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● Checked Nov 12, 2026From Greenworks support
Greenworks Optimow

Greenworks Optimow "Charging station fault (red LED flashing)": what it means and the fix

Steps2
ToolsNone
PartsNone

Works for Greenworks Optimow 25H and 50H (also Optimow 25 and 50).

Short answerRed light. On the charging station, not the mower.

What it means: A flashing red LED on the charging station means an electronic fault in the charging station or its power supply unit. Greenworks gives no home fix.

Quick fix: Contact your dealer or the Greenworks helpline at 1-855-345-3934.

Fix it in 2 steps

  1. Contact your dealer or the Greenworks helpline at 1-855-345-3934.
  2. Have your receipt and the product serial number ready.
Still showing Charging station fault (red LED flashing)?

Right away. Greenworks lists no owner fix for this light. Call 1-855-345-3934 or contact your dealer, with your receipt and serial number ready. Greenworks support →

Parts that fix this

Charging dockFor Greenworks Optimow on AmazonCheck price →Check the part fits your model. Affiliate links: we may earn a commission at no cost to you.

Why it happens

  • Electronic fault in the charging station
  • Fault in the power supply unit

Other Greenworks Optimow errors

Keeps happening? Compare before you replace

Sources

  1. Greenworks: Optimow 25H, 50H, 25 and 50 operator's manual, troubleshooting and indicator LEDs
  2. Greenworks: Optimow 25H and 50H robotic lawn mower manual (US, via Lowe's)
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Charging dock for Greenworks OptimowPart on AmazonCheck price →