Xantrex Technology SW Plus 4024 - Manual (Page 314)

Over-Charge Protection
E–2 976-0043-01-02
Overvoltage Protection using a Charge Controller
When using a renewable energy source to charge the batteries, a charge
controller prevents the batteries from exceeding a user-specified voltage
level. This preserves and extends the life of the battery by preventing the
damage caused by overcharging. The charge controller can also take over
the functions of bulk and equalize charging, and many charge controllers
provide the functions of multi-stage charging.
Figure E-1 Overvoltage using a C-Series Charge Controller