AdirPro PS236B Barcode Scanner Compatible Battery 3.7V 6800mAh

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

This 3.7V Li-ion battery at 6800mAh (25.16Wh) replaces the original pack in the AdirPro PS236B handheld barcode scanner. It fits the PS236B directly, using the same OEM part number 441820900006. Voltage and cell chemistry match the original spec.

• PS236B platform fit: The PS236B uses a single-cell Li-ion pack at 3.7V nominal with a built-in BMS. The connector pinout and physical envelope on this replacement match the OEM pack, so the scanner's charge circuit and fuel gauge communicate with the new cell without reconfiguration.
• Bench tested on actual hardware: We cycled this pack through simulated scan-burst loads, monitoring BMS cutoff thresholds at both the high-draw trigger pulse and the sustained wireless polling draw. The BMS held stable across repeated trigger events without false low-voltage trips.
• First-shift preparation on the PS236B: After installing this pack, seat the scanner in its charging cradle and run a full charge cycle before starting a pick-and-pack shift. The scan trigger inrush current is highest when the cell sits near minimum voltage — a fully charged cell on day one prevents false BMS trips during the first burst sequence.

Cradle showing a charging error on the new pack

Charging docks on the PS236B series read pack state through the contact pads on the battery face. If the dock throws an error immediately after seating the new pack, the cause is almost always contact resistance — either residue on the dock pins or the pack not fully seated. Wipe the gold contacts on both the battery and the dock with a dry cloth, then press the pack firmly until it clicks. If the error clears within 30 seconds, contact resistance was the issue. If the error persists, check that the dock is supplying the correct 5V input to its charge port.

Scanner losing wireless connection during rapid scan bursts

The PS236B draws from the same cell for both the imager and the wireless radio simultaneously. During a fast scan burst, the combined inrush from the trigger and the radio polling packet can pull the cell voltage below the BMS trip threshold for a fraction of a second — enough to reset the wireless stack. This shows up as the scanner dropping its Bluetooth or RF link mid-sequence rather than during idle. The fix is ensuring the pack is above 3.5V before starting high-frequency scanning; if dropouts continue on a charged pack, check that the dock contacts are clean and the cell is reaching full charge at 4.2V.