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Notes on an Extended Battery PackThis topic explains battery charging behavior when an extended battery pack (not supplied)
is attached to your VAIO computer in addition to the installed battery pack (the primary
battery pack).
With the extended battery pack attached, the battery packs charge in the following sequence.
(When the battery care function is disabled)
1. The primary battery pack charges to about 80% of its battery capacity, then the
extended battery pack starts charging.
2. The extended battery pack charges to about 80% of its battery capacity, then the
primary battery pack starts charging to 100%.
3. The extended battery pack starts charging to 100%.
The battery power of the primary battery pack will be used after the extended battery pack
runs out of power.
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