HYT TB-61 Barcode Scanner Replacement Battery 3.6V 1800mAh

HYT TB-61 Handheld Scanner — 3.6V Ni-MH Replacement Battery (TB-61)

This is a 3.6V, 1800mAh Ni-MH replacement battery for HYT handheld barcode scanners using part numbers TB-61 and BNH-TC1688. It fits HYT scanning devices used in retail, warehouse, and inventory environments. Capacity is rated at 6.48Wh from the factory spec sheet.

• TB-61 and BNH-TC1688 platform: Both part numbers reference the same 3.6V single-cell Ni-MH pack with identical connector pinout and BMS handshake — the scanner's charge controller recognises either and completes the charge cycle without throwing a fault code.
• Bench tested on actual hardware: We cycled this pack through the HYT charge protocol and confirmed the BMS held a stable cutoff at the correct termination voltage. No false charge-complete triggers appeared during the delta-V detection phase.
• First-shift preparation: After installing, place the scanner in its cradle for a full charge cycle before using in pick-and-pack — the scan trigger inrush current is highest when the cell is near minimum, and a pre-charged cell prevents false BMS trips on the first shift.

Cradle showing charging error on a fresh pack

Ni-MH docks use delta-V detection to confirm a real battery is seated. A new cell at rest voltage can confuse the dock's sense circuit if contact resistance is high — the dock sees an unstable voltage curve and flags it as an error. Wipe the gold contacts on both the battery and the cradle with a dry cloth, then reseat the pack firmly. The dock should begin the charge cycle within 10 seconds of a clean connection.

Scanner losing wireless connection during rapid scan bursts

Back-to-back scans combine imager power draw with the wireless radio polling cycle — both hit the cell at the same time. On a depleted or degraded pack, this combined inrush causes momentary voltage sag below the scanner's radio-keep-alive threshold, dropping the wireless link. The fix is to ensure the pack is fully charged before a high-volume shift and to avoid running the battery below the low-battery warning indicator during continuous scanning. A rested, fully charged 1800mAh cell holds the voltage rail above 3.2V through the combined load.