Wow talk about being socked in the jaw..... I have found out that charging a 6s1p 4400 in one hour ain't happening, well atleast not in the field. Tried to charge the pack off my car battery, that didn't work, the car battery dropped below 11.7 which makes my charger failsafe quit charging the lipo (failsafe is there so you don't kill the car battery). I never had this problem with my large 4s4p 8000 packs. I'm no electrical engineer but my guess the is the problem's due to the Lipo's being 22.2volts and the car battery can't keep up with the voltage drain.
At home my lousy 3amp power supply can only charge the battery at 400mah so thats a 10 hour charge! I used my friends beafy 65 amp power supply and it can charge the pack in an hour, but a good power supply at home does me no good in the field. []
Well my point is don't think your going to be able to buy a few batteries for your TREX 600 and rotate them on the charger unless you have an AC supply and a monster power supply.
What are the E-raptor guys going to do with a 10s1p pack? Hate to own a heli that requires a 32v battery.

That's why I skipped and went straight to a nitro helicopter because of the electrical requirements of the bigger electric helicopters.

I did the large Nitro and electric heli shoot-out and the neither wins out over the other. The solution is to have three helis. One larger nitro, one large electric and one small electric, then all your bases are covered. For me it's the TREX 450,600 and a Raptor 50.
In the airplane world the problem also exist only I am still trying to figure out why people want to convert there large nitro planes to electric.
You can fly a large electric heli around the park, as long as you don't get to crazy. But a 40% size airplane requires area and it doesn't exactly stop and hover around like a heli (although some people try to).
I am not going to fly my Fliton Inspire 60 at my local park whether its nitro or electric. Thats why I belong to a flying club, I wouldn't fly a nitro heli at the park, just because of the noise issue, although I do know some guys who do and it really isn't that big of a deal, you just got to be selective where you do it.
Electric airplanes are way cool...except the problem with wind....actually all RC airplanes are not much fun over 15 MPH winds, your just fighting the plane and doing nothing more then taking a chance of bonking it on landing, but heli's on the other hand do alot better in the wind, the rotor disc absorbs wind turbulance and usually when its windy it can be good stick practice.

2 packs for the 600, 3 for the 450 and nitro for the Rappy 60. no need to field charge.
I do however have an adaptor to charge 3 cells at a time for the 600 and a 5 amp field charger so time will tell if my auto battery will do the job. If it does the charge time should be under 2 hours (I hope)

I've heard of people using deep cycle marine batteries to run their chargers, somtimes linking two or more of them in parallel to raise the amp output. Or you could dive in deep and get a noisy, gas guzzling generator.

Brian

My generator is neither noisey or gas guzzling. Costs about $1.00 a day to run and makes enough power for several of us.

I bought one of these: [link=http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=170084863210&ssPageNam e=MERC_VIC_RUPX_Pr4_PcY_BIN_Stores_IT&refitem=1700 84863133&itemcount=4&refwidgetloc=closed_view_item &usedrule1=UpSell_LogicX&refwidgettype=cross_promo t_widget]Kipor Generator[/link] Bought it on ebay from: Rensale. I actually picked it up from him. Super nice guy. The TP 1010C works flawlessly with it and yes, it is very quiet (54 dbs).

Luis

One reason us airplane guys go electric is because of altitude. Up in denver we can lose 20% of engine power and prop efficiency!!! Large electrics dont have the issue. Me, I still like my big gassers though. Something about the sound. I'll stick with my 450se electric heli though.