Fluke 8010 Replacement Battery 2.4V 2500mAh 474022

Fluke 8010 / 8050A Series — 2.4V Ni-MH Replacement Battery (474022)

This is a 2.4V 2500mAh Ni-MH rechargeable battery for the Fluke 8010, 8010A, 8010M, 8050A, and eight additional models in the same series. It matches OEM part numbers 474022, 8092-01, and 2261584. The pack slots directly into the battery compartment of these compact digital multimeters used for field electrical diagnostics.

• 8010 and 8050A series fit: These models share the same 2.4V battery rail, physical footprint, and connector orientation. Fluke standardised this pack across the line, so one replacement covers all listed meters without modification.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on bench instruments matching the 8010 series draw profile. The BMS held cutoff voltage correctly and the cells reached rated capacity within the first two cycles.
• Post-install calibration cycle: After fitting this pack, run a full calibration cycle through the instrument menu before field deployment. The meter maps battery state during calibration — skipping this step causes premature low-battery warnings on the first measurement session in the field.

BMS lockout after the 8010 sat unused in a carry case for months

Ni-MH cells self-discharge at roughly 1–2% per day at room temperature. After several months in a case, the pack voltage can drop below the BMS recovery threshold — typically around 1.8V total for a 2-cell 2.4V pack. When this happens, the charger or meter may not recognise the pack at all. Reconnect to the OEM charger and leave it for 30–60 minutes; most chargers apply a trickle pre-charge below 1.9V to recover the cells before switching to normal charge rate.

Meter shuts off mid-measurement during sustained probe load

Sustained current draw through the input circuitry — particularly during resistance or continuity measurements with the probe energising a circuit — causes a voltage sag across a degraded or partially charged pack. If the pack voltage dips below the meter's brownout threshold, the 8010 cuts power mid-reading rather than display corrupted data. This is not a meter fault. Charge the replacement pack fully, confirm the terminal voltage reads at or above 2.4V off-load before use, and repeat the measurement.