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critical Kickass
Error Code Er4 - Red LED Solid : Battery voltage variance exceeds 2v after pulse current test. Battery not holding charge / wont charge.
Battery is defective and unable to maintain a steady charge level after testing.
? What Causes This
Severe sulfation, damaged plates, or excessive wear preventing stable voltage levels.
✓ How to Fix It
Check battery condition with ohmmeter; replace battery if necessary. Consult expert for in-depth diagnosis if unsure.
Source: page 23 of the official manual
From the manual
This error code appears in:
Kickass Kachg1222