How do I check if the battery is low or fully charged?

You can check the DEV printer battery status by observing the indicator lights:

• Red Light ON → the printer is charging
• Red Light OFF → the battery is fully charged
• 5 blinking lights → the battery is low

If the printer shows 5 blinking lights, recharge it before printing to avoid interruption. The printer overview also lists 5x blink alert = low battery, which confirms the same battery warning behavior.

Battery Status Guide

• Charging = Red ON
• Fully charged = Red OFF
• Low battery = 5 blinks