Charging your Evo

How do I recharge my Evo battery?

Charge the calculator by connecting to a computer or wall adapter using the USB-C cable that came with the calculator for at least 4 hours. If charging from your computer, ensure that your computer is not in sleep or hibernation mode and plugged into a wall outlet if using a laptop. If the calculator boots up check if the charge indicator displays a low charge, if it does let the calculator charge for a couple of hours.

About the wall charger:

If you are using a wall charger, make sure you are using a TI wall charger or other UL-certified USB charger rated for at least 1 amp (usually written as “1A” or “1000 mA”). To determine whether your charger is UL-certified, flip it over to the inside, and read the label. Look for the UL stamp and confirm that it states that it is 1000 mA or higher.

About the rechargeable battery:

You should also confirm the battery has not reached the end of its life. Usually, Li-on Polymer rechargeable batteries will last 3 years. If your rechargeable battery is at least 3 years old, it may be time to purchase a new TI Rechargeable Battery.

If it’s time to replace your battery, you can place an order for a TI Rechargeable Battery through the TI-Online Store at: https://epsstore.ti.com or by calling TI-Cares.

Note: TI Rechargeable Battery can only be shipped via Ground shipping. Express shipping is not available for orders containing a TI Rechargeable Battery.

Note: For operating system updates and data transfer, use the USB-C cable that came with the calculator or ensure that the cable supports data transfer.