Lipo Batteries

[Alex34]

Be interesting to know how 50C effects the performance.

I normally run 20C but after having the spectre installed and the motor upgraded the 20C seems to not be enough.

I'm estimating the mosfet and motor pulling about 30amps and my 20C batteries were only able to handle about 20amps constant.

When using my larger RC batteries versus my 20C airsoft batteries the difference is very noticeable. ROF and trigger response is quicker.

I haven't tried this 2000mah one yet but it should have the same results as the larger RC batteries, being that it can handle three times the amount of amps required.

 

[proffrink]

A lot of batteries have very high burst c for quick spooling up of high-torque motors. Can't check the link right now but it may be the case that it can't do a constant 50c.

 

[Alex34]

This one is 50C constant. I use a lot of Vampire Racing products for my RC cars and they are very much a performance brand. I have 6 other Vampire batteries and trust the brand as I have used them for years. I just found out over the weekend they made this battery for micro RC cars.

It's always good to have a battery rated at least 2 times higer than the amperage you require (at least in RC it is)... especially when running an electronic controller/mosfet. I would think this will benefit airsoft applications as well.

 

[Sitting Duck]

Have deffo noticed difference in the "zest" or response in 20, 25 & 30c lipo's too

If a battery says 25-50c I have been told take it as 25c BTW

On a stock 18:1 setup 7.4v with a mental neodym...

30c can double fire on a 350fps full stroke setup

25c can over-run a little pre-cocking but single shot

20c will behave itself better.

RPS wise we are talking aprox 1 to maybe 1.5rps increase

per extra 5c's eg: 21 on 20c to 24+rps on 30c

Please note this aprox as it was noticed on different boxed/guns with a mix of bushings & bearings in most

But if a lipo says 30c - its 30c

If I says 25c-50c take it as 25c not something in between

If you want 30 or 35 then get one that says 35c on it

I like zippy compact ones they seem to perform very well and usually are a smidge smaller than turnigy lipo's of same spec.

Got a few zippys 2200mah 25c plus some others that have provided quite a bit of punch when required

Not really tried much beyond 30c Kong one

Well that is my lipo experience except blowing one up in the house

 

[Alex34]

Have deffo noticed difference in the "zest" or response in 20, 25 & 30c lipo's too

If a battery says 25-50c I have been told take it as 25c BTW

On a stock 18:1 setup 7.4v with a mental neodym...

30c can double fire on a 350fps full stroke setup

25c can over-run a little pre-cocking but single shot

20c will behave itself better.

RPS wise we are talking aprox 1 to maybe 1.5rps increase

per extra 5c's eg: 21 on 20c to 24+rps on 30c

Please note this aprox as it was noticed on different boxed/guns with a mix of bushings & bearings in most

But if a lipo says 30c - its 30c

If I says 25c-50c take it as 25c not something in between

If you want 30 or 35 then get one that says 35c on it

I like zippy compact ones they seem to perform very well and usually are a smidge smaller than turnigy lipo's of same spec.

Got a few zippys 2200mah 25c plus some others that have provided quite a bit of punch when required

Not really tried much beyond 30c Kong one

Well that is my lipo experience except blowing one up in the house

I agree with you on the above, however, I have yet to blow a lipo up .
I doubt you will experience much difference above 30C as your motor will have a limit of amps it can draw from 7.4v.

A good thing you have pointed out is there will be differences with setups, etc. If your gun is stock I would stick with 25C as there is nothing to buffer or smooth the rps and you will most likely get over-run as you have experienced. Most mosfets will brake the motor where needed.

Also agree that "25C - 50C" is marketing malarky. Never trusted it and never will. Always go with a "constant" spec rather than a varied one.

 

[Sitting Duck]

I agree with you on the above, however, I have yet to blow a lipo up .

I doubt you will experience much difference above 30C as your motor will have a limit of amps it can draw from 7.4v.

A good thing you have pointed out is there will be differences with setups, etc. If your gun is stock I would stick with 25C as there is nothing to buffer or smooth the rps and you will most likely get over-run as you have experienced. Most mosfets will brake the motor where needed.

Also agree that "25C - 50C" is marketing malarky. Never trusted it and never will. Always go with a "constant" spec rather than a varied one.

stick a pin in a slightly puffed lipo thinking it will let some air out - yeah that will work....

NO - don't do this split second of pure f*cking stupidity

fizz fizz spark spark as I come down the stairs....

F*CK THAT - drops on floor of carpetted stairs/hallway...

WOOOOOOOOF - bursts in flames

OPEN THE DOOR !!!

"what ????" says the missus

OPEN THE F*CKING DOOR !!!!

I kicked the inferno football out the front door perfectly - bloody amazing coz I suck at free kicks

jeeeez - that was not funny at time plus needed to change my pants

but funny looking back it - though missus still don't think so

chaps when they tell you not to play with stuff like do not puncture batteries - there is a very good reason especially on lipo's

but I was always the stupid one that will always have to ignore the wet paint sign - oooh yeah, that paint is still wet

and the reason why Brainiac puts it the extra warning - don't try this at home

No really DON'T !!!!

I wanna work for brainiac - I love blowing things up - lipo's gearboxes etc......

 

[Alex34]

LOL

 

[Alex34]

I've done some drilling, grinding and cutting .

It isn't the prettiest but it's far from ugly and it's clean... well most of it.

Not posting any pictures yet, having a go with it tomorrow at Bunker 51 to see how it stands up to a skirmish. If all is well then I will post pics... if not then it's back to the drawing board.

One thing I will say, Griptite velcro is unbelievably strong stuff. Definitely stronger than the "heavy duty" sticky tape it's attached to!

Performance wise, this 2000mah 50C battery powers my setup to it's max potential so it's mission accomplished as far as performance is concerned.

 

[n1ckh]

I've got a few gens ace 1300mah rated at 30c which I use in my g36c as they'll only fit in there & just as powerful as the 9.6v nimh

Shame I can't adapt my Lipo monitor the plugs into the esc for my rifles (as I use lipos in them all)

I've got some zippy & turnigy 2s, 5000mah lipos but need a battery bag to use them which looks hidious

 

[Alex34]

Ok, so below are pictures of what I have done to accommodate the small, hard case 50C lipo battery.

Like I said before, it isn't the prettiest but I think it looks better than using a battery bag etc. There was a bit of trial and error and improvisation so in hindsight it could have been better modified; if I get my hands on another stock, it definitely will be.

View attachment 18110

View attachment 18111

View attachment 18112

View attachment 18113

View attachment 18114

View attachment 18115

View attachment 18116

View attachment 18117

View attachment 18118

 

[jcheeseright]

why not just use the pre-cocking feature of the very expensive MOSFET you have fitted?!

I ran all my recoils on 25C 1300mAh batteries using the stock TM EG1000 motors and using precocking funny old thing... instant trigger response!

 

[Alex34]

why not just use the pre-cocking feature of the very expensive MOSFET you have fitted?!

I ran all my recoils on 25C 1300mAh batteries using the stock TM EG1000 motors and using precocking funny old thing... instant trigger response!

It was rate of fire that was the problem. Precocking made little difference on auto and multi-shot bursts.

 

[jcheeseright]

oh, I don't think I've ever used auto on mine!