Dolphin 70e Replacement Battery 3.7V 1600mAh Li-ion

Dolphin 70e / 75e / 60s — 3.7V Li-ion Replacement Battery (70e-BTEC)

This 3.7V 1600mAh Li-ion battery replaces the OEM pack in the Dolphin 70e, 75e, and 60s handheld terminals. These are compact mobile computers used for barcode scanning in retail, warehousing, and logistics. It also cross-references OEM part numbers BAT-EXTENDED-01 and 60S-BATT-1.

• 70e, 75e, and 60s compatibility: All three models share the same battery bay dimensions, connector pinout, and BMS handshake protocol — that is why one cell covers the entire family. The 70e-BTEC form factor slots into each chassis without modification.
• Bench tested on actual hardware: We ran this pack through the 70e's BMS charge and discharge cycle. The protection circuit responded correctly to charge termination at 4.2V and engaged low-voltage cutoff at 3.0V with no false trips during simulated scan-trigger inrush events.
• First-shift preparation: After installing, place the scanner in its cradle for a full charge cycle before use. Scan-trigger inrush current spikes hardest when the cell is near minimum. A fully charged pack on the first shift prevents false BMS trips during pick-and-pack operations.

Cradle showing charging error on a new pack

Charging errors on a freshly installed battery are almost always a contact resistance problem, not a faulty cell. The Dolphin cradle reads pack voltage through the gold-plated dock contacts — any film of dust, skin oil, or warehouse residue pushes resistance high enough for the dock controller to flag an error. Wipe the four contacts on the battery face and the matching cradle pins with a dry lint-free cloth, then reseat the pack firmly. If the error clears, the cell is fine.

Scanner losing wireless connection during rapid scan bursts

The 70e runs its wireless radio and scan trigger simultaneously, and during fast scan sequences that combined draw can cause a brief voltage sag at the cell terminals. If the BMS reads voltage below its minimum threshold during the sag, it momentarily throttles output — the radio drops first because the imager gets priority. This is more likely when the battery is below 20% state of charge. Keep the pack above 3.6V during high-frequency scanning shifts to avoid the sag threshold.