Airborne batteries

[Anthony Romano]

Do you guys remove your li from the plane when charging like the AMA 
recomends? What about temp if you leave your plane in the car?

Anthony


>From: Adam Glatt <adam.g at sasktel.net>
>To: discussion at nsrca.org
>Subject: Re: Airborne batteries
>Date: Thu, 06 Oct 2005 13:34:37 -0600
>
>Lithium polymer has some advantages, but also some disadvantages.
>
>Pro
>Extremely light: 1320mAh for 58g, 2000mAh for 80g
>Choose your exact voltage by use of a regulator (20g more weight)
>No self discharge. Charge today, fly next month with confidence
>
>Con
>Battery can ignite in flames if you make a mistake.
>Battery can be ruined if you leave your plane on.
>
>I'm not sure about cost.  parts.rctoys.com has these costs:
>5.1, 5.6, or 6.0 regulator for $21
>1320mAh battery for $33
>regulator w/ fail safe switch w/ 2100mAh battery for $66
>
>I've been flying lithiums for three seasons now and will never go back, but 
>I have a lot of experience with the technology. For someone new to 
>lithiums, there is a lot of learning to do.
>
>For a charger, you can get a simply plug, push, and charge charger for $45. 
>  I wouldn't go that route, though.  It is important to know how much 
>capacity you use per flight so you know how many flights you can do on a 
>charge.  To know need you need a charger with a display, like the Triton, 
>Hyperion, Duratrax Ice...all in the $110-140 range.
>
>Adam Glatt
>
>Bob Richards wrote:
>>Guys,
>>  I'm needing to replace several nicad airborne packs for my radios (as 
>>well as a couple of transmitter packs). I'm wondering what has changed in 
>>the technology in the past 8 years.
>>  NiMh packs had just hit the market about 10 years ago, and as I recall 
>>it seemed that they did not stand up well to vibration - several inflight 
>>failures being reported. Seemed they were ok for transmitters. Has that 
>>changed?
>>  I know Li-ion and Li-poly are now available, but what type of charging 
>>apparatus am I looking at investing in? I also think I need to use a 
>>regulator with these?
>>  I don't presently have a fast field charger and would like to have one, 
>>is there one that covers all the above bases?
>>  Thanks in advance,
>>  Bob Richards.
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