How do I charge my calculator?

The NumWorks calculator comes with a USB-C cable. To charge your calculator, you can connect it to your computer or to an AC adapter.

Note that this is a standard USB-C cable. You can use any other USB-C cable to charge your calculator. Likewise, you can use a standard power adapter, such as the USB power ‘brick’ you use to charge your mobile phone. However, avoid using a fast-charging AC adapter.

If you have a model N0110 or earlier NumWorks calculator, it charges with a micro-USB cable and you can use any other micro-USB cable with this model.

How long to charge my calculator?

It takes 6 hours to fully charge the calculator. If your calculator doesn’t turn on after charging, see our dedicated support page.

What should I do if my calculator won’t turn on or charge?

If your calculator does not turn on:

1. Change the USB cable (standard USB-C cable) and USB port.
2. Wait an hour for charging.
3. Unplug your calculator.
4. Press the RESET button on the back of the device with a paper clip.

If that doesn’t work, your calculator is in most likely stuck in update mode. In that case, follow our recovery procedure.

What should I do if my calculator’s battery drains very quickly?

To find out if your calculator battery is discharging too quickly:

1. Make sure the calculator is not in exam mode.
2. Follow our recovery procedure.
3. Charge your calculator for 6 hours.
4. If your calculator loses battery in less than a day, try charging it with another cable.

If the previous four points have not helped you, your calculator most likely has a power issue. Email us at contact@numworks.com.