KERN ECB Replacement Battery 9.6V 1800mAh Ni-MH

KERN ECB / ECE / FKB-A Series — 9.6V Ni-MH Replacement Battery

This 9.6V, 1800mAh Ni-MH battery replaces the original rechargeable cell in KERN ECB, ECE, and FKB-A electronic scales. These portable laboratory and commercial weighing scales use this battery pack for cordless operation. Voltage and capacity match the original specification — no modification needed.

• ECB, ECE, and FKB-A compatibility: All three KERN models share the same 9.6V Ni-MH battery rail, connector format, and charge-management circuit. The pack seats and connects identically across the range — the charge controller in each scale expects the same voltage profile and cell count.
• Bench tested on actual hardware: We ran this pack through the KERN charge cycle and monitored the charge controller's termination behaviour. The BMS accepted the full charge sequence and terminated correctly at peak voltage — no false cutoff, no overcharge flag.
• Post-install warm-up on KERN scales: After fitting this battery and powering on, wait 30 seconds before placing any load on the pan. The load cell amplifier in these scales requires operating voltage to stabilise before it delivers accurate readings — skipping this step produces inconsistent results, not a fault with the battery.

Why KERN ECB scales show drifting readings in the first minutes after a battery swap

The ECB's load cell amplifier draws a stable reference voltage from the battery rail to set its zero baseline. Immediately after installing a fresh Ni-MH pack, the terminal voltage sits slightly above nominal as the cells settle. The amplifier reads that elevated voltage as part of its calibration window, which shifts the zero point fractionally. Allow the scale to sit powered on for 30 seconds, then press the tare button to re-zero before weighing — this resets the baseline at true operating voltage.

Scale showing an E error code directly after battery replacement

An E error on KERN ECB and ECE scales after a power cycle is almost always a zero-calibration fault, not a hardware failure. When the battery is removed, the scale loses its stored zero reference entirely. Reinserting a battery and powering on without an empty pan, or with residual weight on the platform, triggers the error. Clear it by removing all weight from the pan, powering off, powering back on, and holding the tare button until the display reads 0.00.