Newland ME31 Compatible Battery 3.7V 2200mAh Li-ion

Newland ME31 / SP630 — 3.7V Li-ion Replacement Battery

This 3.7V 2200mAh (8.14Wh) lithium-ion battery replaces the original cell in the Newland ME31 and SP630 handheld payment terminals. It fits the standard battery bay on both devices and uses the same connector and contact configuration as the factory unit. Capacity figure comes from the product data, not a third-party estimate.

• ME31 and SP630 platform fit: Both terminals run on the same 3.7V single-cell architecture with the same bay dimensions and BMS contact layout. One battery covers both models without modification.
• Bench tested on actual hardware: We cycled this cell through the ME31's charge IC and confirmed the BMS handshake completed correctly. The protection circuit responded to overcurrent conditions from the integrated printer motor without tripping at normal load.
• First deployment tip: After fitting the battery, complete one full transaction cycle — including a printed receipt — before putting the terminal into live service. The ME31 maps cell capacity during normal operation and needs at least one complete power cycle to display the charge indicator accurately.

Payment terminal rebooting mid-transaction after battery swap

The ME31's receipt printer draws a sharp current spike the moment it fires — often 1.5A or more for a fraction of a second. On a new cell that hasn't completed an initial charge cycle, the BMS can read that spike as an overcurrent fault and cut the output rail, which restarts the terminal. This is a BMS calibration issue, not a faulty battery. Run the terminal through a full boot and a complete charge before processing live transactions, and the BMS learns the printer's normal load signature.

Terminal not powering on after sitting unused in storage

Li-ion cells self-discharge at roughly 1–2% per month at room temperature. A terminal stored for several months can drop below the 2.5V cell-recovery threshold the BMS uses to allow a restart. The BMS locks output to prevent damage to a deeply discharged cell. Connect the terminal to its original charger and leave it for 30–60 minutes without pressing the power button — most chargers apply a low-current pre-charge trickle below 3.0V. Once the cell recovers past 3.0V, the BMS re-enables output and the terminal boots normally.