you a misleadingly short cycle and may trigger the low-battery warning sooner than expected.
Solenoid activation causing power dropout on a freshly installed battery
When the remote sends a crane command, solenoid or relay activation draws a short inrush current spike that exceeds what a low or storage-charged Ni-MH cell can deliver cleanly. The remote's BMS reads this voltage sag as a fault and cuts power to protect the circuit. The fix is straightforward: charge the battery fully before the first crane command. A fully charged 3.6V Ni-MH cell at rated capacity handles the inrush without sagging below the BMS cutoff threshold.
Remote showing low-battery indicator immediately after cell swap
A new cell resting at storage voltage — typically 1.1–1.2V per cell — reads low to the remote's charge monitor before it has been topped up. This is not a faulty battery. Connect the remote to its charger and run a full charge cycle before drawing any conclusions. Once the cell reaches full charge, the indicator clears and the remote operates normally. If the low-battery warning persists after a complete charge, check the charger output and confirm contact between the battery terminals and the remote's connector.