Heat 1, MPPT 0--More on That
I have been noting that my 230w panel with MPPT is getting fewer amps to the battery lately in this hot weather, with the back of the panel at 51C according to the temp gun pointed at the white backin...
Forum Discussion
Bfl
Are you running a load when you get these numbers or is it charging only? I ask because I rarely charge while it's hot, only recovering from a a heavy load like running the microwave. When just charging, I rarely see the 16-17a I know the 245's are good for. Put a big load on the system and I get the max no matter what time of day and it will stay that way until the bank returns to float.
Now I know nothing of PWM but from what I've read you lose watts early on when the batteries voltage is low. I'd rather have the effect of heat after the batteries are in float at mid day than when I really needed full power in the morning when the batteries are low.
One way or another it is a compromise.
Are you running a load when you get these numbers or is it charging only? I ask because I rarely charge while it's hot, only recovering from a a heavy load like running the microwave. When just charging, I rarely see the 16-17a I know the 245's are good for. Put a big load on the system and I get the max no matter what time of day and it will stay that way until the bank returns to float.
Now I know nothing of PWM but from what I've read you lose watts early on when the batteries voltage is low. I'd rather have the effect of heat after the batteries are in float at mid day than when I really needed full power in the morning when the batteries are low.
One way or another it is a compromise.
