AGM battery setpoints?
Now that I have this nice fully adjustable Rogue MPPT 3048 I suddenly realized that I don't know battery setpoints - Absorb V, Float V and Full I (charging current at SOC 100). Alright, current in...
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Almot wrote:smkettner wrote:
AFAIK the Rogue will hold voltage until amps drop to the set point then go to float.
Or if the current won't drop due to loads, it will go to float when timer expires.If something is turned on, the controller will provide the power to maintain the voltage. Voltage will only sag if the demand exceeds the solar energy available.
This is not clear to me. Rogue will revert to previous mode when it sags more than 0.5V. Otherwise it will remain in ABS until timer expires, and then will go to Float - but the current is high so it will go back to higher voltage of ABS (and will reset the timer as it does every time it enters ABS)? Or what? Need to ask Marc at the Rogue.
If controller is in float (13.5?) the controller will provide full amps available to maintain the float voltage. If it takes 1/4 amp to maintain float or if it takes 15 amps to maintain float that is what controller will provide. If you continue to draw 15 amps and have a cloud the controller may only provide 5 amps and voltage starts to sag. At some point the controller may switch back to abbsoption setpoint (14.5?) so that when load is reduced or clouds clear the voltage will increase to recharge the deficit.
