I really like the new powerpro battery..
- Thread starter Will Prowse
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Hedges
I See Electromagnetic Fields!
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- Mar 28, 2020
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Aren't those numbers <max allowed Voc> / <max battery current> ?
Seems to me all are the same kW. 100A x 48V = 4800W. So most bang for the buck is "150/100: $517/15"
The higher voltage input needs a transistor able handle higher voltage. Current handling is the same, probably more transistors to get the resistance down. May be lower efficiency; likely is at least when input voltage is higher.
The higher Voc allows other PV series/parallel options, which also allows higher voltage reduced current through PV wires. Might save you money on copper, but $700 savings?
I get 600Voc with AC coupling to GT PV. Additional efficiency loss if converting to 48V for battery charging.
42OhmsPA
What's in a title?
Zwy
Emperor Of Solar
Again, the recent post about the member moving from EG4 6500EX's to using a 450/100 and saying (bragging) he was getting 15% more PV.But it isn't Blue?!
The 6500EX will max out at 3900W on each MPPT while the 450/100 can do over 4500W. I had a pair of 6500EX's and it always clipped to 3900W. 600W difference comes to 15%. It's just the 450/100 had 15% more capacity.
Zwy
Emperor Of Solar
$520/40=$13
Hedges
I See Electromagnetic Fields!
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"40A Battey Charger" "$513.59"
40A x 48V = 1920W.
$513.59/1920W = $267/kW
That's why I buy Sunny Boy GT PV inverters (new old stock where possible).
I like to pay $500 for a 5kW model. $100/kW (only processes PV DC to AC, my battery inverter separately converts AC to battery DC. Or, I use the AC directly, e.g. power air conditioner. Only what I don't use has to go to battery.)
OffGridForGood
Catch, make or grow everything you can.
My Bad,
Victron 250/100 is max 5.8kW
$613/5.8kW = $105.70/kW
Victron 250/100 is max 5.8kW
$613/5.8kW = $105.70/kW
42OhmsPA
What's in a title?
OffGridForGood
Catch, make or grow everything you can.
Looking up the specs for the EG4 MPPT 100-48, I see max 5500W output, ie 5.5kW
so the math is $399/5.5 = $72.55/kW unless I am missing something. (still the best deal per kW I have seen)
Brucey
Solar Wizard
They all have the same max 100A output, so 5400W at 54V. The 250/100 is a good balance bumping you up from three to five 40V panels per string. So going from say 900W to 1500W per, three strings for 4500W. The 450/100 you could do ten per string and 3000W, two strings and 6000W, light over panelling. At double the cost per kW on the SCC end.
tomy2
escape artist
Both SS and CURRENT CONNECTED told me that. Kinda glad they did, I bought a Ruixu battery rack instead. My back hurts enuff from moving 100lb. batteries, a 300lb. unit sounds deadly.
timselectric
If I can do it, you can do it.
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My solar panels are under 50lbs.
The next heaviest thing in my system is 27lbs.
This is on purpose, because I'm not getting any younger.
tomy2
escape artist
Last edited:
dougbert
Solar Addict
Rednecktek
Solar Wizard
These posts with victron paint always crack me up
Zwy
Emperor Of Solar
"Gadget Blue" no less - perfect name!These posts with victron paint always crack me up
OffGridForGood
Catch, make or grow everything you can.
If I can't afford Victon, Blue spray paint is a low cost option!
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