Frequently Asked Questions

Q: What happens if you touch the clamps of GB40 together?

A: Nothing, it is perfectly safe and there will be no sparks. The entire NOCO Boost series has built in sensors that prevent power from being delivered, unless a battery is detected


Q: How long does it hold a charge?

A: It can hold 70% of its rated capacity for up to one year. For optimal performance, it is recommended to charge the device at least every 6-12 months, after initial charge.


Q: Can it recharge my branded smartphone?

A: Yes. It can recharge all generations of smartphones on the market, as well as HD action cameras, tablets, music players, wireless speakers and more.


Q: Does it have any limitations on car engine size for jump starting?

A: Yes. The NOCO GB40 unit is designed for gasoline engines 6L, and diesel engines up to 3L


Q: How long is the product warranty?

A: Its a one-year warranty


Q: How do you charge the NOCO GB40 unit?

A: The GB40 unit is charged via a micro-usb port on the input side of the unit. You can re-charge the unit through either an auxiallary port in a vehicle or with a USB style charger (cell phone charger).


Q: What type of batteries can I use this on?

A: It can be used on any 12-volt lead-acid battery, such as, Wet, Gel, Maintenance-Free, Enhanced Flooded Battery (EFB) and AGM. This unit is not designed to jump start lithium motorcycle or car batteries.