About this replacement
Vocollect Talkman T2 / T2X — 7.4V Li-ion Replacement Battery (730025)
This 7.4V 2600mAh lithium-ion pack replaces the OEM battery in the Vocollect Talkman T2 and T2X voice-directed picking terminals. It fits the wearable handheld used across warehouse and distribution centre pick-and-pack operations. Confirmed compatible with OEM part numbers 730025, 730021, BT-602-1, and CWI26591.
- T2 and T2X platform fit: Both models share the same battery bay geometry, connector pinout, and BMS handshake protocol — one pack covers both terminals without modification.
- Bench tested on actual hardware: We cycled this pack through simulated pick-burst loads combining simultaneous wireless polling and scan trigger draws. The BMS held steady across both inrush events without tripping into protective cutoff.
- First-shift pre-charge: After installing, seat the terminal in its charging cradle and run a full charge cycle before the first shift. Scan trigger inrush current is highest when the cell sits near minimum charge — starting a shift on a fully charged cell prevents false BMS trips during the first pick run.
Why the Talkman T2 drops its wireless link during rapid scan bursts
The T2 draws from the same cell to power both the 802.11 radio and the barcode imager. During a rapid scan burst, the combined inrush from both subsystems briefly drags cell voltage below the radio's minimum operating threshold. The BMS reads this as a brownout condition and momentarily suspends output to protect the cell. A fresh, fully charged pack with low internal resistance handles the combined spike without the voltage sag that triggers the dropout.
Cradle showing a charging error immediately after fitting the new pack
This is almost always contact resistance between the dock pins and the battery terminals, not a fault in the pack itself. Oxidation or debris on either surface adds enough resistance that the cradle's charge controller reads an open circuit and throws the error. Wipe the battery contacts and the cradle pins with a dry lint-free cloth, then reseat the terminal firmly. If the error clears within 30 seconds of reseating, the pack is fine — the cell was just not making a clean connection.