Charging GC2 with Rogue MPPT Solar
Charging a pair of USB2000 golf carts with the Rogue MPPT 3048. US battery says the absorb voltage should be 14.7V (for 2 GC2 in series) held for 2-3 hrs, with charge terminated by max time or when...
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Almot wrote:brulaz wrote:
When in storage I set the float voltage to 13.1V as recommended by US Battery. But then the Rogue waits until the battery voltage drops to 0.5V less (or 12.6V) before going into MPPT mode.
I didn't notice this to happen, and I don't think this is supposed to happen with any controller in the way you describe it.
That is exactly how it works. But you don't look at your meter so maybe you wouldn't notice.;) In Absorb it only takes a .2 volt drop below set point to revert to MPPT. Setting the float voltage higher as the OP did makes it harder to maintain that voltage in float if there is much of any load. The controller will revert to MPPT more easily or quicker.
I "think" that Rogue, same as any other MPPT controller, will also run MPPT when, while being in Float, you suddenly turn some high load on. So high that the panel can't supply enough current to maintain Float.
This is correct.
