Li-Pos For Ignition Power? - RC Groups
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Sep 04, 2006, 05:08 PM
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AmpAce's Avatar
Discussion

Li-Pos For Ignition Power?


I'm working on a project where I'll be using a Roto 70V2 engine. The instructions say to use a strong 4.8 volt ignition pack, but also that any voltage from 4.8 to 6 is O.K.

I could lighten the battery load considerably by using a 2 cell Li-po pack and a 6 volt BEC. or "battery eleiminator circuit".

Has anyone here tried this? I have heard that li-pos don't lend themselves well to use as ignition batteries, something to do with voltage spikes, I think. Hopefully the BEC would help to level these out, and with a large enough li-po, say around 2600 mah, I think it should work, and still be a lot lighter than an equivalent nicad pack.

Any thoughts?

AmpAce
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Sep 04, 2006, 09:26 PM
Team Me!
P-38J-Lightning's Avatar
and you dont have to charge it night before for a good charge. do it in an hour at the field!
Sep 04, 2006, 10:43 PM
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AmpAce's Avatar
Li-pos actually hold their charge so well that you could charge it a week before, and it would still be good to go. This system sure sounds good on paper, but are you using one??
Sep 05, 2006, 07:46 AM
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turk1's Avatar
As far as I know Li Po s are very risky on keeping them properly.I mean much for fire risk or blown up etc.One should be on watch everytime.
Sep 05, 2006, 01:33 PM
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AmpAce's Avatar
I've used Li-Pos extensively for over 3 years without any incidents. The biggest danger is from shorting them/discharging too fast, or charging too fast or at too high a voltage. I do store them in a fireproof container though.

AmpAce
Sep 05, 2006, 11:04 PM
Just-Fly-It
Quote:
Originally Posted by turk1
As far as I know Li Po s are very risky on keeping them properly.I mean much for fire risk or blown up etc.One should be on watch everytime.
Nuts! The most dangerous thing about lipos is they allow the mentally challenged to purchase them.


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