What do the flashing LED lights mean on RYOBI 18V Single Chargers?

Last update: 25/10/2023, 14:15

Applicable Models

RC18120, RC18150U, BCL1418IV, R18SK115, RBC1850CCLE, R18SK26, R18SK32, RC18115, RC18130

This LED guide applies to the above listed single-port charger models. For 18V Dual or 6 port chargers, see: What do the LED lights mean on RYOBI 18V Multi Chargers?

Charger LED Indicator Battery Pack Status Red LED Green LED Action
Charger LED indicator - power - without battery pack Power Without battery pack ON OFF Ready to charge battery pack
Charger LED inidcator - testing


Evaluate Hot battery pack Flashing OFF When battery pack reaches cooled temperature, charger begins fast charge mode.
Evaluate Cold battery pack Flashing OFF When battery pack reaches warmed temperature, charger begins fast charge mode. 
  Evaluate Deeply discharged Flashing OFF Charger pre-charges battery until normal voltage is reached, then begins fast charge mode.
Charge LED - defective


Defective Defective Flashing Flashing Battery pack or charger is defective.
• If defective, try to repeat the conditions a second time by removing and reinstalling the battery pack. If the LED status repeats a second time, try charging a different battery.
• If a different battery charges normally, it's likely an issue with the battery. 
• If a different battery also indicates "Defective," the charger may be defective.
Charge LED - Charging Charging Fast charging OFF Flashing -
Charge LED - Charged Full Charging complete OFF ON Battery ready to use.


If your battery isn't charging, see: Why isn't my RYOBI Battery charging?

If your battery is defective and it’s still within the warranty period, take it back to the retail store along with your receipt or proof of purchase for warranty assessment.

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