helicam62265
10-08-2006, 09:09 PM
i have heard the tp 1010 supercharger can charge a 6s evo 20 4900 mah to 95% in a half an hour how do you set the charging rate and what is the maximum amperage these batteries can charge@ im guessing 5amps?? does anyone out ther know??
The pack is 4900mah - thus its "1C" number is 4900 milliamps (ma) or 4.9 amps (A).
To charge in half an hour, you would need to feed it in excess of 2C (9.8A)
The Evo 20 packs are in fact capable of accepting a 2.5C charge per their website. In your case that would be 2.5 * 4.9 = 12.25 amps.
Now let's look at the problems...
1. The 1010C is will charge a 5s pack at 10 amps and a 10s pack at 5 amps. I'm guessing its max at 6s would be about 9 amps.
2. 6s is going to have a nominal voltage of 22.2 volts. To put 12.25 amps into 22.2 volts, you'd need to draw somewhere over 12.25 * (22.2/12) = 22.66 amps from your 12 volt source. That's a serious draw.
3. You will drastically shorten the number of cycles you get from your Evo pack. I don't know the numbers involved, but I would expect that each cycle you put it through at 2.5C charging would shorten its life by a similar proportion - if the pack would normally last 500 charges, you might get 150-200 out of it if you frequently charge at 2.5C
I'd say stick to 10-30-90 - you should get 10 minutes of flying, let it cool for 30 (give or take the ambient temperature) and charge it for 60-90 (1C charge plus balancing). Shortening those #s up (burning the pack up too fast, not letting it cool long enough, and charging too fast) while it may be safe (depends on the pack chemistry - it IS safe with the Evo20 to go faster than those numbers), will shorten its life
Teej