Shimpo FG-7000 Replacement Battery 3.6V 700mAh Ni-MH

Shimpo FG-7000 Series — 3.6V Ni-MH Replacement Battery (FG-7BAT)

This is a 3.6V Ni-MH 700mAh replacement battery for the Shimpo FG-7000 digital force gauge. It fits the FG-7000, FG-7000L, and FG-7000T variants. The FG-7BAT part number matches the original cell footprint — 46.10 x 31.90 x 10.50mm — so it seats correctly in the battery compartment without modification.

• FG-7000, FG-7000L, FG-7000T compatibility: All three models run the same 3.6V power rail and share the FG-7BAT form factor. The cell dimensions and connector orientation are identical across the series, so one part number covers all three without adapter or wiring changes.
• Bench tested on actual hardware: We cycled this pack through the FG-7000's charge circuit and confirmed the BMS accepted the cell without flagging a fault. Charge termination triggered correctly at full cell voltage, and the gauge display responded normally through measurement cycles.
• Post-install calibration step: After fitting a new cell, run a full calibration cycle from the FG-7000's menu before taking measurements. The instrument maps battery state during that sequence. Skip it and the low-battery indicator will trigger early on the first real measurement session — even with a fully charged pack.

FG-7000 shutting down mid-measurement with the battery showing charged

Ni-MH cells at end of life lose the ability to hold voltage under load, even when the resting voltage reads normal. The FG-7000 draws a brief current spike each time it fires a measurement cycle. An aged or partially discharged cell can't sustain that load — voltage drops below the cutoff threshold and the gauge shuts off. The pack in that state will recover to a resting voltage that looks acceptable, which is why the display shows "charged" moments before the shutdown. Replacing the cell resolves this; the symptom does not appear with a fresh Ni-MH pack at full charge.

FG-7BAT pack won't charge after the gauge sat unused for months

Ni-MH cells that sit discharged for an extended period can drop below the voltage floor the FG-7000's charge circuit requires to initiate a charge cycle. The charger sees a cell that looks like a fault or a missing pack and does nothing. To recover the cell, apply a low-current trickle from an external Ni-MH charger capable of sub-threshold recovery mode until the cell climbs above approximately 1.0V per cell — around 3.0V for this 3-cell pack. Once it crosses that threshold, reinstall it in the gauge and the onboard charger should take over and complete the cycle normally.