Solar help... Mppt or PWM
Hi.. I recently got a new solar panel from somewhere... fell off truck... lol I know mppt is the way to go im mysituation but am asking for advice... panel 250 watts volts 30v. Wh...
Forum Discussion
I previously used 250/14.8 for the amps and someone suggested the actual battery spec should be used. Agree and I was just trying to point out that 250/12.0 can be misleading.
A quick battery charging scenario for a discharged battery: The charger raises the voltage to 14.8V (for example) (it may ramp up) as holds it there for bulk charging at bulk amps. Absorption starts when the battery amps begin to taper down and the charger maintains 14.8V. As the battery nears full charge the charger lowers the voltage to 13.6V (for example) and enters float mode.
Timed absorption seems to be common with solar controllers so it's good (or ideal) to have adjustable time. It might be appropriate to change the time between storage and camping for example but that likely tends to be done by someone more involved with solar.
A quick battery charging scenario for a discharged battery: The charger raises the voltage to 14.8V (for example) (it may ramp up) as holds it there for bulk charging at bulk amps. Absorption starts when the battery amps begin to taper down and the charger maintains 14.8V. As the battery nears full charge the charger lowers the voltage to 13.6V (for example) and enters float mode.
Timed absorption seems to be common with solar controllers so it's good (or ideal) to have adjustable time. It might be appropriate to change the time between storage and camping for example but that likely tends to be done by someone more involved with solar.
