Can you charge NOCO GB40 while using it?

No, you cannot charge the NOCO GB40 while using it to jump-start a vehicle. The device operates on a separate charge and is designed to deliver power to the vehicle's battery only. When jump-starting, the power is directed toward starting the vehicle, and the internal battery is not recharging simultaneously. Users often find that they need to charge the GB40 after use, particularly if it has been used multiple times or for larger engines. Pro tip: Always check the battery level on the GB40 before heading out, especially for longer trips. However, if your jump starter is frequently low on charge, investing in a model that allows simultaneous charging and usage might better meet your needs.