Why is my NOCO Boost GB40 charging slowly?

If your NOCO Boost GB40 is charging slowly, several factors could be contributing to this issue. First, check the power source you are using; if it’s a low-output USB adapter, it may not provide enough current to charge the device efficiently. Ideally, use the charger that came with the unit, as it is optimized for the best charging speed.

Additionally, if the battery has become heavily depleted, it may take longer to recharge. In cold conditions, charging can also slow down significantly due to the chemistry of the lithium battery.

For instance, if the device was left in a cold car overnight, the low temperature can affect charging speed.

**Pro Tip:** Always try to charge the GB40 at room temperature and with the appropriate charger for optimal results.

**Consideration:** If slow charging persists despite using the correct charger, it may indicate that the battery is aging and may need replacement.