Carlson Rugged Tablet RT4, User Manual

Page: 20 / 66

20 | Page
Carlson RT4 User Manual
Power Management
Power
Management
The RT4 runs on battery power, using a rechargeable, Li-Ion battery pack. A
non-removable, internal battery pack is an option.
Charging the Battery Pack(s)
For instructions on how to insert and charge the removable battery
pack, refer to Chapter 1, Install the Battery Pack. For tablets that have
both a removable battery pack and an optional internal battery pack, the
intelligent internal battery charging circuit first charges the battery pack
with the least amount of energy. When this battery pack comes to the
same level as the other battery pack, then both battery packs are charged
at the same time until they are both fully charged.
Battery packs are charged most efficiently at room temperature (68°F or
20°C). They will not charge if it is too hot or too cold.
Battery Status and Management
To find out how much battery life you have left, tap on the battery icon at
the bottom of the desktop screen. The amount of charge left as a percent
and the status of each battery is shown. The cumulative amount of battery
life left for installed batteries and the approximate amount of time battery
power will last is also shown. The amount of time left varies depending on
what you are doing with the unit.
Battery Life
Battery life on a full charge can be 12 hours or more. This varies depending
on whether or not you also have an optional internal battery, the
applications used, backlight usage, and radio usage. The optional internal
battery adds 5-6 extra hours of battery life.
The shelf life for battery packs is about one year. The battery packs should
be recharged at least once per year. This prevents the battery packs from
discharging to a level that might damage the batteries. Battery packs
that are not recharged at least every year, could fail to work or may have
reduced capacity. Battery packs typically last 1,000 to 3,000 charging
cycles.