User Manual

9711-26020-0001
Export Controlled – See Page 3
Rev D
SECTION 8
ARMOR X10gx Tablet Computer
SECTION 9
BATTERY MANAGEMENT
Page 205 of 234
ARMOR X10gx Tablet Computer
What to Do for an Overly Discharged Battery). However, if the battery continues to discharge,
the internal battery circuits may permanently disable the battery for safety reasons and you will
not be able to recover it.
Avoiding Overly Discharging Your Batteries
The following suggestions will help avoid an overly discharged condition.
• Do not store the X10gx for long periods with the batteries installed. Even when the unit is
powered off, the tablet still draws a small amount of power from the batteries.
• Do not store X10gx batteries in a fully depleted condition for long periods of time. The
X10gx batteries will further self-discharge over time at a rate of about 10% a month or
3% every 10 days. The batteries should be recharged to 40% of full charge every 3-4
months of storage.
Battery Capacity and Charge
A battery’s “capacity” is it’s ability to deliver a specified amount of energy in the form of electrical
current to the system over a one-hour period, measured in milliamps per hour or mAh. A
battery’s “charge” is the percentage of this capacity that has been restored to the battery. A fully
charged battery is one that can supply 100% of its current maximum capacity. NOTE: The %
charge is based on the current maximum capacity, not the design capacity.
Maximum Capacity
The maximum capacity of a new battery is at or very close to its design capacity. However,
maximum capacity gradually decreases over time due to chemical aging, temperature extremes
and usage. Once a battery’s maximum capacity drops below 80% of its design capacity, it is
considered to be at the end of it’s life and is normally replaced. For example, a 2400 mAh
battery should be replaced when it’s maximum capacity drops below approximately 2399 mAh.
NOTE
While some batteries may still be usable below the minimum
capacity level (<80% of design capacity), the risk for battery failure
and/or unexpected shutdown increases dramatically.
Checking your Battery’s Capacity
You can check a battery’s design capacity, maximum capacity and remaining capacity (current
charge level in mAh) by opening ARMORutils and selecting the Battery Monitor option from
the Main window and then selecting either Battery 1 Details or Battery 2 Details (see
Battery
Monitor Dialog for a description of these windows).