Press the battery indicator button. It's the simplest way.
- Press the button on the ONE+ 18V Lithium+ battery. LEDs will light to show charge level.
- All lights on: Full or nearly full charge.
- Fewer lights: Partial charge. One flashing light: Very low, needs charging.
- No lights: Battery is completely depleted or faulty.
If that didn't work, the battery may need charging or could be defective.
- Place it on a compatible ONE+ charger. A charging light should activate.
- If no lights appear on the charger or battery after 30 minutes, try a different charger.
- If a different, known-good battery works in your drill, your original battery is likely dead.
Heads up: Register your tool within 30 days of purchase at ryobitools.eu to extend the European warranty to 3 years.