posted 10 months ago
Bert,
Thomas is absolutely correct. If your batteries are topped, connected to the solar panels and you are drawing less energy than the panels are producing then there is essentially no effect on your batteries.
It is worth noting that the 2000 cycle life is typically as a charge from 20% to 80% full. If you are doing charges that are less than that then the effect on the battery is less that the standardized full charge, though the effect may not be perfectly linear. The reality is that 2000 cycles is a LOT of cycles (about 5.5 years assuming one standardized cycle per day) and even then, that does not mean that the batteries are non-functional, but rather do not achieve the full charge like they did so when new. I believe that at the end of the 2000 standardized cycles, the batteries will still charge to about 80% full. All of this assumes that these are Lithium Iron Phosphate batteries which is an increasingly common battery chemistry in these types of units.
Hope this helps,
Eric
Some places need to be wild