About this replacement
KERN MPC / MCC / MBC / MPD Series — 7.2V Ni-MH Replacement Battery (MBC-A08)
This is a 7.2V 2000mAh Ni-MH battery for KERN MPC, MCC, MBC, and MPD series portable electronic scales. It replaces OEM part numbers MBC-A08 and 137539. KERN scales run on mains power by default — this battery allows the unit to operate untethered during field weighing, transport, or wherever a socket isn't available.
- MPC, MCC, MBC, MPD platform compatibility: These KERN scale series share a common battery bay format and 7.2V supply rail. The BMS handshake and connector type are consistent across the group, which is why a single battery covers all listed variants.
- Bench tested on actual hardware: We cycled this battery through charge and discharge on KERN-compatible test equipment. The BMS held voltage within spec across the full discharge curve, and the charge termination triggered cleanly without overrun.
- Load cell warm-up after power cycle: After fitting this battery and powering the scale on, wait 30 seconds before placing any weight on the pan. The load cell amplifier requires the 7.2V supply to stabilise before it outputs accurate readings — this applies every time the scale is cold-started from a battery swap or full power-off.
Scales showing an error code or "E" display after battery swap
An error or "E" on the display immediately after a battery change is almost always a zero-calibration fault, not a battery fault. When the scale loses power during a swap, the internal reference zero can shift. Hold the tare button for three to five seconds with nothing on the pan — most KERN MPC and MCC units will re-zero and clear the error code. If the display still shows an error, power the unit off completely, wait ten seconds, and power back on before repeating the tare hold.
Battery draining faster than expected in frequent-use environments
Backlit displays and any active wireless data transmission draw significantly more current than the basic weighing circuit alone. On KERN scales with backlight set to "always on," the additional draw can reduce usable charge noticeably compared to backlight-off operation. Set the backlight to auto-off in the scale's menu — typically a 10-second timeout — to recover capacity. If the battery still depletes within a short shift, check whether the scale is completing a full charge cycle: Ni-MH cells need to reach a proper charge termination point, which requires roughly 14.4Wh input at 7.2V.