wiring batteries in parallel question

[Riko]

Hi,

after some research it seems that big golden connectors are better than deans plug, because they should allow more current?
For instance these connectors from Hyperion:
http://www.allerc.com/product_info.php?products_id=4492


I am thinking of a parallel set up of 2 Hyperion G3 4200 mAh lipo's.
The cables are 10 ag on those batteries.

But I was wondering if the following parallel connection for 2 batteries could be made?

(the scale of the connectors is not so right :p)

I am not a solder-man, but I suspect you would have to make such a cable by yourself?
So I would need some 10ga cables and the hyperion connectors and thats it?
Edit: I think I've found something: http://www.hobby-lobby.com/g3.5_para...81149_prd1.htm



thx a lot!

[Unsullied_Spy]

Parallel with bullet plugs is a little intereting because you have to get both sets of wires into the plug. Bullets are VERY easy to solder, though, and if you play around with different ways of stuffing your wires in there it should work but it'll take some messing with. I don't know the size of those Hyperion plugs, but 10 awg wire is pretty thick and you may have to get a little creative to get them in there. I run 5.5mm bullets on my motors and am switching my batteries over to them, and 10 awg wire fills them up pretty well.

EDIT: Depending on the size of those plugs, you may have to run both wires of your parallel harness into a single wire and do it that way.

[Riko]

can somebody explain what the difference is in the "current" column between the first and second column?


is the first column continious and the second column peak?

[Riko]

the Monster Mamba says it can handle 120A continous
and in this review they say it has 150+ Amps peak draws: http://www.beatyourtruck.com/prodrev...stermamba.html
Do they mean continious, or is that the maximum burst?

so at what column should one look, can somebody explain this :)

[Unsullied_Spy]

I'd guess the first number is continuous and the second is a burst, maybe 30 seconds? EC5s are good, they're 5mm bullets with a plastic housing. It isn't uncommon to pull 150-200 amp bursts out of these setups but Deans connectors (roughly 45-60 amp connectors) typically do the job just fine so the bullets will handle it without issue. The MMM doesn't really have a continuous rating because of differences in how manufacturers rate their controllers. 120A continuous is a LOT of amps, but odds are you won't be pulling that kind of continuous amps out of a truck since you'll likely run out of room or hit something before you have a chance to overheat something.

[Riko]

okay thx a lot, and can you explain what the difference is "burst-continious"?

I only know that the burst is like when you hit the throttle for example at the max...but continious?...hmm

[jokerjustin]

just like it sounds... say you hold the throttle at 50% for 10 seconds... that the continuous current draw

[Riko]

okidoki,
lesson learned :)

what is the 'normal' sort of cont current a 1/8 truck asks from the system?

[BrianG]

Most setups geared for ~40mph pull an average of 15-20A with bursts between 100-150A. Some a little higher, some lower.

[Unsullied_Spy]

We talked a little while on MSN and he wants to run 60 MPH, any idea on amp draw for that?

[Riko]

Originally Posted by BrianG

Most setups geared for ~40mph pull an average of 15-20A with bursts between 100-150A. Some a little higher, some lower.

wow, that isn't a lot, only 15-20A if geared for 40mph huh, I wonder how much the continious A would be for 60mph...

But I suspect a hyperion 4.5 bullet connector with 140A continuous and 280A bursts would be sufficient, even if geared for 60mph?


thx

[Unsullied_Spy]

Surface RCs are all about bursts, acceleration is where the amp draw comes in. I have a boat that can drain a 5000 mAH lipo in 3-5 minutes depending on the prop because it's all constant amps. That average amp draw is across the whole run, including stops and such. Those bullet connectors will be just fine for your application, as long as you can fit the wires in them.

[Riko]

yeah, I think they should be sufficient, those numbers (140 and 280) seem off the chart :)

I run a 3s 5000mAh rustler and I geared it at the top speed gearing of 31/76 and either the heat comes in after 10 minutes or the battery is empty after 15 minutes, so I had to gear down to enjoy longer runs and to avoid heath issues.

So, I think its clear I am kind of a speed freak rather than a basher. So I want to be prepared.


Lol am I correct in thinking that being prepared for speed set ups is a lot more expensive than for bashing?