The constant voltage supplies do not work in parallel very well, as even a small voltage difference would send current between the supplies.
You would be better off putting the whole 350ma grid charger in parallel with a second 350 ma grid charger, so the CC supplies ability to adjust output voltage would tune the voltage of each so they would work nicely in parallel to put out 700ma.
Tune the open circuit voltage of each supply to about the same voltage, put the two series strings in parallel and you are good to go. Those supplies sound like a good deal for a 350ma supply. Unfortunately my dual rate charger needs a bigger 48V supply, and like I explained above, putting them in parallel without a CC supply to do the balancing on each string is not recommended.
Last edited by Mike Dabrowski 2000; 03-13-2010 at 07:53 PM.
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