Getac PS236 Replacement Battery 3.7V 6800mAh

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

This 3.7V, 6800mAh lithium-ion battery replaces the OEM pack in the Getac PS236, PS236C, and PS336 handheld barcode scanners. These rugged mobile data collection devices are common in warehouse, logistics, and retail environments where multi-shift scanning is the norm. Swap this pack directly into any of those three models — the OEM part number 441820900006 is shared across the series.

• PS236, PS236C, and PS336 compatibility: All three models share the same battery bay dimensions, connector pinout, and BMS handshake protocol. Getac standardised the cell format across this scanner generation, so one pack covers the full platform without modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the PS236, monitoring BMS communication with the host device. The protection circuit responded correctly to charge termination, over-discharge cutoff, and thermal thresholds — no BMS fault codes triggered.
• First-shift prep for pick-and-pack operations: After installing this pack, seat the scanner in its charging cradle and run a full charge cycle before the first scan burst. Scan trigger inrush current spikes hardest when the cell is near minimum voltage. A fully charged cell on the first shift prevents the BMS from tripping on that initial load surge.

Cradle showing a charging error on a new pack

Getac charging cradles use contact resistance to verify pack seating before starting a charge cycle. If the cradle throws an error with a new battery, the dock contacts or pack contacts are the first place to check — not the battery itself. Wipe the gold contacts on both the pack and the cradle with a dry cloth, then reseat the scanner firmly until it clicks. If the error clears, the connection was the issue. If it persists, check that the cradle firmware supports the 441820900006 pack by reviewing the cradle's compatibility notes from Getac.

Scanner losing wireless connection during rapid scan bursts

During fast scan sequences, the PS236 draws simultaneously from the imager, the wireless radio, and the processor — combined inrush can cause brief voltage sag on a degraded or low cell. When the radio drops below its minimum operating voltage mid-burst, the wireless stack resets, and the connection drops. This is not a software fault — it is a cell-level voltage sag issue. Check the pack's charge level before a high-volume shift; keep it above 50% if wireless dropouts have been occurring.