About this replacement
Panasonic Handheld H320 Series — 3.7V Li-ion Replacement Battery (JT-H320HT-E1)
This 3.7V Li-ion cell replaces the original battery in the Panasonic Handheld H320 barcode scanner series. It fits the JT-H320HT, JT-H320HT-E1, and JT-H320HT-E2 scanner variants. Capacity is 890mAh (3.29Wh), matching the OEM specification.
- H320 series fit: The JT-H320HT, JT-H320HT-E1, and JT-H320HT-E2 share the same battery bay dimensions, connector pinout, and BMS handshake protocol — one cell covers the range. The JT-H320BT-10 also draws from this same pack format.
- Bench tested on actual hardware: We ran this pack through scan-trigger inrush and wireless polling cycles on the H320 platform. The BMS handled simultaneous radio and laser draw without tripping, and the protection circuit capped discharge correctly at the low-voltage threshold.
- First-shift preparation: After installing, seat the scanner in its cradle and run a full charge cycle before the first pick-and-pack shift. Scan trigger inrush is highest when the cell sits near minimum voltage — a fully charged pack prevents false BMS trips during the first burst sequence of the day.
Cradle showing a charging error on a new pack
The H320 cradle reads pack state through the dock contacts before committing to a charge cycle. Oxidation or debris on either the cradle pins or the battery contact pads creates enough resistance to trigger a handshake fault. The dock interprets this as a pack error, not a contact issue, so it throws a charging error LED rather than starting the cycle. Wipe the battery contact pads and cradle pins with a dry cloth, reseat firmly, and the charge cycle should initiate within 10 seconds.
Scanner losing wireless connection during rapid scan bursts
The H320 draws from the same cell for both the wireless radio and the scan trigger simultaneously. During a fast scan burst, the combined inrush pulls the cell voltage down sharply — if the pack is partially depleted, this momentary sag drops below the radio module's minimum operating threshold. The wireless stack drops the connection, and the scanner appears to freeze or disconnect mid-session. Charge the pack above 3.9V before a high-frequency scanning shift to keep the voltage headroom sufficient for both draws at once.