4G Systems XSBox GO+ Replacement Battery LB2600-01 3.7V 3400mAh

4G Systems XSBox GO+ — 3.7V Li-ion Replacement Battery (LB2600-01)

This 3.7V Li-ion battery carries 3400mAh (12.58Wh) and is a direct fit for the 4G Systems XSBox GO+ portable mobile hotspot. It replaces OEM part LB2600-01 when the original cell no longer holds a useful charge. The XSBox GO+ runs a combined cellular modem and Wi-Fi radio load — this battery is sized to meet that dual draw.

• XSBox GO+ fit: The LB2600-01 footprint is 65.00 × 42.60 × 11.76mm. The connector pinout and BMS voltage thresholds match the GO+ charge controller, so the device recognises the cell and reports charge level accurately.
• Bench tested on actual hardware: We ran this cell through full charge cycles while the hotspot was connected to six active client devices. The BMS held the low-voltage cutoff correctly and did not trip under the combined modem and radio load.
• Ventilation during extended sessions: Keep the XSBox GO+ in an open, ventilated spot — not a pocket or closed bag. When client devices are far from the hotspot, the cellular radio runs at maximum transmit power, which raises internal temperature and accelerates cell wear over time.

Voltage sag when the XSBox GO+ is at maximum client connections

The XSBox GO+ draws from two power-hungry subsystems simultaneously — the cellular modem and the Wi-Fi radio. At maximum client connections, both run near peak current draw at the same time. An aged or partially degraded cell cannot sustain the voltage rail under this combined load, and the device either reboots or drops clients. A fresh 3400mAh cell at 3.7V nominal restores the headroom needed to handle peak load without the voltage rail collapsing.

XSBox GO+ won't power on after sitting unused for several weeks

Li-ion cells self-discharge slowly during storage. If the GO+ sat unused long enough, the cell voltage may have dropped below the minimum boot threshold — typically around 3.0V for this class of device. The charge controller will not start a charge cycle if the cell is too far below that floor. Connect the hotspot to a charger and leave it for at least 20–30 minutes before attempting to power on; if the indicator light never appears, the cell has dropped below recovery voltage and needs replacing.