How to discharge in series and charge in parallel [solved]

ESK8 Electronics
21

Hey everyone, this is a excerpt of my wiring. I left everything i dont need for this question.

wiring.jpg416×766 81 KB

When i charge my board i deplug the xt90 plug from the parallel adapter from the vesc [1]. Then i deplug the parallel adapter (blue filled plugs) [2] After that i plug my dual charger in the two separate charging wires [3]

I am doing part [2] because i think it is not a good idea to have a connection (parallel adapter) between the two batteries. Am i right? Does it matter or do i am able to leave the parallel adapter plugged? Maybe you have a better idea?

My goal is to create an easy solution for charging my board without the need to disconnect anything at all: just plug two charging cables into it and get ready for charging.

Thanks in advance

22

I think u can leave blue connected and charge w one charger

23

Well, i have a dual output charger with 2x 400w output.

If i am in a hurry i can charge it (at 16A each battery) in half an hour. (Batteries max charge rate 16A). Also i already soldered it like the diagramm but for my future plan i am looking to get a bms.

For now i just need to know if i can leave the parallel adapter plugged to the batteries?

24

So, your only running 6S?

25

Yes, only 6S at the moment.

26

I agree with @Hummie. If you charge in parallel both batteries have the same connection. Therefore, their is no need for a second charger. You could get a parallel 6s balance adapter like this one: http://www.ebay.com/itm/Parallel-2x-JST-XH-Balance-Adapter-6S-/301177571701?hash=item461f950975:g:a8MAAOSwv0tU~3EY

Although the balance leads probably shouldn’t be hit with more than 3 amps.

27

How to charge in series? I have 2x6S in series and I need to charge it with 6S charger. I dont want to unscrew 4 screws every time… I can do ports in case and so on…

28

you cant do (2) 6s packs in series with a 6s max charger.

but you could simply parallel charge them. I dont know if your charger could monitor all 12 cells though and doubt it.

29

I usually charge my batteries on separate chargers if I run them in series. Usually it’s two 3s batteries to give me 6s. So, two 3s chargers. I leave the balance plugs on the outside of the enclosure. If you leave them in series and try to use the parallel adapter I listed above, I believe you would fry the adapter.

30

I merged these topics because the same info is covered.

31

Thank you very much. Somehow I did not find this thread but it is very helpfull!

This sounds like a plan!

32

Love your diagram I think this is what I’m going to try to do One question, is there a reason I couldn’t combined the 2 charge leads into one (so there is only one XT-60 for charging) if I’m going to be charging in parallel?

33

Read again, that is what LowGuido said.

34

If u connect the batteries to a single plug they will be permanently in parallel and then u can’t break the connection to do series.

35

I think he just means a parallel harness that he connects the two batteries to for charging. That would work.

36

Yea if he removes the plug/connection when riding.

37

Ok, is there a way to do this replacing the XT-90s loop key with TB’s anti-spark switch?

38

20160617_225140.jpg1808×2419 1.6 MB

This would be a solution especailly if u have a 12s system

1 Like
40

Sorry for reviving the thread. I just have one question :stuck_out_tongue:

With this wiring diagram, would you be able to make a custom connector that connects the batteries in parallel outside of the board, as well as connecting the balancing cables in parallel, to replace the two chargers with one 6S charger? Just want to be sure

41

Could your diagram be used with one charger (parallel charging two batteries)? I have an antispark switch between the VESC and the batteries. The potential problem I see with using one charger with this diagram is, the VESC (or in my case the anti spark switch) would be powered up by the charger while parallel charging the batteries. Or wont this be a problem because of the anti spark switch?