Getac PS236 Barcode Scanner Replacement Battery 3.7V 5200mAh

Getac PS236 / PS336 Series — 3.7V Li-ion Replacement Battery (441820900006)

This 3.7V 5200mAh Li-ion battery replaces OEM part 441820900006 in the Getac PS236, PS236C, and PS336 rugged handheld barcode scanners. These scanners run in warehouses, logistics hubs, and retail stockrooms where the battery takes heavy daily cycling. Swap this pack in when the original cell no longer holds charge through a full shift.

• PS236, PS236C, and PS336 fit: All three models share the same battery bay dimensions, 3.7V nominal rail, and BMS handshake protocol — one pack covers the full series without pinout or firmware conflict.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the PS236 platform. The BMS negotiated correctly with the scanner's charge controller, and cell balancing kicked in at the expected voltage thresholds with no error flags.
• First-shift prep for pick-and-pack use: Place the scanner in its cradle for a complete charge cycle before the first shift. Scan trigger inrush current peaks when the cell is near minimum — a fully charged pack prevents false BMS trips the first time an operator pulls the trigger at high scan frequency.

Cradle charging error on a freshly installed pack

Charging docks on the PS236 series read pack state through a set of gold contact pins on the battery face. If those pins have oxidation or debris from handling, the dock sees high contact resistance and throws a charging error rather than starting the charge cycle. Wipe the battery contacts and the dock contacts with a dry cloth before reseating. If the error clears within one reconnect, contact resistance was the cause — not a faulty pack or dock. If the error persists after two clean reseats, check that the dock firmware recognises the 441820900006 cell ID.

Scanner stops reading barcodes mid-shift without low-battery warning

The PS236's imager and laser draw a spike of current each time the trigger is pulled. When cell voltage sags below the imager's minimum operating threshold under load, the scanner stops reading — even though the battery indicator still shows charge remaining. This happens most often during high-volume scan bursts with a partially depleted cell. Start the shift with a full charge, and if dropouts still occur, check that the cell is sitting above 3.5V resting voltage after a full cradle cycle.