Forum Discussion
pianotuna
May 22, 2015Nomad III
Hi BFL13,
You need more wattage with a tiny bank because the depth of discharge is going to be greater. The extra wattage may carry the parasitic loads both earlier and later in the day, easing the strain on the (tiny) battery bank. That said, at about 85% state of charge there is not much point in having more than 150 watts per 100 amp-hours of bank, because the bank will only accept 12.5 amps per 100 amp-hours.
The exceptions are full time and inverter use. If there is lots of inverter use then it may be wise to max out the solar system.
You need more wattage with a tiny bank because the depth of discharge is going to be greater. The extra wattage may carry the parasitic loads both earlier and later in the day, easing the strain on the (tiny) battery bank. That said, at about 85% state of charge there is not much point in having more than 150 watts per 100 amp-hours of bank, because the bank will only accept 12.5 amps per 100 amp-hours.
The exceptions are full time and inverter use. If there is lots of inverter use then it may be wise to max out the solar system.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,340 PostsLatest Activity: Nov 27, 2025