II METHODOLOGY
The solar charge controller performance differs with respect to its
methodology adopted in implementation.
I. Linear Charge Controller: A linear charge controller is a charge controller
that just senses the voltage from the solar panel and gives
it to the battery. A linear charge controller does not regulate the
voltage or current. It does not perform buck and boost operation.
Whatever the voltage obtained from the panel is directly given to
the dc load. The major drawback of this linear controller is that, it
will not do any conversion operation (buck or boost the voltage)
due to this there will be losses around and the efficiency drops,
also battery life gets reduced and the average efficiency achieved
is around 80% to 85%. The fig.1 shows the system layout of linear
charge controller[1].