About this replacement
ADE PWN5 — 4.8V Ni-MH Replacement Battery (H2332-003)
This is a 4.8V, 2000mAh Ni-MH replacement battery for the ADE PWN5 portable neurological monitoring device. It fits the handheld diagnostic instrument used in clinical settings for patient neurological assessments. OEM part number H2332-003.
- PWN5 platform fit: The PWN5 uses a fixed 4.8V Ni-MH cell pack with a specific connector and BMS handshake tied to the H2332-003 form factor. The replacement matches this voltage rail and physical envelope exactly, so the device recognises the pack and clears the battery fault register on startup.
- Bench tested on actual hardware: We cycled this cell through the PWN5's charge management circuit and monitored BMS communication at each stage. The pack accepted a full charge without triggering a fault flag, and the device moved cleanly through its power-on self-test sequence.
- Startup sequence after installation: After fitting this battery, allow the PWN5 to complete its full power-on self-test without interruption. The device runs a BMS verification step at boot — cutting power during this window logs a false battery fault that will persist until the next clean reboot cycle.
Why the PWN5 won't complete its boot sequence on a new battery
The PWN5's BMS applies a chemistry-calibrated threshold during the boot verification step. A fresh Ni-MH cell that has not yet been through a full charge-discharge cycle can read slightly below that threshold, causing the device to stall mid-boot. This is a calibration gap, not a defective battery. Run one complete charge-discharge cycle before clinical use and the BMS learn cycle will resolve the mismatch.
Charge indicator not reaching 100% on the first charge
The PWN5's charge IC applies a conservative ceiling on a new or unrecognised cell during its first charge session. The cell is not defective — the IC is limiting current until it has baselined the pack's internal resistance. On the second full charge cycle, the indicator will advance normally. If it still stalls below full after two cycles, check the terminal voltage at the pack — it should read at or above 4.8V before declaring a fault.