Have been using an old 20 amphour battery for awhile on this system and it finally stopped taking a charge, so, out it goes.
The only battery I have that could replace it is a used 7ah battery and it's just too small. I'm planning to start using a Lithium 18650 battery bank soon but won't have the parts here for about a month.
Ended up making a 90,000 mfd capacitor bank to use temporarily until I have the Lithium battery bank finished. This Solar Power System already has an additional 50,000 mfd capacitor bank inside the house on the Fused Distribution system. So there is about 140,000 mfd of capacitors total buffering the power. Isn't that .140 Farad?
Voltage control is still being accomplished by the Ghurd Dump Controller set to 14.4v that was working the original battery.
Of course Capacitors don't have any real storage capacity so there is a Voltage Maintainer on it that will keep the voltage from going below 11.1 vdc. This will keep things going without daylight.
This has been working for a full day now. It's a little bit weird but seems to be working good enough to to get the Lithium Bank built. My loads are LED lights driven by buck converters, plus an audio amp and some fans, nothing that would complain about fast voltage swings.
The Lithium bank will use 18650 batteries setup in a 14-21 volt system, then using a Buck Converter to reduce voltage to 12.5 volts for Distribution and Usage.
The Bank will start out as eight 18650 batteries in Parallel making about 10 amphours, then 5 in Series for the 21 volts, 5s 8p.