Skip to main content
zerologszerologs
Error· MBB / BMS log file

Cell Voltage Low

One or more cells dropped below minimum voltage (<3.0V)

Battery/BMSSource: BMSLog file condition
Last updated: July 30, 2026

What it means

One or more cells dropped below minimum voltage (<3.0V)

ErrorIssue detected, may affect performance.

Likely causes

  • Pack deeply discharged
  • Weak or failing cell
  • High parasitic drain

What to do

  1. 1Charge immediately if possible
  2. 2If won't charge, dealer inspection required
  3. 3Check for accessories draining 12V system

Which bikes use this table

Recorded in the binary log rather than shown on the dash — every generation writes them.

Questions

What does "Cell Voltage Low" mean in a Zero log?

One or more cells dropped below minimum voltage (<3.0V). It is written by the BMS. It is classed as error: issue detected, may affect performance.

What should I do about it?

Charge immediately if possible. If won't charge, dealer inspection required. Check for accessories draining 12V system.

See when this actually happened on your bike

A dash code tells you the fault; the log tells you the pack temperature, the state of charge and the ten minutes leading up to it.

Upload a log

Community reference: ZeroManual wiki entry

The code and its name are transcribed from Zero's own owner manuals; the severity, category and troubleshooting notes are ours. For official diagnostics, consult an authorized Zero Motorcycles dealer.