AdirPro PS236B Barcode Scanner Replacement Battery 3.7V 5200mAh

AdirPro PS236B — 3.7V Li-ion Replacement Battery (441820900006)

This 3.7V, 5200mAh Li-ion battery replaces the original pack in the AdirPro PS236B handheld barcode scanner. It fits the PS236B directly and matches the OEM voltage and connector spec. Capacity figure is taken from the product data — 19.24Wh total energy.

• PS236B platform fit: The PS236B uses a single-cell 3.7V Li-ion architecture with a BMS that monitors cell voltage before enabling the scan trigger and wireless radio. This pack matches that voltage rail and communicates with the onboard BMS so the scanner powers on normally without a manual override.
• Bench tested on actual hardware: We cycled this pack through repeated scan-burst sequences — alternating imager trigger and wireless polling draws. The BMS held cutoff voltage steady at the low end and recovered cleanly to full charge through a standard dock cycle.
• First-shift preparation on the PS236B: After installing, place the scanner in its cradle for a full charge cycle before pulling triggers on the floor. The scan trigger inrush current is highest when the cell is near minimum — a pre-charged pack prevents false BMS trips during the first pick-and-pack shift.

Cradle showing a charging error after fitting the new pack

The PS236B dock uses contact resistance readings to confirm a valid battery is seated. If the dock reports a charging error with a new pack, the most common cause is oxidation or debris on the gold contacts on either the pack or the dock cradle. Wipe the pack contacts with a dry lint-free cloth, then firmly reseat the scanner so all three contacts engage flush. If the error clears within 30 seconds, the pack is charging normally — dock voltage should read 4.2V at the charge pins when active.

Scanner losing wireless connection during rapid scan bursts

During a rapid scan sequence, the PS236B draws current simultaneously from the imager and the wireless radio. If the cell voltage sags below the BMS threshold under that combined load, the radio drops first — the scanner stays on but loses its connection to the host. A fully charged 5200mAh pack sustains that combined inrush better than a partially depleted or degraded original cell. If dropouts occur, check cell voltage at rest — it should sit at or above 3.6V between bursts. Anything below 3.5V at rest points to a cell that needs replacement, not a firmware or radio issue.