Cheap RC chargers in series

Will it work to charge my 18S A123 pack using three of these in series?:

http://dx.com/imax-b6-2-5-lcd-rc-lipo-battery-balance-charger-100-240v-us-plug-35190

I don't want to split my pack when charging it but keep it in 18S configuration. They all have their own 12V supply and as long as I don't connect the ground pin on them I should be ok?

Anyone tired this with this charger (or similar, there are tons of clones of clones...) ?

I did see the thread about the turnigy quad charger that just resurfaced but I already have one of these chargers and it seems like less mods and since shipping and PSU is included a less money...

i am currently charging with a rc charger and providing they do have their own psu for supply then yes the can sort of be wired in series but not how you may be thinking

eg bat neg----charger one---charger two---charger three---bat pos wont work as the chargers will terminate differently as they cant be both started and stopped at the exact same time so you very well could damage one or more chargers

eg2 bat neg-----charger one----center-tap from pack----charger two----center-tap from pack---charger three---bat pos will work and the center taps off the pack would wire you into a set number of cell strings in series or you could do what i have done and have your pack broken up into sub-packs for simplicity and dummy proofness (sometimes i am very tired after work plugging in my bike) pics to follow in a sec
i use the G.T. POWER XDrive 6 6A/4x60W 1-6S Balance Charger and it works grate
the advantage to having sub-packs i have found is that if some cells go bad in your pack you can take a thrd of you pack apart for repair esier then taking a hole apart

the charger i am using has a drawback though and that is that as the charger is 4 in one the ground is not isolated so no series config available but is still works grate and it has the versatility i want in a charger

as you can see i have used Anderson plugs as they are very modular and make it dummy proof to take my sub-packs out of series for charging and put them back into series for running the bike

i find this to be a excellent solution to using rc chargers if you are concerned about the potential of them not being isolated

i bought the Anderson and pack shrink tubing from http://www.ebikes.ca (locally called grin technology in Vancouver)

i got the charger from http://competition-rc.com also local to me

best of luck in your charging rig and if you have any additional questions about mine feel free to ask

Ok, just to clearify, your telling me that this wont work:



But this will?



Why? As I understand the turnigy quad charger hack it does just that, separate it into 4 isolated chargers, or?

thats exactly what i am saying and the reason is that the chargers may be isolated by having different input power supplies but as soon as you turn one charger off or it reads that its finished it will do one of 2 things... it will
a) not allow current to flow though and turn the other 2 chargers off with a connection break error (can be hard on the chargers)
b) allow current through but not absorb any voltage causing the other 2 chargers to have a over voltage condition possibly smoking them

the reson that this could and very well wil happen is no two chargers are created equal
this is due to the small variance in electrical components used so the output will not be 100% equal
so charger one could finish much before charger 2 or 3 causing some and possibly many more issues that have not up to now been discussed
the only reason ppl are able to do that with power supples is that there is no "charge termination" meaning they will keep outputting final voltage until unplugged
so that being said you can run them into the sub packs without breaking series connection (or charge through the balance leads provided they are of a heavy enough gauge to handle the charging current)because they are isolated but i would advise against letting the casing of the chargers touch as it will most likely be grounded to the neg in/output and would desalt in possible damage to the chargers, power supplies, and batteries
and this is why i have just gone with a harness to break my pack up from series connection to 3 stand alone batteries

if anything i have said up to this point is somewhat unclear (as it sometimes can be) let me know and i can re explane some of the last couple of posts in more detail
i sometimes forget that peeps don't know what i do and take some knowledge as self explanatory and or redundant

i have the turnigy mega 800 dual
and i was wondering if it is safe to wire like



i mean by safe if there is isolation in the charger such that i wont blow the charger or cause sparks connecting the battery.


i have a chevy volt 12s battery and unfortunately the only charger able to do 12s is

http://www.ebay.com/itm/EV-PEAK-A9-1350W-25A-8s-10s-12s-LiPo-Li-Ion-LiFe-Battery-Balance-Charger-With-/152618539861?hash=item2388c61b55:g:LpkAAOSwUIhZY2Ix


unfortunately at $250 it is not the cheapest option.

it may be possible to split the pack at the cell 6/7 junction with dremel by splitting the junction bar in half and the bottom part of the bar where it connects to the balance bus embedded in the plastic and add 2 new terminals to the split junction bar but that may not be easy to do.