Fixed absorption time: 1 hour
Tail current: 6 Amps
I thought / have learnt that the MPPT should only svitch from absorption to float before the 1 hour fixed absorption time if the charge current dropped below the tail current setting BECAUSE THE BATTERY IS ALMOST FULL, not because of a cloud/low in-Power to the MPPT
In other Words: I thought the effect of setting a tail current only "kicked in" due to battery conditions, not PV conditions
But yesterday I experienced something different:
The MPPT was i absorption, still charging With about 18 Amps into the battery. Suddenly the sun conditions got worse, so the charge current dropped below 6 Amps beacuse of that.
- Then the MPPT switched to float, even if the 1 hour fixed absorption time was not yet reached, and even if a full battery was not the reason for charge drop below 6 amps.
Is this normal? This is not how I thought it should be...