Anyone else getting mixed results from Victron ONLINE MPPT calculator and their EXCEL Spreadsheet download?

[Chris O]

I bought a Victron MPPT SMART SOLAR MPPT 100/20 In using their online calculator and using their WEB tool, I could not come up with any panels that my local panel seller on FB Marketplace had that would work for 48V Batteries. Worked with 12v and 24v fine. So I pulled down their EXCEL Spreadsheet tool. Added the Solar panels that the Facebook guy had in stock, and low and behold there were multiple combinations that worked for 12v and 48v. Over paneled for 12V, but worked. When I used the ONLINE tool in CUSTOM MODULE mode - https://www.victronenergy.com/mppt-calculator It still couldn't come up with any 48V configurations that would give me a Victron Smartsolar 100/20 as the solution.

My inexperience says, the EXCEL calculator is doing it correctly (in series add the VoC 36.8v +36.8v is under 100v, and the MPPT just rejects any WATTS over the 1,160WATT maximum of the MPPT 100/20, but with these panels I would be under that limit with two parallel strings)

example
SCHUCO MPE 220 PS 09 in a 2 series 2 parallel strings the EXCEL calculator says is fine for MPPT 100/20 and 48V battery but Website calculator just gives NO Devices

SCHUCO STATS
Power Wp = 220W
Voc = 36.8V
Isc=8.12A
Vmpp = 29.7V
Impp = 7.28A

 

[Chris O]

It seems like the WEB Calculator doesn't like 48V for batteries. When I try to use a panel that CurrentConnected said should work, although not confident the name the Victron Tool has for the Rich Solar 200W as it doesn't show SPECs once you select the panel and the names are not always 100% matches. When I switch to 36V battery or lower a lot of configurations work.