Softing NetXpert XG2 Replacement Battery 7.4V 6800mAh

Softing NetXpert XG2 — 7.4V Li-ion Replacement Battery (TXGBATX)

This 7.4V 6800mAh Li-ion pack replaces the original battery in the Softing NetXpert XG2 and T66006B portable network analyser. It matches the OEM voltage rail, connector, and BMS communication profile the instrument expects. Capacity is 6800mAh (50.32Wh) — taken from the product specification, not estimated.

• NetXpert XG2 and T66006B compatibility: Both units run the same 7.4V power architecture and share the TXGBATX connector pinout. The BMS handshake and protection circuit thresholds are identical across the two, so one pack covers both.
• Bench tested on actual hardware: We ran this pack through a full charge cycle and simulated the current spike that occurs when the XG2 powers its active probe modules at initialisation. The BMS held the rail without triggering overcurrent cutoff at that load step.
• Post-install calibration on the NetXpert XG2: After fitting the new pack, run a full calibration cycle from the instrument menu before field deployment. The XG2 maps battery state during that sequence — skipping it causes the low-battery indicator to fire prematurely during the first measurement session, which interrupts logging.

BMS lockout after the NetXpert XG2 sat unused in a carry case for months

Li-ion cells self-discharge over time. If the XG2 sat unused long enough, the pack can drop below the BMS recovery threshold — typically around 2.5V per cell. At that point the BMS enters a sleep state and the instrument shows no sign of life, even on charge. To recover the pack, connect the charger and leave it for at least 30–60 minutes before attempting to power on — most BMS circuits re-initialise once the cells clear 3.0V per cell. If the charger shows no activity at all after that window, the cells have likely dropped below the hard cutoff and the pack needs replacing.

Readings resetting or dropping out mid-logging session on the XG2

This is a voltage-sag issue, not a capacity issue. Under sustained sensor load during an active logging run, the pack voltage can dip enough to trigger the instrument's low-voltage protection, causing a momentary reset rather than a clean shutdown. It happens most often when the XG2 is running active network analysis with display backlight at full brightness simultaneously. Check the battery percentage immediately after a reset — if it recovers to above 40% within seconds, the cell is sagging under load rather than genuinely depleted. Reducing backlight brightness or closing background test processes reduces the sustained draw and keeps the rail stable above 7.0V.