EasyPack Poliflex 750 Replacement Battery 3.7V 900mAh

EasyPack Poliflex 750 / EZPack XL — 3.7V Li-ion Replacement Battery (56446 702 099)

This 3.7V, 900mAh Li-ion cell replaces the original battery in the EasyPack Poliflex 750 and EZPack XL handheld barcode scanners. It matches the OEM voltage and physical dimensions (64.94 × 36.70 × 6.60 mm) so it seats correctly in the battery bay. Capacity figures come directly from product data — 900mAh / 3.33Wh.

• Poliflex 750 and EZPack XL platform: Both models run on the same 3.7V cell and share the same bay geometry, connector pinout, and BMS handshake protocol — one part number covers both units without any modification.
• Bench tested on actual hardware: We cycled this pack through scan-trigger inrush events and wireless polling loads. The BMS held charge termination correctly and did not trip false low-voltage cutoffs under combined draw.
• First-shift cradle protocol: After installing, seat the scanner in its charging cradle for a full charge cycle before pulling it for pick-and-pack work. Scan trigger inrush is highest when the cell sits near minimum state of charge — a fully charged cell prevents false BMS trips on the first shift.

Cradle showing a charging error on a new pack

Charging docks on the Poliflex 750 use contact resistance to verify a valid pack before enabling the charge circuit. If the gold contacts on the battery or dock have oxidation or dust from warehouse handling, the dock reads an open circuit and throws a charge error rather than starting the cycle. This is not a faulty battery — it is a contact issue. Wipe the battery contacts and dock contacts with a dry cloth, reseat the pack firmly, and confirm the charge indicator activates. If the error clears, the circuit is live and charging at the correct 4.2V termination voltage.

Scanner losing wireless connection during rapid scan bursts

During a fast scan sequence, the scanner draws current simultaneously from the imager or laser, the wireless radio, and the onboard processor. On a degraded original battery, that combined inrush pulls the cell voltage below the radio's minimum operating threshold for a fraction of a second — enough to drop the wireless link. A fresh 900mAh cell with lower internal resistance sustains voltage during the burst without that sag. If dropout persists after installing this pack, check that the battery contacts are fully seated and the cell voltage at rest reads above 3.6V before the shift begins.