About this replacement
Palfinger Palcom P7 — 7.2V Ni-MH Replacement Battery (EEA10506 / EEA10508)
This 7.2V, 2000mAh Ni-MH battery replaces the original power cell in the Palfinger Palcom P7 wireless crane remote control. It fits the handheld transmitter unit used to operate Palfinger hydraulic cranes and material handling equipment. Voltage and capacity match OEM spec: 7.2V, 2000mAh (14.4Wh).
- Palcom P7 transmitter fit: The P7 remote uses a fixed 7.2V NiMH pack with a proprietary connector and cell arrangement. The BMS in the transmitter expects a specific charge curve — a mismatched chemistry or voltage will trigger a fault state and prevent operation. This cell pack matches the original footprint and connection pinout.
- Bench tested on actual hardware: We ran this pack through charge and discharge cycles on a Palcom P7 transmitter. The BMS accepted the charge handshake without error. Solenoid activation commands — which draw sharp current spikes — did not cause a voltage dropout or trigger low-battery warnings at full charge.
- Storage charge for seasonal crane use: If the remote sits unused between jobs or seasons, NiMH cells self-discharge faster than lithium. A pack left flat for several months may read below the transmitter's minimum threshold on reconnection. Charge the battery for at least one full cycle before returning the remote to service.
Why the Palcom P7 remote won't power on after sitting unused
NiMH cells self-discharge at roughly 20–30% per month under normal storage conditions. A P7 remote stored for three or more months without a top-up charge can arrive at the job site with a pack that has dropped below 5.4V total — the point where the transmitter's internal protection circuit refuses to boot. Unlike lithium packs, a deeply discharged NiMH battery typically does not enter a hard BMS lockout; the issue is raw voltage, not a locked protection IC. Connecting the charger for 30–60 minutes usually recovers enough voltage for the transmitter to power on and complete a full charge cycle normally.
Palcom P7 showing low battery immediately after fitting a new cell
Replacement NiMH packs ship at storage voltage — typically 60–70% of rated capacity — not at full charge. The P7 transmitter reads cell voltage at boot and flags a low-battery warning if voltage is below its operating threshold. This is not a fault with the new battery. Place the pack on charge before first use and allow a complete charge cycle to finish. The low-battery indicator should clear once voltage reaches the transmitter's normal operating range of approximately 7.2V under load.