Wasp WDT3200 Barcode Scanner Replacement Battery 3.7V 1800mAh

Wasp WDT3200 / WPA1200 Series — 3.7V Li-ion Replacement Battery (633808920326)

This is a 3.7V 1800mAh Li-ion battery for the Wasp WDT3200, WDT3250, and WPA1200 handheld barcode scanners. It replaces OEM part 633808920326. These terminals are used in warehouse pick-and-pack, inventory counts, and retail stock operations where scanner downtime directly stalls workflow.

• WDT3200, WDT3250, and WPA1200 compatibility: All three models run the same 3.7V cell with the same connector and BMS handshake. The dock charging circuit recognises the pack by voltage profile and contact arrangement — not by an encrypted auth token — so a correctly specced replacement charges and communicates without modification.
• Bench tested on actual hardware: We cycled this pack through the WDT3200's combined wireless radio and scan-trigger draw profile. The BMS held stable across rapid scan bursts and did not trip on the inrush current spikes generated when the laser or imager fires.
• First-shift preparation on the WDT3200: After installing, seat the scanner in its cradle and let it complete a full charge cycle before putting it into active use. The scan-trigger inrush current is highest when the cell is near minimum voltage — starting the first shift on a partially charged cell increases the chance of a false BMS cutoff during the first pick run.

Cradle charging error on a new pack in the WDT3200 dock

The WDT3200 charging cradle reads pack state through gold-contact pins on the base of the scanner. If those contacts have oxidation or debris from warehouse handling, the dock can misread the pack's voltage and flag a charging fault even on a new cell. This is a contact resistance issue, not a faulty battery. Wipe the contacts on both the scanner base and the cradle with a dry lint-free cloth, reseat the scanner firmly, and confirm the charge indicator activates within 30 seconds.

Scanner losing wireless connection during a rapid scan burst

During a fast scan sequence, the WDT3200 fires the imager and transmits the decoded data over the wireless radio almost simultaneously. That combined inrush — scan trigger plus radio transmit — draws a short high-current spike from the cell. If the battery voltage sags below the radio module's minimum operating threshold during that spike, the wireless link drops. A cell with significant capacity fade cannot sustain voltage under combined load. Replace the pack and confirm resting voltage is at or above 3.6V before starting a shift.