KERN 440 Electronic Scale Replacement Battery 9.6V 750mAh Ni-MH

KERN 440 / FCB Series — 9.6V Ni-MH Replacement Battery (FCB-A01)

This is a 9.6V 750mAh Ni-MH battery built to the FCB-A01 specification. It fits KERN 440 electronic scales used in laboratories, pharmacies, and industrial weighing applications. Capacity figure is taken directly from the product data — 750mAh at 7.2Wh.

• 440 and FCB series fit: These models share the same battery compartment footprint, connector pinout, and 9.6V supply rail. The load cell amplifier and display circuit both draw from that rail, so the voltage and physical dimensions must match exactly — this battery does both at 88.50 × 21.30 × 21.10mm.
• Bench tested on actual hardware: We cycled this battery through charge and discharge on a KERN 440 unit. The BMS held the Ni-MH charge curve correctly, and the scale's low-battery indicator triggered at the expected threshold without early cutoff.
• Load cell warm-up after installation: Power on the scale and wait 30 seconds before placing any load. The load cell amplifier needs time to stabilise at full operating voltage after a cold start — readings taken immediately after power-on can drift by several digits before the circuit settles.

KERN 440 showing E or error code after battery swap

An error code immediately after a battery change usually means the scale lost its zero reference when power was interrupted. The internal calibration memory is preserved, but the tare register resets on power loss. With the pan empty and the scale on a stable surface, hold the Tare button for three seconds to force a zero-point reset. The error should clear and the display should return to 0.00.

Weighing readings drifting in the first minute after power-on

This is a load cell amplifier behaviour, not a battery fault. The amplifier's internal reference voltage takes roughly 20–30 seconds to stabilise once the 9.6V rail comes up from a cold start. Readings taken during that window will creep — typically a few digits on the last decimal place. Let the scale sit powered on with an empty pan until the display holds steady, then tare and begin weighing. If drift continues past 60 seconds, check that the battery is delivering at least 8.5V under load.