Originally Posted by Paul Elliott
If you use an MPPT
controller you will probably increase your charging current
by 10 or 15%. If you don't have an LED tricolor (or running lights) do consider it. This is can have a huge impact on your under-sail power budget
Spent the day reading about MPPT's.
I was suspicious at first about all the claims but as incredable as it first sounded they do increase the amount of energy going into the battery
for a fully discharged battery
it increases the current
for a battery at around 13-14 volts it adds 10-20% more amps.
It acts like a transformer, it converts the 17.4 volt output of the panel (5.02 amps)to a lower voltage 14 volts giving 6.0 amps.
Using a MPPT
controller means a 85 watt panel does not have to be down-rated to 65 watts.
Another way of looking at it is an array producing 20 amps of current now produces 24 or more amps!