Getting from 110/20A to 48V DC @ 65A

[john61ct]

Originally Posted by tanglewood

No, that would give you 20A of charging @48V (four 12V, 20A chargers operating series)

Of course brain fart, thanks. So 4x 50+A chargers / PSU needed, each contributing ~600W @ ~12

> The issue with running some chargers in series is that the outputs aren't isolated. As an example, many have the negative output tied to the chargers ground, which connects to the ground on the power cord. If you put two such chargers in series, you get a dead short.

Yes hence all the threads about how to mod one in order to safely use a series'd pair.

But apparently can't go past two without reliability issues.

A pair of 48V each at 1100-1200W would be ideal.

But talking to these guys about use in a mobile setting where no real earth / ground is available and things go quiet pretty quick.

But then with the RC aircraft crowd, they're very commonly quick-charging off EU2000i doubt they're pounding copper rods down to the water table 8-)