Kenwood Grati FG155 Replacement Battery 3.6V 2000mAh

Kenwood Grati FG155 — 3.6V Ni-MH Replacement Battery (BF11957)

This is a 3.6V 2000mAh Ni-MH replacement battery for the Kenwood Grati FG155 cordless food processor. It slots into the FG155 housing and restores wireless operation for blending, chopping, and food processing tasks. Capacity matches the original BF11957 specification at 7.2Wh.

• FG155 platform fit: The Grati FG155 uses a single-cell Ni-MH pack running a 3.6V motor rail. This replacement matches that voltage, physical footprint (88.50 × 47.60 × 23.00mm), and connector orientation so the BMS handshake completes on first charge.
• Bench tested on actual hardware: We cycled this pack through repeated blending loads and confirmed the BMS holds charge cutoff correctly at full capacity without triggering premature protection trips under normal food processing current draw.
• Contact drying after kitchen use: Dry the charging contacts with a cloth before reconnecting to the charger after use near steam or running water — moisture on the contacts can trigger a BMS protection fault that blocks charging until the contacts are fully dry.

Why the FG155 motor slows or stalls mid-chop

Thick mixtures — dense vegetables, hard cheese, stiff dough — pull significantly more current from the pack than light chopping does. A Ni-MH cell under that elevated load sees a voltage sag that can drop below the motor's minimum operating threshold. On an aged or partially degraded pack, this sag hits earlier and harder, causing the motor to slow noticeably or cut out mid-cycle. A fresh pack with full internal resistance figures sustains the voltage rail long enough to complete the cut.

FG155 shows no charge indicator after kitchen use

If the appliance is used near steam or rinsed close to the charging port, moisture can bridge the charging contacts and trigger the BMS protection circuit. The charger then sees a fault condition and refuses to initiate a charge cycle — the indicator stays off entirely. Remove the unit from the charger, dry the contacts thoroughly with a dry cloth, and leave for 10–15 minutes before reconnecting. If charging resumes, the pack voltage should read at or above 3.6V within the first few minutes of charge.