Honeywell 99EX-BTES-1 Barcode Scanner Compatible Battery 3.7V 6800mAh

Honeywell Dolphin 99EX / 99GX — 3.7V Li-ion Replacement Battery (99EX-BTES-1)

This 3.7V 6800mAh Li-ion battery replaces the original pack in the Honeywell Dolphin 99EX, 99EXhc, 99GX, and 99EX-BTEC mobile computers. These are rugged handheld barcode scanners used in warehouse, retail, and logistics environments. Voltage and capacity match OEM spec — part numbers 99EX-BTES-1 and 99EX-BTEC-1 both confirmed compatible.

• Dolphin 99EX / 99GX platform fit: The 99EX, 99EXhc, 99GX, and 99EX-BTEC share the same battery bay geometry, connector pinout, and BMS handshake protocol — one pack covers all four variants without modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a Dolphin 99EX unit, confirming the BMS handshake cleared correctly, charge acceptance held through full capacity, and no protection trips occurred under combined radio and scan-trigger draw.
• First-shift preparation: After installing this pack, seat the scanner in its cradle and run a full charge cycle before starting pick-and-pack operations. Scan trigger inrush is highest when the cell is near minimum voltage — a fully charged cell prevents false BMS cutoff trips on the first shift.

Cradle charging error on a new pack

Dolphin docking cradles read battery state through four gold contact pads on the base of the pack. If those contacts pick up skin oil, dust, or warehouse grime during installation, the cradle firmware sees a high-resistance signal and throws a charge fault. This is not a battery defect — it is a contact resistance issue. Wipe the pack contacts and the cradle contact pins with a dry lint-free cloth, reseat the scanner firmly, and the charging indicator should clear within 30 seconds.

Scanner losing wireless connection during rapid scan bursts

During back-to-back barcode scans, the Dolphin 99EX draws current simultaneously from the imager, the wireless radio, and the CPU — a combined inrush that can briefly sag cell voltage below the radio module's minimum operating threshold. When that happens, the wireless stack drops and the device reconnects, which operators notice as scan-to-scan lag or dropped data packets. A cell with degraded capacity hits the sag threshold faster, so this symptom worsens as a battery ages. If a new pack shows the same behaviour, verify cell voltage at rest is above 3.6V before the shift begins.