Answer
Jan 27, 2026 - 05:52 AM
The NOCO Boost Plus GB40 jump starter is fully charged when the solid green light is illuminated, with no other lights on, while connected to the charger. Once you disconnect the NOCO Boost from the charger and turn it on, all four LED indicator lights—numbers 1 through 4—will light up, including the green one. This indicates a full charge on your NOCO jump starter. Always check the indicator lights to confirm your NOCO Boost Plus GB40 is ready for use before you need it.
High-Tech Battery Solutions Inc