ORIGINAL: rcheli1


Are these batteries available for RC Heli`s??
I also checked out the link you gave me a lot of imformation I was looking closely for any hope in the moving forward on Lipo technology

ORIGINAL: rcheli1

Hello fellow members.
I have spent the best part of 2 days reading an incredible sticky
Lipo Fires Are Real! on RC groups forum.....now i`m terrified.

I am new to RC heli`s I am looking at a 600 type maybe LOGO?
First off..I wish to ask for a very short list of the very best Chargers
I was already prepared to buy the best now it`s a must I think.

I was originally going to ask what is the best way to charge batteries indoors??? now I am not to sure that is a good idea.

I am not even that impressed by Lippo bags but sure they help.
do not suppose anyone as come up with something better than lippo bags and ammunition boxes[img][/img] since the sticky was first started.
wondering if somekind of outdoor metal container would be a good place to store batteries? but do I charge them there to?

I will not be flying in winter Norway is very cold and a lot of snow..I need to know best method of storing batteries and How?
that would apply for the rest of the year also,although I would hope to be flying regulary .

I have tried reading as much as possible on Batteries and chargers and to be honest I am loosing my enthusiasm[img][/img]
(i have no local clubs or people to help)

And another question I have read many posts questioning the so called quality battery brands as against the cheapos?

I just wish to know what are considered the Rolls-royce of batteries from a safety and quality view point?

so to begin with a short list of 2-3 Chargers for me to investigate and secondly batteries to look out for

many thanks in advance

Regards Steve[img][/img]

ORIGINAL: blhollo2



I dont understand it..If people are so terrified or concerned with the danger ''potential'' of lipo batteries then use a safer alternative..there is are plenty of other options to choose from.

ORIGINAL: tony0707

HI
Anyone out there know how LIPOS perform in cold weather conditions ?
I think i read they are not that good in the cold but would like some people experienced on the subject of cold conditions
Regards Tony

ORIGINAL: t9dragon


What other alternatives are there to power and electric rc? NIMH?

Imagine if we could combine the safety and durability of nicads with the capacity and light-weight of LiPos. Wouldn't that be the best of all worlds? Well that's pretty much what you get with the latest battery technology known as Lithium Iron Phosphate (LiFePO4). Batteries based on this technology have almost the same power to weight ratio as LiPos but are far more tollerant of over and under-charging. In a situation where a LiPo might explode into flames, the LiFePO4 cell will probably just vent some harmless gas.

LiFePO4 Pro's: very high power/weight ratio very low self-discharge more tollerant of over/under-charge/discharge can be used for RC gear without needing regulators

LiFePO4 Con's: Only a limited range of battery capacities currently available Odd-sizes for most cells (not AA, C, D, etc) LiFePO4-capable charger needed LiFePO4 and A123,

what's the difference? Some people tend to use the terms LiFePO4 and A123 interchangeably but there is a significant difference between the two. The fact is that A123 is a brand name for a specific type of LiFePO4 battery that incorporates nano-technology to significantly increase the current-handling capabilities. The capabilities of an A123 battery are truly impressive with a 2300mAH pack being able to deliver currents of up to 100A for 10 seconds or more without damage. That's a 40C rating.

A standard LiFePO4 battery by comparison, may have only a 3-5C rating which is perfectly adequate for most RC applications but nowhere near as suited to hi-current applciations (such as electric power) as a true A123. When to use Well the answer to this is simple use LiFePO4/A123 batteries whenever it's possible. I've switched to LiFePO4 batteries for all my models now and have had absolutely zero problems. My NiMH receiver packs now sit unused in a drawer under my bench, having been replaced by some 1350mAH packs I built myself for under $10 each. My 30% Extra now has dual 2300mAH A123 batteries that can handle the nine hi-torque digital servos without even blinking.

Given that LiFePO4 batteries are cheaper, smaller, lighter and better in just about every way than any of the other technologies when used as receiver pack, I'd say there's little reason not to use them. I also notice that hi-current LiFePO4 batteries are now becoming available to replace LiPos for electric power. They're a little higger and heavier than the equivalent LiPo but for many folks, this will be a small price to pay for the dramatically increased safety and robustness they offer. Back: Lithium Polymer batteries (LiPo)