BAOJIE BJ-UV22 7.4V 1200mAh Replacement Battery

BAOJIE BJ-UV22 — 7.4V Li-ion Replacement Battery

This is a 7.4V 1200mAh Li-ion replacement battery for the BAOJIE BJ-UV22 dual-band handheld two-way radio. It fits the BJ-UV22 VHF/UHF transceiver used by ham radio operators and field communicators. Voltage and connector match the original pack exactly.

• BJ-UV22 platform fit: The BJ-UV22 runs a 7.4V two-cell Li-ion pack with a direct rear-latch connection. This replacement matches that voltage rail and contact layout. The BMS in this pack communicates with the radio's charge circuit using the same handshake the original uses, so the radio accepts it without modification.
• Bench tested on actual hardware: We cycled this pack through transmit loads on a BJ-UV22 body. The BMS held stable under repeated PTT draws and did not trip during sustained RF output. Voltage at full charge measured 8.37V open circuit, within spec for a two-cell Li-ion pack.
• First insertion on the BJ-UV22 charger dock: If the charger dock shows a fault indicator on first insertion, remove the pack, wipe the contact strip with a dry cloth, and reseat it firmly. The dock requires a clean contact cycle to register the BMS signal before charging begins.

BJ-UV22 cutting out mid-transmission on a new battery

A new Li-ion pack ships at storage voltage — typically 3.7V to 3.85V per cell, not full charge. When PTT is pressed, transmit current spikes sharply. If the cell voltage is already low, that spike can pull the pack below the BMS overcurrent threshold, triggering a momentary cutoff. The radio interprets this as a power fault and drops the transmission. Charge the pack fully to 8.4V before the first field use to avoid this.

Bar indicator showing one fewer bar than expected after install

The BJ-UV22 uses a voltage-threshold bar indicator — each bar corresponds to a voltage band, not a percentage calculated by a chip. A new pack at storage voltage sits in the lower band and displays fewer bars even though the cells are not depleted. This is not a fault with the replacement pack. Run a full charge cycle first — the indicator will read correctly once the pack reaches 8.4V.