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LIFE or A123

Old 02-09-2013, 01:33 PM
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stoneenforcer
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Default RE: LIFE or A123

Life cells are much more reliable then a123. Life direct feed no regs is how I run all my jets,
Old 02-09-2013, 05:24 PM
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Default RE: LIFE or A123

The one and only setups I using in all mine jets is power safe spectrum rx and life or a 123 with no problems and no voltage regulators just charge them for all 4-5 flights if using less than 4000 mah totall I think the life are little better for longer endurance less voltage drop in critical stage ,spectrum rx is very sensitive for that if the voltage drop to 3.6 for nano second you will expiring brown out so just make sure you charge the batteries after storing and 4-5 flights.
Old 02-09-2013, 06:02 PM
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Default RE: LIFE or A123

I personally have used the LiFe Green Hobbico packs of various sizes with very good success. I trust these to any of my birds or helis. I do also use a123 and these are great as well.


~V~
Old 02-09-2013, 07:11 PM
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Default RE: LIFE or A123


ORIGINAL: stoneenforcer

Life cells are much more reliable then a123. Life direct feed no regs is how I run all my jets,
How do you figure that? Are you implying that you need a regulator with A123 and don't with LiFe?

LiFe are generic A123 batteries
Old 02-09-2013, 07:45 PM
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Default RE: LIFE or A123

Sounds to me like y'all are saying that A123 is good and LIFE is also good.  Actually, I use both and have had no problems with either battery (have had problems with pilot error and mechanical ... but that is another story).  Anyway, I watch the number of flights and recharge after three or four flights or so, depending on which airplane and how many servos in use.  I like the quick recharge, light weight, multiple connectors...to each his own - just my opinion.     
Old 02-10-2013, 12:15 AM
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Default RE: LIFE or A123

No comments on my question on A123 heat tolerance..??
Old 02-10-2013, 01:32 AM
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Default RE: LIFE or A123

I've often wondered what the difference is myself. Good information.

Now for another question.

What is the differeence between LIFE/A123's and Li Ion?

I've been using Duralite Li Ion's exclusively for many years now and have never had one problem. They hold charge when not in use and i have never had a pack voltage drop off suddenly.
Old 02-10-2013, 03:42 AM
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Default RE: LIFE or A123


ORIGINAL: AeroFinn

No comments on my question on A123 heat tolerance..??
The information you are looking for is on this specification sheet.

Greg

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Old 02-10-2013, 03:51 AM
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Default RE: LIFE or A123


ORIGINAL: OldRookie


ORIGINAL: AeroFinn

No comments on my question on A123 heat tolerance..??
The information you are looking for is on this specification sheet.

Greg

Thanks for the info..oh well, if 55 celsius degrees is the limit not to exceed, then I probably need to move the batteries from inside the cowling in the fuse..what a pita as I probably need to mount ballast on the nose to maintain the CG in the same place where it is now..
Old 02-10-2013, 04:08 AM
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Default RE: LIFE or A123

I have run two 2s A123 packs in my 50cc Yak cowl, and haven't had any heat related problems with the A123 packs in 4 years with this setup.
It must have been hot in the cowl, as I had some heat related indications on internal engine parts. I had to replace a stuck ring.

Greg
Old 02-10-2013, 06:30 AM
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Default RE: LIFE or A123


[quote]ORIGINAL: OldRookie

I have run two 2s A123 packs in my 50cc Yak, and haven't had any heat related problems with the A123 packs in 4 years with this setup.
It must have been hot in the cowl, as I had some heat related indications on internal engine parts. I had to replace a stuck ring.

Greg
[/quote

Greg, thanks for your input. What has to be taken in account, maybe, is that we fly short 10-15 min flights and then the air in the cowl cools down...
Old 02-10-2013, 08:41 AM
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Default RE: LIFE or A123

A123 and Life packs are nominal 6.6 volt (7.0-7.1 fully charged) Li-Ion are the first versions of the new battery tech back in the 90's. they progressed into the LiPo of today. Li-Ion and LiPo are 7.4 volts nominal and 8.2-8.4 fully charged. The A123 and LiFe batteries are safer in a crash and mis use where the Li-Ion and LiPo have a greater chance of catching fire with misuse or crash.

I crashed a 2100 Hobbico LiFe at around 140-150 mph. The bpack was smashed up into a square and no heat at all in the pack even after all day flying as I threw it on the concrete for us to watch. Nothing
Old 02-10-2013, 10:42 AM
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Default RE: LIFE or A123


ORIGINAL: airraptor

A123 and Life packs are nominal 6.6 volt (7.0-7.1 fully charged) Li-Ion are the first versions of the new battery tech back in the 90's. they progressed into the LiPo of today. Li-Ion and LiPo are 7.4 volts nominal and 8.2-8.4 fully charged. The A123 and LiFe batteries are safer in a crash and mis use where the Li-Ion and LiPo have a greater chance of catching fire with misuse or crash.

I crashed a 2100 Hobbico LiFe at around 140-150 mph. The bpack was smashed up into a square and no heat at all in the pack even after all day flying as I threw it on the concrete for us to watch. Nothing
Thanks for the info.
Old 02-10-2013, 03:03 PM
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Default RE: LIFE or A123

I would suggest all of you read this. http://www.hangtimes.com/a123_batter...iants_faq.html Steve knows more about battery technology than all of us put together, he builds them for the military and commercial use first and hobbies 2nd. There is a BIG difference in liFe and A123 and if your plane costs a couple of thousand dollars why would you want to scrimp on the battery which arguably is the most important item in your plane next to the receiver.

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