ericmcgrandle
New member
- Joined
- Jul 28, 2019
- Posts
- 4
New to the forum so hopefully this is in the correct place.
I am having some problems with my deep cycle batteries on my RV. Here is some quick information about the system:
2 x 130AH Crown Lead acid, flooded batteries.
2 x 100 W Renogy Solar panels
Renogy Rover 30a mppt charge controller
Currently my batteries voltage's never stay at 12.7V, instead they will drop to about 12.5V with no load on them. To test this I charged them to 100% using 1 nights full charge with a 7.2a charger, and then 2 full days of solar charge with the batteries not connected to any load. I then disconnected all of the chargers and let the batteries sit over night, no load, no charging, and in the morning the batteries voltage was at 12.42 and 12.45. However, the SG reading was 1.275 for all of the cells.
I have tried to equalize the batteries but I do not have a big enough charger to reach the 15.5V recommended for equalization. As such I used the solar panels to push in 14.2-14.4V for about 8 hours.
Any thoughts on why the batteries won't hold a 12.7V charge?
Cheers
I am having some problems with my deep cycle batteries on my RV. Here is some quick information about the system:
2 x 130AH Crown Lead acid, flooded batteries.
2 x 100 W Renogy Solar panels
Renogy Rover 30a mppt charge controller
Currently my batteries voltage's never stay at 12.7V, instead they will drop to about 12.5V with no load on them. To test this I charged them to 100% using 1 nights full charge with a 7.2a charger, and then 2 full days of solar charge with the batteries not connected to any load. I then disconnected all of the chargers and let the batteries sit over night, no load, no charging, and in the morning the batteries voltage was at 12.42 and 12.45. However, the SG reading was 1.275 for all of the cells.
I have tried to equalize the batteries but I do not have a big enough charger to reach the 15.5V recommended for equalization. As such I used the solar panels to push in 14.2-14.4V for about 8 hours.
Any thoughts on why the batteries won't hold a 12.7V charge?
Cheers