Harris BZ1032 Two-Way Radio Replacement Battery 7.2V 2000mAh

Harris BZ1032 — 7.2V Ni-MH Replacement Battery

This is a 7.2V, 2000mAh Ni-MH battery for the Harris BZ1032 portable two-way radio. It replaces the original factory pack when capacity has dropped or the cell has failed entirely. Voltage and chemistry match the BZ1032's onboard power circuit directly.

• BZ1032 platform fit: The BZ1032 runs a 7.2V Ni-MH power rail with a contact layout and BMS handshake specific to Harris portables in this series. This pack matches that voltage rail and connector geometry — the radio's protection circuit recognises the new cell without reconfiguration.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on a Harris-compatible dock and monitored BMS response under simulated PTT load. The protection circuit held stable through the transmit current spike without tripping into lockout.
• First charge on a Harris dock: If the dock shows a fault or blink on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. Harris chargers require a clean contact cycle to initiate the charge handshake on a new Ni-MH cell coming in at storage voltage.

Why the BZ1032 cuts out mid-transmission on a freshly inserted pack

Ni-MH cells ship at partial storage voltage — typically 1.1–1.15V per cell, which puts a 6-cell 7.2V pack around 6.6–6.9V at rest. When PTT is pressed, the transmit current spike pulls voltage down momentarily. If the radio's low-voltage cutoff threshold sits close to that sag point, it reads an undervoltage condition and interrupts transmission. This is not a faulty pack — it is the radio protecting itself before the cell has reached working charge. Run a full charge cycle on the dock before first use in the field.

Bar indicator stuck on one bar after a full charge cycle

The BZ1032 uses a simple voltage-threshold bar indicator — it reads resting cell voltage and maps it to a bar level. A new Ni-MH pack coming off its first charge may rest at a slightly lower open-circuit voltage than a conditioned cell, which can push the reading one threshold below where it should land. Run one full discharge-to-cutoff and recharge cycle on the Harris dock. After that conditioning cycle, resting voltage stabilises above the threshold and the indicator reflects actual capacity correctly.