Power and battery issues

Battery( internal or user-replaceable) will not charge

The battery is overheated, or too cold.

The battery will charge between 0 °C and +40 °C (+32 °F and +104 °F). If you have been using or storing the battery and/or device in a particularly hot or cold environment, the battery may be outside the safe charging temperature range. Sensors in the battery will prevent the battery from charging until its temperature returns to a normal level.

The optional user-replaceable battery is not installed correctly.

If the optional user-replaceable battery is not installed correctly in the device or the battery charger, it may not have a proper connection and will not charge.
The optional user-replaceable battery terminals are dirty or corroded.

If the terminals of the battery are dirty or corroded, it may not have a proper connection and will not charge.

The batteries do not have enough charge to power the device.

The internal batteries must be partially charged to boot the device, and the device must be between –20 °C and +60 °C (–4 °F and +140 °F) to boot up. Plug the charger into the device and leave on charge for 30 minutes then try to boot the device. If after you press the Power button you see a battery indicator on the screen with a red charge level and charger icon, the battery needs to continue charging before the device can turn on.

Check the optional user-removable battery charge level.

If the device will not power on with the internal batteries, check the optional user-removable battery charge level, if available. Remove from the device, and press-hold the charge indicator button on the battery. At least one charge LED must be lit up to indicate that a battery has enough power for the device to start on battery power. If no LEDs light up on a battery, swap the battery for a charged battery, or charge the battery using the battery charger accessory (see Charging the removable accessory battery pack separately from the TSC5 controller / Ranger 5 data collector) before reinserting it.
The optional user-replaceable battery is not installed correctly.

The device may not be receiving power from the battery if it is not installed properly. Remove the battery, then replace it correctly. Replace the battery bay door and tighten the 4 screws.

Make sure you are not accidentally pressing the Power key.

The Power key is located on the left side of the keyboard. Make sure that while gripping the device you are not accidentally pressing the Power key, which places the device into suspend mode.
The device may have run out of power.

If your device's battery charge level gets too low, the device will automatically power down to prevent loss of data. You must charge the internal batteries before it will turn on, or insert an optional user-removable battery. See Checking the battery charge levels and LED status for more information on batteries.

If you regularly run out of battery power while in the field, consider carrying a spare accessory battery pack with you.

If you already have a user-replaceable battery installed in the device, shut down the device then remove the battery from the device, and check the battery level by pressing-holding the battery level button on the battery. If the battery charge is too low, reinsert the battery into the device and attach the device to an external power source, swap the battery for a charged battery, or charge the battery using the battery charger accessory (see Charging the removable accessory battery pack separately from the TSC5 controller / Ranger 5 data collector), before reinserting it.