About this replacement
Hiab Combi Drive 5000 — 7.2V Ni-MH Replacement Battery (9836721)
This 7.2V, 2000mAh Ni-MH battery replaces the original power cell in the Hiab Combi Drive 5000 wireless crane remote control. It also fits the Hi Drive 4000 ET and Olsberg DOH116A remotes sharing the same connector and BMS handshake profile. Swap it when the original no longer holds a charge or the remote stops responding mid-operation.
- Combi Drive 5000 and Hi Drive 4000 ET platform fit: These remotes share the same 7.2V cell configuration, physical connector, and charge management circuit. One replacement battery covers both platforms without modification.
- Bench tested on actual hardware: We ran this cell through the charge cycle and verified the BMS accepted charge without fault flags. Solenoid activation draws were tested and the cell held voltage through repeated relay trigger events without dropout.
- Monthly charge cycle during standby periods: Hiab crane remotes often sit unused for weeks between jobs. Ni-MH cells self-discharge at roughly 20–30% per month — leaving the battery unattended for a full season can push cells below recovery voltage. Charge the pack once a month even when the remote is not in use.
Solenoid activation causing power dropout on a freshly installed battery
When the Combi Drive 5000 triggers a crane function, the relay or solenoid draws a short inrush current spike that can exceed what a partially charged or degraded cell can supply. The BMS interprets this spike as an overload and cuts output momentarily, which the remote reads as a power failure. This is most common when a new battery is installed straight from storage — storage voltage on Ni-MH cells sits well below full charge. Charge the pack completely before first use and the dropout stops.
Remote showing low battery indicator immediately after cell swap
A new Ni-MH pack ships at storage voltage — typically around 6.0–6.5V for a 7.2V cell — not at full charge. The Combi Drive 5000 remote reads this as a depleted battery and triggers the low-battery warning straight away. This is not a faulty battery. Connect the pack to the charger for a full cycle until the charger indicates complete, then reinsert the battery. The low-battery indicator will clear once the cell reaches its nominal voltage.