Panasonic CF-73 Series Reference Manual page 34

Battery Power
Battery Indicator
*1
Blinking orange
*1
When the AC adaptor is connected.
*2
Only for the main battery pack.
*3
In high temperature mode, the level that corresponds to an 80% charge for normal temperature
mode is displayed as [100%].
NOTE
This computer prevents overcharging of the battery by recharging only when the
remaining power is less than approx. 95% of capacity after the battery is fully charged.
Battery Status
Battery cannot be recharged temporarily because the internal
temperature of the battery pack is outside of the acceptable
temperature range for recharging. Once the allowable range
requirement is satisfied, charging begins automatically. Your
computer can be used normally in this state.
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