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Strange post and it is not even a full moon........ Another group I follow went in the toilet this week. Attacked by four or five most likely one that is trying to bust it up.... Doing a great job of it.....You Administrators do a remarkable job with this group. We have had our issues but pretty dog gone good info at the grass roots level.

Note: All calculations assume only a 50% discharge to your batteries to optimize battery life.

Current BoostUnder most conditions, TrakStar TM MPPT technology will “boost” the solar charge current. Forexample, a system may have 36 Amps of solar current flowing into the TS-MPPT and 44 Ampsof charge current flowing out to the battery. The TriStar MPPT 150V does not create current!Rest assured that the power into the TriStar MPPT 150V is the same as the power out of theTriStar MPPT 150V. Since power is the product of voltage and current (Volts x Amps), the follow-ing is true*:(1) Power Into the TriStar MPPT 150V = Power Out of the TriStar MPPT 150V(2) Volts In x Amps In = Volts Out x Amps Out* assuming 100% efficiency. Losses in wiring and conversion exist

Question: To recover 140AH in a battery bank am I right in assuming:1. 2. 3.

Watts 310 Cells 72 Panel Vmp 35.80 Panel Imp 8.68 Panel Voc 45.42 Panel Isc 8.99

What is 'c/10'? Capacity of battery bank divided by 10?

If the Flexmax 80 can only take up to 145vdc input then I can make the array a series parallel system with two panels in series parallel to two more panels in series giving me ~72vdc input. Which will be fine with 10awg cables from 50 feet away.

Off-grid throws away 30% or more of your solar power in charging/discharging losses as shown to the right. Further, battery systems throw away another 50% of your annual incoming solar power because the battery can't save the excess power in summer for use in the winter when you need it .

Point being? In many of the cases here 'off-grid' means we're too far from any grid to even consider grid tie systems...we're off the grid in more ways than just a cable