Hello,
Hère is my setup :
Smart Solar mppt 100 20
300w pannel
128 ah 12v li ion batterie
I did plug everything in ordre but the Charging keep staying low, like 4w in full Sun. Thé yellow absord led IS on.
Andy thoughts ?
asked
Low charging rate with mppt on lithium-ion batterie
Post a screenshot with the battery settings from the solar charger.
What kind of Li-Ion? LiFePO4 or something else?
yes sir. It IS a 12v li ion battery i think its 18650 cells inside.
The Absorption and Float Voltages seem very low.
Please check with your battery documentation to be sure these are correct.
You have low production because these target Voltages have been met, it seems.
Input voltage specs is 12.6v.
Also, is it normal that when i change batterie absorb voltage in thé specs, it changes thé "batterie voltage" instantly in thé main board ?
I also tried a 12v lead acid batterie ( 14,4 v absorb voltage ) but i have thé same results...
What do you think ?
If the Voltage displayed in the main panel jumps directly to the Voltage selected in the settings, then that is not normal. It should move up slowly depending upon the state of charge of the battery.
In this case these is most likely a bad connection between the MPPT and the battery. Please check all connections, fuses, fuse holders, circuit breakers and terminals.
Ok. You mean that thé regulator IS acting like no batterie IS connected ?
Yes, it is acting as if the battery is disconnected, or that there is some high resistance somewhere.
