HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Sep 04, 2006, 05:08 PM
Registered User
AmpAce's Avatar
North by Northwest
Joined Nov 2003
2,422 Posts
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
AmpAce is offline Find More Posts by AmpAce
Reply With Quote
Sign up now
to remove ads between posts
Old Sep 04, 2006, 09:26 PM
Team Me!
P-38J-Lightning's Avatar
AB, Canada
Joined Mar 2005
3,161 Posts
and you dont have to charge it night before for a good charge. do it in an hour at the field!
P-38J-Lightning is offline Find More Posts by P-38J-Lightning
Reply With Quote
Old Sep 04, 2006, 10:43 PM
Registered User
AmpAce's Avatar
North by Northwest
Joined Nov 2003
2,422 Posts
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??
AmpAce is offline Find More Posts by AmpAce
Reply With Quote
Old Sep 05, 2006, 07:46 AM
Registered User
turk1's Avatar
Istanbul, Turkey
Joined Aug 2004
847 Posts
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.
turk1 is offline Find More Posts by turk1
Reply With Quote
Old Sep 05, 2006, 01:33 PM
Registered User
AmpAce's Avatar
North by Northwest
Joined Nov 2003
2,422 Posts
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
AmpAce is offline Find More Posts by AmpAce
Reply With Quote
Old Sep 05, 2006, 11:04 PM
Just-Fly-It
Augusta, Ga
Joined Sep 2004
433 Posts
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.
Michael Ga is offline Find More Posts by Michael Ga
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Question What Li-pos for himax 2025-5300 in a Flubber Mickymouser731 3D Flying 10 Jul 13, 2004 12:13 AM
How do you Charge your Li-Pos for your Heli ? mdttb Micro Helis 10 May 08, 2004 10:00 AM
How do you Charge your Li-Pos for your Heli ? mdttb Micro Helis 2 May 07, 2004 08:43 PM
Which Li-Pos for SB sport? Superman Parkflyers 11 Jul 18, 2003 02:20 PM
Li-Poly for 12 power supply Fubar Batteries and Chargers 5 May 09, 2003 09:50 AM