Globus Genesy 300 Replacement Battery 7.2V 2000mAh

Globus Genesy 300 / 500 / 600 / 1000 — 7.2V Ni-MH Replacement Battery (PBT MH0089)

This is a 7.2V 2000mAh Ni-MH replacement battery for the Globus Genesy electrotherapy range. It fits the Genesy 300, 500, 600, and 1000 — portable neuromuscular stimulation devices used in pain management and muscle rehabilitation. Capacity figures are sourced from the product data, not estimated.

• Genesy series compatibility: The 300, 500, 600, and 1000 all share the same 7.2V battery rail, connector footprint, and BMS handshake protocol. One cell specification covers the full range without modification.
• Bench tested on actual hardware: We ran charge and discharge cycles on this cell under the Genesy load profile. The BMS accepted the cell, completed its verification sequence, and reported correct state-of-charge across all test units.
• Power-on self-test after installation: After fitting this battery, allow the Genesy device to complete its full startup self-test without interruption. Cutting power during this sequence triggers a false battery fault flag that will persist until the next clean reboot cycle.

Genesy device not completing boot sequence on a freshly installed battery

Ni-MH cells leave storage at a reduced resting voltage — often below the threshold the Genesy BMS expects to see during its boot verification step. The device interprets this low resting voltage as a fault rather than a new, uncharged cell. A full charge cycle before first use brings the cell to the correct voltage window, allowing the BMS to pass the boot check. If the boot failure persists after one full charge, check that the battery contacts are clean and fully seated.

Charge indicator not reaching 100% on the first charge cycle

On first charge, the Genesy charge IC applies a conservative current limit to an unfamiliar cell — this is normal BMS behaviour, not a fault. The charge cycle will terminate earlier than expected because the IC has not yet learned the cell's full capacity curve. Run one complete charge-discharge-charge cycle and the charge IC recalibrates its endpoint detection. After that second charge, the indicator should reach full charge at the correct point.