LogrobotLM

LogrobotLM — AI fault diagnosis for ABB · KUKA · FANUC robots. It reads your robot backup in your browser (never uploaded) and pinpoints the fault. Try it free →

ABB Error 38213 — Battery charge low

Warning

ABB 38213 (“Battery charge low”): Battery charge low: the Serial Measurement Board battery will soon be depleted. Likely part: SMB battery (axis).

Updated 2026-10-22 · LogrobotLM reference

What it means

Battery charge low: the Serial Measurement Board battery will soon be depleted. Without action, the absolute position will be lost and a full recalibration (revolution counter update) will be required.

What to check

  • Replace the SMB battery at the first maintenance opportunity.
  • After replacement, check the revolution counters.
  • Check the condition of the connectors and that there is no corrosion on the SMB socket, a common cause of premature discharge.
  • Note: Warning level before 38200 / 38214 / 38215 (loss of SMB backup). Can be reported to the PLC via an "SMB battery low" system signal.

Part to check / replace

ABB 38213 points to the hardware below — start here before ordering.

Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.

Related codes

20032Revolution counter not updated20033Axis not synchronized38034Axis Computer / SMB / Serial measurement cable fault

Same hardware involved

38200SMB battery (axis)38214SMB battery (axis)38215SMB battery (axis)50441SMB battery (axis)

Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →