I am installing solar panels
on our catamaran
to power the refrigerator
so the wife can make ice and to keep the batteries topped off when away from the boat. With four 130 watt Kyocera panels
, we may no longer need to run the auxiliary generator
except to power the air conditioning
to keep the wife cool while drinking her iced beverages.
One of the features of the Outback MX 60 MPPT
controller I have installed is the ability to program the ABSORB (bulk) VOLTS and FLOAT VOLTS setpoints. Default values in that device for a 12V system are 14.4V and 13.6V respectively. The installation
manual strongly recommends setting it to the battery
manufacturer's specifications. Unfortunately, the battery charging
curves did not come with the boat.
Does anyone know how to obtain such curves (or at least the absorb and float volt values) for Hoppeker model 8 640 5, 140 Amp-Hr(C5) batteries? They are 3 years old but a recent load test showed that they are still in good shape so replacing them now is not economical.
BTW, when I do finally obtain the correct values, I plan to verify the settings in the other two charging
sources: Mastervolt regulator
on the stbd propulsion engine
and Victron 2000 inverter/charger. Hopefully that will keep me from having the same experience CSY
Man described in his recent thread, "AC charger
smarter . . . ."