30 amps for 12v in your case to get 350W power for charger…
Start from 2nd reply, just put in numbers u got.
With input voltage in the lower range let say 12 volt instaed of 18 volt, the current rise for the charger output power to reach up to 400 watt.
400 watt / 18 volt = 22 amp, 400 watt / 12v = 33 amp needed
If u didnt get the idea, higher wattage power supply is recommended here. U dont want your supply failing, if u run it at max limit all the time (though im sure these supplies are sturdy and can take a beating and have safety factors built into them)
U just need the whatever max wattage your charger can take at the specified volts, in your case thats up to 30v, but these supplies will give 12v, which is just fine.
So yes, more is welcome, less is worse. If u took 200W supply thats all the charger could do, otherwise it wouldnt allow to charge or your power supply would restart itself or maybe just get super hot (if it was a dumb one)
It should… it is rated for more than your charger can do, your max is 2x 325W = 650W
So, if u got these 10-20usd extra take 1200W version to have some headroom, otherwise 750W should work good as well,.
In your case, if u charge at 12A (1c) per channnel, max wattage should be close to 300w anyway, after 4.1v per cell or even sooner, the charge power should drop…
With that in mind, power supply should see around 50amps total, so around 600W probably + 10-15% more, due to transformation losses or so.
So yeh, decision is up to you.
Theres also fancy power supplies costing over 100usd, sometimes 200usd made especially for hobby chargers… they output around 1000W as well, just cost more and have more fancy enclosure/case and might have display for input/output wattage and so on.
Just showing u budget friendly options.
And yes, more headroom the better, so u might as well take bigger version (1200W), maybe fan wont be as noisy.
Though 750W version takes 9A from wall, check how much it is for 1200W version
Hi I’m new here but thought I’d chip in my 2cents.
I have been flying race drone for a while and found the best power supply to be a server PSU. Relatively inexpensive.
Quick search found this you can search for better.
Oops not allowed to share link sorry. Easy to find tho
I run a 1200w psu. Which is way more than you’d need to charge those at 1c. Sorry no number it’s just plenty😇
But hey if your charger can handle it then you can bump it up to 2 or 3c if your in a hurry. Obviously slower is better for your batterys.
You can run at 12v or 24v depending what your charger can handle. Higher voltage would be more efficient.
I run 24v on multiple isdt charger and use parallel boards when charging multiple packs at once.
Hope this is of some help to you.
Here a vid I just found showing how to do it not allowed to post link, just search server psu for lipo
you can search for better.
not allowed to post link, just search server psu for lipo