Symbol PDT8100 DT-5023BAT Replacement Battery 3.7V 1800mAh

Symbol PDT8100 Series — 3.7V Li-ion Replacement Battery (DT-5023BAT)

This 3.7V, 1800mAh Li-ion cell replaces the original battery in the Symbol PDT8100, PDT8134, PDT8137, PDT8140, and over 40 additional PDT8100-series handheld barcode scanners. It matches OEM part numbers DT-5023BAT, DT-5024LBAT, CA50601-1000, and 21-58236-01. Physical dimensions are 57.23 × 37.00 × 12.68mm — confirm your pack matches before installing.

• PDT8100-series compatibility: The PDT8134, PDT8137, and PDT8140 share the same 3.7V battery bay, connector pinout, and BMS handshake protocol as the base PDT8100. One pack covers the full hardware family without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on the PDT8100 platform. The BMS accepted the cell without a protection-trip fault, charge termination completed normally, and the scanner powered up cleanly on all test units.
• First-shift preparation — PDT8100 cradle cycle: After installing, seat the scanner in its charging cradle and run a full charge cycle before the first pick-and-pack shift. The scan-trigger inrush current is highest when the cell sits near minimum state of charge — a fully charged cell prevents a false BMS cutoff on the first heavy burst of the day.

Cradle showing a charging error on a brand-new pack

A new Li-ion cell ships at partial state of charge — typically around 40–60%. Some PDT8100 cradles interpret the low initial voltage as a fault condition and display a charging error rather than beginning a normal charge cycle. The fix is almost always contact-related: the gold pogo pins on the cradle and the corresponding contacts on the battery pack accumulate oxidation and handling residue. Wipe both sets of contacts with a dry lint-free cloth, reseat the scanner firmly, and the cradle should transition to a normal charge state within 30 seconds.

Scanner dropping its wireless connection during a rapid scan burst

The PDT8100 draws current simultaneously from the laser or imager, the decode processor, and the 802.11b radio during a fast scan sequence. That combined inrush can pull cell voltage below the BMS low-voltage threshold for a fraction of a second, which forces the radio stack to reset and drop the access point association. This is more pronounced when the battery is below 30% charge. Keep the pack above that level during active picking shifts — charge the scanner in the cradle during any break longer than a few minutes to stay clear of the threshold.