Benning IT 200 Replacement Battery 7.4V 10400mAh

Benning IT 200 — 7.4V Li-ion Replacement Battery (044170)

This is a 7.4V 10400mAh lithium-ion replacement battery for the Benning IT 200 insulation tester. It fits the IT 200 directly using OEM part number 044170. The IT 200 is a handheld insulation resistance tester used by electricians and technicians for field diagnostics and safety inspections.

• IT 200 platform fit: The IT 200 runs a 7.4V dual-cell Li-ion configuration with a BMS that handshakes on pack insertion. This replacement carries the same voltage rail and connector geometry, so the instrument recognises the pack without error flags on boot.
• Bench tested on actual hardware: We cycled this pack through the IT 200's measurement modes, including sustained high-voltage insulation tests. The BMS held stable through the probe initialisation current spike and did not trip during continuous test sequences.
• Post-install calibration on the IT 200: After fitting this battery, run a full calibration cycle through the IT 200's instrument menu before going to site. The tester maps battery state during calibration — skip this step and the low-battery indicator will fire early on your first measurement session, even with a full pack.

BMS lockout on the IT 200 after the pack sat unused in a carry case

Li-ion cells self-discharge slowly in storage. If the IT 200 sits unused for several months, the pack voltage can drop below the BMS recovery threshold — typically around 2.5V per cell. At that point the BMS enters a protection lockout and the instrument shows no signs of life even when placed on charge. To recover, connect the charger and leave it for at least 30–60 minutes before attempting to power on. Most BMS circuits will re-initialise once the cells climb back above 3.0V per cell and normal charge resumes.

IT 200 readings drifting or resetting mid-logging session

Sustained insulation resistance tests draw consistent current from the pack over extended periods. If the original battery has degraded, internal resistance rises and voltage sags under that load — enough to cause the instrument's processor to reset or log corrupt readings without fully powering off. This replacement pack's higher capacity at 10400mAh maintains a flatter discharge curve under sustained draw. If drift continues after fitting a fresh pack, check that the battery contacts on the instrument are clean and making full contact — a partial connection introduces resistance that mimics a weak cell.