What do the different lights mean on RYOBI 18V Multi Chargers?

This light guide applies to 18V ONE+ 6-Port Charger (model RC18640) and Ryobi 18V ONE+ Dual Port Charger (model RC18240):

	Battery Pack Status	Red LED	Green LED	Action
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.
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. If 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.
Charging	Fast charging	OFF	Flashing	Battery pack is being charged.
Charging	Taper charging	OFF	Fading	Battery pack is being charged at lower rate.
Full	Charging complete	OFF	ON	Battery ready to use.

This light guide applies to the Ryobi ONE+ 18V 6-Port Supercharger (model RC18627U):

Charger LED Indicator	LED Function	Battery Pack	Action
Red on	Battery In	Waiting	Battery is standing by awaiting it's turn to charge.
Red flashing	Testing	Deeply discharged	Charger pre-charges battery until normal voltage is reached, then begins charge mode.
Red fading	Defective	Defective	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, the initial battery is likely defective. If 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. If a different battery also indicates “Defective,” the charger may be defective. If 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.
Green flashing	Charging	Charging	Battery is charging.
Green on	Charged	Battery full	Charging is complete
Green fading	Energy Saver mode	Battery full / energy save mode	Battery pack is fully charged and charger is in Energy Save mode.
Orange flashing	Temperature Delay	Hot battery pack	When battery pack reaches a cooler temperature charging will begin.
Orange flashing	Temperature Delay	Cold battery pack	When battery pack reaches a warmer temperature charging will begin.

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

Applicable Models

RC18640, RC18240, RC18627U