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LiPo, the big guide thread *updated March '10* *


Garry

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Yes you can, but if you're going to drive until the pack is flat (like bashing), then you'll need a cutoff that will stop the car when the battery voltage reaches 3v per cell.

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I heard about these blowing up, that's why we don't allow them at Rugby. I was told to Youtube "Lipo fire" and I think it looks pretty cool!

Don't know how to embed videos on here so I will just post a link:

Now that was done by professionals in a controlled environment some bored European/Russian chaps in a car park, so in order for me to be Politically Correct I must say that you must not try this at home! God I hate political correctness, to be honest if you're stupid enough to do this on purpose in a confined space then you deserve whatever comes your way

Edited by danb1990
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hi been out of r/c cars for a while but was quite into a few years ago and now decided 2 get back into it got a old schumacher cat but decided 2 upgrade probabaly the new schumacher cat sx cus was pleased with old one but comes in two battery configuration!! been looking at lipo configuration but don't want to waste all of my current gear what new things do the new lipo require compared to the nimh batteries and any ideas what good equipment would go well in it many thanks look forward to plenty of helpful information

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hi been out of r/c cars for a while but was quite into a few years ago and now decided 2 get back into it got a old schumacher cat but decided 2 upgrade probabaly the new schumacher cat sx cus was pleased with old one but comes in two battery configuration!! been looking at lipo configuration but don't want to waste all of my current gear what new things do the new lipo require compared to the nimh batteries and any ideas what good equipment would go well in it many thanks look forward to plenty of helpful information

oh ok u think its worth going to lipo in a car like that got a few motors and novak cyclone speed controller so will probably get a charger cut out device and a comple batterys any specfic ones u can reccommend

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  • 1 month later...

6 cell LiPo? How big's the pack? :lol:

7.4v LiPo's are just 2 cells. And if you're racing in proper organised 5 min races, you don't need a cutoff as the pack doesn't get discharged that low in just 5 mins. If you're regularly using the majority of the capacity of the pack though, then a cutoff is needed.

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Yeah, all you need is a 2 cell LiPo cutoff.

LiPo packs are multiples of 3.7v instead of NiMH/NiCD which is 1.2v per cell.

7.4v is a 2 cell LiPo.

11.1v is a 3 cell LiPo.

a 6 cell LiPo would be 22.2v and be absolutely massive in terms of size, it would be a big pack for a plane. :lol:

DSC01929.JPG

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been running lipos for a bit in my mlst.

stupidly left a pack plugged in overnight (but switched off) and my charger refused to recharge the pack ( low voltage)....so it had been sitting for a bit till i was told on another forum that if the pack hasnt 'swelled up' , it is possible to revive the pack by chargeing the lipo on a nimh setting at 0.1a.

had nothing to lose ( but maybe my face, nothing much lost there! :lol: ) so i gave it a try, charged it till the voltage in the pack came up to around 6.5/7v keeping an eye on it the whole time for any 'swelling' of the cells, then continued to balance charge the pack on a normal lipo setting (1300mah pack i charged it at 0.8a just to be safe), charged up/balanced as normal.

yet to try it, but i thought this might be useful info for this thread?

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