A bidirectional current (BidC) [1] is one which both charges and discharges at once.
It is a current that flows primarily in one direction and then in the other.
[2] Complicated systems which have integrated recharging capability sometimes resort to using bidirectional currents, as in Laptops or other systems.
Monitoring of a bidirectional current is required for a laptop to report the battery level and charging status.
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