Need to combo some chargers for higher voltage

[999zip999]

Ok I have a meanwell hrp 300 24v 10a adjustable turned to 29v and a HP 600 12.6v 47a set for at 42.5 times two to charge my lifepo4 24s so they do about 12amp each for total of 85.1v for 7 yrs
So now getting a new battery 20s 6p Samsung 40t 180amp but with 90amp bms. I need a charger for two months Can I safely series all four of those chargers ? The HP 600 are isolated.
I also have a meanwell 350 27v 13a mean well and can series all three mean Wells but two different models with equal voltage find all three for a final voltage at 84 volts for the BMS and my lifepo4 will just have to be charged at 84 volts for 24s

 

[999zip999]

Bump Help.

 

[goatman]

you have a 12.6v 47amps, is there a boost converter that can jump that high to 84v 7amps? i dont know electronics

 

[999zip999]

When the two are combined for 42.5v they only give 12amps for half my pack the new one is 20s Samsung 40t and 90amp BMS the other is 24s lifepo4 no BMS 7yrs old and heavy. So to charge set to 84v is fine for both.
Thanks Goatman

 

[999zip999]

B900W NC DC Constant Current Power Supply Voltage Adjustable Boost Ammeter
I found these boost converter. I have had trouble thinking of using this in my garage without me next to it.
https://www.ebay.com/itm/113866209970

 

[goatman]

thats a cool little unit, ive got all these bike chargers with xt60 connectors. i can put xt60 connectors on that boost convertor with digital display and set amps/volts to what i want instead of opening up the chargers and adjusting pots :thumb:

 

[999zip999]

Ok order that one. Waiting fo boast charger.

 

[999zip999]

Poked around in the garage found the old pimg kingpan 600watt 48v 16s lifepo4 5amp. 10 or more years old. I used it for 15s homemade pack for 5 months till blown. Open it up found a 63 volt cap blowing up replace with 100 volt cap it works but only used it once in awhile. Stop working found a blown fuse replace fuse still didn't work put it on the shelf for 7 years.. found put a new fuse in and it worked charging my A123 24s to 83.7v so close to my New 20s pack.. So maybe turn up to 84v for bms on 20s pack the 24s lifepo4 no BMS.
If I would have bought another kingpan but 900 Watt but charger 95.00 and 82.00 shopping and tax
So brought the 99.00usd free shipping one.