As title I’m trying to charge my eb70 with 37v panels via a MPPT or buck converter, anyone done this?
Since the EB70 can only take voltages up to 28V.
You should never going with a higher voltage that the Powerstaions MPPT can handle!
It will completly destroy the MPPT once you use it. The only option to use a panel which has a much more voltage that the EB70 can handle is to use a step down module. It takes that 37V and converts it to 28V for example.
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Thanks. Yeah I’m aware I can’t connect them directly…which step-down converter though? Capable of handling the 37v (down to 28) and 16amps, perhaps with some over voltage protection on the output. I also read of someone using an external mppt but 
do not exceed 28v on EB70 if you are going to destroy it
Since the unit hasnt that big capacity i just would use the internal mppt.
There are thing like theese on amazon:
Where you can lower the output. But i dont would risk it.
I found this which fits the numbers i believe . . .
https://www.amazon.es/Convertidor-Regulador-Impermeable-Alimentación-Converter/dp/B0BD4PCDRM?th=1
I"m just a bit unsure if it’s risky using a cheap device like this between my solar array and the Bluetti for fear of sending too higher voltage through and blowing it . . .
Perhaps I could also wire in some overvoltage protection after the dc converter?