I think I fried something!? I need a bit-mechanic
 

I over charged my dual cell S2K and now the run time is crap. like 1.5 minutes. I just left it on the charger I made from 4 AA batts. But for like 30-45 minutes!:o Man what a stoner move! Any ideas?:confused:

The fact you have runtime at all means the PCB is ok. You just need new batteries.

Nuts! I'vve got the batteries, now I just gotta get back in there. After I routed the wires through the two spoiler posts. Damnit! Well thank you for the timely response oh btw, can I use two different mah batteries like 150 and 50? Double btw, nice avatar, I love the Simpsons!:D No beer and TV make Homer something something.- Homer, one of the haloween episodes;)

I am not sure about mixing capacities. Mah. I personally wouldn't.

...go crazy?

Don't mind if I do!

Ok backto two 50's. Thanks again! Do u dual cell?

I did a dual cell in another bit, but because I lowered the body and couldn't get it all to fit. It was fast though. Its in bits at the moment.

I am waiting to do a laymens mod on this bit. L3V3L1 is going to send me the cells.

I am tempted to a get a zipzap because they are bigger. More room for batts.

I put a 50 and a 150 in my bB, and it worked just fine. Little longer run time than 2X50's, but not as much as 2x150's. Performance was good though. Wheelies out the yang.

I could'nt pull wheelies with my dual-cell and a 2.6, but my 3.8 is shot.:( Gotta clone 2.8 but it's too long.

if you mix different amperage batteries the total amperage of the two wired barreries will be that of the lower capacity one
so if you put in the 50mah with the 150 mah it will be only 50 mah

My clone motors have WAY out performed my 2.6's and my 3.8's. If they're too long, just sand/shave/grind a teenie bit of the button-nipply-nub off the back end of it, it'll fit. They fit mine just fine w/ a snibbit of modification.

Well put! A little brain salad surgery never hurt, as long as you're careful, and it works.



Definitely do not mix mah (mili amp hour rated) batteries, it's wrong and it's dumb. You should be ashamed. :mad:
Well, not really, but it works LESS well than the lower mah rated one because of electrical inequalites when charging. :o

Whenever possible you want new matched pairs (or whatever). Used matched ones are okay too, as long as they are the same mah rating.

bc12m bc12m

I was TRYING to blow up my car when I mixed. I was pissed at it. It had the last laugh, so I was nice to it and treated it to a paire of 150's later.

Thanks, time to order some batts. Where can I get em cheap on the web?

Lord nick's terrible mistake
 

Lord_Nick_D wasn't correct when he said that the current of the low bat. dominates. Of course, if you want longer run times you can mix different rated bats (one hi,one lo), like 50 and 200Ma , for example, and actually get 250Ma. You just have to link them in parralel.

One of us is not following correctly, I think he WANTS them in series for performance (speed) purposes, right?

I was right
if you wire the batteries is series wich is the only way people are going to be doing it for these cars for double voltage my rule of the lower current being the total is correct
trust me I learn't it in robotics I right ask anyone

i have one of my bits set up so it can be in series and parallel. in parallel you can charge on a normal controller then switch back to series for the power or have it off so the battery doesnt drain.

Yeah I'm going for power. Can I just put90 sec. timing capacitor inline on my charger? With like an led after to let me know when it's done?

no you cant you could do that if you were just upgrading the battery to 150mah but because of the extra cell you must up the voltage by either taking out the current limiter or by making an external charger
Just search for duel cell mods and you will get all the answers you need
I want to do a duel cell too but I cant find any batteries