As liveforphysics says, yes, just as simple as setting the max voltage to what you want of the pack, plug it in and let it get on with it. You do have to watch for cell balance and take care not to overvolt any individual cells of course
The reason I was asking wojtek for pictures of his board was twofold...Foy my own interest and since he has a different MEanwell to the S-350 to see if it can be mod'ed similar to how boostjuice and other have done with regard to voltage mod (SVR1) Current mod (R33 and SVR2) and a fan mod.
I did both current mod and voltgae mods to mine ( see the letter box shaped slot on my picture ) In that letterbox , you may be able to see the tops of 8 multi turn trimpots. I have 8 trimpots, 4 for each Meanwell...Two current trimmers and two voltage trimmers per meanwell..Switchable so i can select two voltage ranges and two current limits.
Sico.. if you do the fan mod as per Commanda and her instructions, I do not think you find there is any change to the current output. Somewhere on one of the Meanwell mod threads is a schematic...take a look..then mod the transistor that turns the fan on...leave the thermistor etc as is. The mod involves shorting out the Collector and emitter of Q5.
I put a switch across mine rather than chop out Q5 entirely...see my pic again and the two switches either side up near the case hinge. Making it switchable like this you can either have always on in Manual or auto as meanwell intended
Here is the inside of mine
The chief benefit of the fechter board on meanwells is you can adjust them from the front without removing the cover, I guess
yes, and the end of charge detection As you can see from my build...if you are doing a mod to the trimmers to adjust voltage or current ...then bring the trimmer out of the case on leads as I have done
I set the current limiting pot on about half and this took the built in current limiting to 5A from about 9A (i.e. psu destroying). No idea why this feature isn't exploited by the maker
I think it depends on the version of the supply you have I bought two S-350-48's and they had un populated parts of the board near the R33 resistor. Off the top of my head R37 and SVR2...so some designs did have it used my the manufacturer. As standard many of these spplies seem to be set for 135% of their rated output...so if you just connect a pack up to one of these PSU's then it will run at 135% till it burns out...so a S-350 will put out 470Watt (11.4 amps at 41.5 volts...till it dies. The current mod is to reduce this down to at least it rated power.
I have made mine switchable with a 4 pole switch. so when i switch between voltages (36 and 41) I also get a corresponding change in the current limit....higher current limit for the lower voltage.
But having said all that...this applies to the S and SE supplies wojtek has a SPV 1500-24 supply...probably a complete different beast. Only pics of his internals will tell...or has anyone already used one?
A pair of those at 42 volts each in series...i could charge my 20S 4p 20 Ah pack at 35 amps....1.75 C...still well within the 5C charge rate stamped on them...Strange thing...7 of the 8 packs had 5C charge...one of them had 10C charge ...otherwise all identical