Dassault 730 POS Terminal Replacement Battery 7.2V 1800mAh

Dassault 730 / 770 / Arthema / ELITE 730 — 7.2V Ni-MH Replacement Battery

This is a 7.2V, 1800mAh Ni-MH replacement battery for the Dassault 730, 770, Arthema, and ELITE 730 payment terminals, along with seven additional compatible models in the same family. It slots into portable POS terminals used in retail and hospitality where wireless payment processing runs off internal battery power. Capacity figure is 12.96Wh.

• 730 / 770 / Arthema / ELITE 730 family: These terminals share the same 7.2V battery architecture, connector pinout, and charge management circuit. One replacement cell covers the full range without hardware modification.
• Bench tested on actual hardware: We cycled this cell through the Dassault charge IC and confirmed the BMS handshake completes correctly. The protection circuit triggers as expected on overcurrent and low-voltage cutoff conditions.
• First transaction cycle after installation: After fitting the battery, run at least one complete transaction — including a receipt print — before deploying in a live environment. The terminal maps battery capacity during normal operation and needs one full power cycle to calibrate the charge indicator accurately.

Terminal rebooting mid-transaction after battery swap

The receipt printer motor draws a sharp current spike at the moment it fires — often 1.5–2x the steady-state load the terminal pulls during idle or card-read. On a new cell that hasn't completed a full charge cycle, the BMS can read this spike as an overcurrent event and trip. This is not a faulty battery. Run the terminal through a full charge, then complete one print cycle. After that, the BMS learns the load profile and stops tripping on normal printer draws.

Terminal not powering on after sitting unused in a drawer

Ni-MH cells self-discharge at roughly 1–3% per day without a load. A terminal left unused for several weeks can drop the cell below the BMS recovery threshold — typically around 5.4V for a 7.2V pack — at which point the protection circuit blocks charge input entirely. Place the terminal on its dock and hold the power button for 10–15 seconds. Some Dassault models use a trickle pre-charge routine to bring the cell back above threshold before enabling normal charge current. If the dock light remains unresponsive after 30 minutes, check dock voltage at the contacts — it should read between 8.4V and 9V.