Chameleon RF FL3500 Compatible Battery 3.7V 3600mAh

Chameleon RF FL3500 / PB1900 / PB2100 — 3.7V Li-ion Replacement Battery (DT-5023BAT)

This 3.7V, 3600mAh lithium-ion battery replaces the OEM pack in the Chameleon RF FL3500, RF PB1900, and RF PB2100 handheld barcode scanners. It also cross-references part numbers DT-5024LBAT and CA50601-1000. These are mobile data collection devices used in warehouse picking, retail inventory, and logistics scanning.

• FL3500, PB1900, and PB2100 compatibility: All three models share the same 3.7V single-cell architecture, battery bay dimensions (57.40 × 36.67 × 24.15mm), and BMS handshake protocol — which is why one pack covers all three platforms without modification.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger and wireless polling loads. The BMS held stable voltage delivery across burst scan sequences and did not trip on the combined radio-plus-imager inrush draw.
• First-shift preparation: After installing this pack, seat the scanner in its cradle and run a full charge cycle before starting picking operations. The scan trigger draws highest inrush current when the cell is near minimum charge — a fully topped cell prevents false BMS trips during the first shift's initial burst.

Cradle showing a charging error on a new pack

Charging docks for the FL3500 series use contact pins rather than a recessed port, and those pins are sensitive to surface resistance. A new pack with oxidised or contaminated contacts will trigger a charging fault before any current flows. Wipe the gold contacts on the battery and the cradle with a dry lint-free cloth, then reseat firmly. If the error clears, the pack was fine — the dock just couldn't read it. Dock voltage at the pins should measure 4.2V DC when idle and no fault is active.

Scanner losing wireless connection during rapid scan bursts

The FL3500's radio and imager fire simultaneously during a fast scan sequence, creating a combined inrush spike that a degraded or low cell struggles to sustain. When cell voltage sags below the BMS's lower threshold during that spike, the BMS momentarily cuts output — the imager recovers first but the wireless stack drops and must re-associate. This shows up as random disconnects only during heavy scanning, not during idle. Charge the replacement pack fully before use and confirm resting cell voltage reads at least 3.7V before the first shift.