Pairing up the Eco-worthy 20a MPPT controller
Thanks to BFL confirming that the Eco-Worthy controller plays well when run with another controller, I felt pretty good about combining my two matched controllers. Each had one of the Bosch 245w mono ...
Forum Discussion
So a simple test if one of us gets the time to prove that the extra amps from the buck converter are always available even in float.
Have the 230w panel set up with the battery in float. Put a load on the system and slowly increase it but not so fast or high that it brings the batteries voltage below float and takes the charger into MPPT mode.
If the theory is correct, 230w/13.6v = 16.9a not accounting for loses and inefficiency. With the right load you could see 16a in float. I know I've seen over 13a in float and over 16a in bulk. If you can tweak the load to that point with out kicking the controller into bulk, it means that MPPT doesn't create extra amps at all, the converter does. MPPT just controls what volts and amps are needed to best charge the battery the fastest.
On low voltage systems there is still enough excess voltage to see some conversion at the converter and the program can then decide how to best use it in bulk.
Have the 230w panel set up with the battery in float. Put a load on the system and slowly increase it but not so fast or high that it brings the batteries voltage below float and takes the charger into MPPT mode.
If the theory is correct, 230w/13.6v = 16.9a not accounting for loses and inefficiency. With the right load you could see 16a in float. I know I've seen over 13a in float and over 16a in bulk. If you can tweak the load to that point with out kicking the controller into bulk, it means that MPPT doesn't create extra amps at all, the converter does. MPPT just controls what volts and amps are needed to best charge the battery the fastest.
On low voltage systems there is still enough excess voltage to see some conversion at the converter and the program can then decide how to best use it in bulk.
