User's Manual

Table Of Contents
1 About the Trimble Juno T41 handheld
Powering the handheld
The Juno T41 handheld contains a rechargeable Lithium-ion polymer battery.
Note – Charge the battery completely before using the handheld for the first time. If the battery has been
stored for longer than six months, charge it before use. Trimble recommends charging the battery for four
hours connected to a wall charger to recharge it fully.
Note – Cold temperatures, or using Bluetooth wireless technology, Wi-Fi, or the cellular modem consume
additional battery power and so shortens battery life between charges.
Charging the battery
CAUTION - The battery is designed to stop operating at or above 149 °F (65 °C). If this status icon appears,
the battery has overheated to 140 °F (60 °C) or more.
If the battery temperature exceeds 158 °F (70 °C), the battery will be disabled and the device must be sent to an
Authorized Service Provider to have it replaced.
Operating Temperature Range: -22 °F to 140 °F (-30 °C to 60 °C).
Storage Temperature Range: -40 °F to 158 °F (-40 °C to 70 °C). Do not exceed the specified storage temperature.
1. Connect the AC power adaptor cable to the power socket on the handheld:
a. Loosen the thumbscrews on the AC power adaptor cable.
b. Snap the connection on the cable into place on the handheld's power socket, until it holds
in place. Tighten the thumbscrews.
2. Connect the USBend of the power cable to the AC charger.
3. Connect the adaptor to main power. An international adaptor kit is provided with the
handheld.
4. Check that the Charge / Notification LED on the handheld is solid amber, indicating that the
handheld is properly connected to the power source and the battery is charging.
Fully charging the battery from empty takes approximately four hours when connected to a wall
charger. Trimble recommends charging with the wall charger for the most efficient charging.
The Charge / Notification LED on the handheld indicates the battery power or charging status, and
operating system notifications, as shown below:
LEDState Handheld / battery state
Solid amber Battery is charging.
Flashing amber Battery is charging, operating system notification; or, operating
system notification, battery is not charging.
Solid red Low battery charge.
Trimble Juno T41 User Guide 19