hv chargers.....what are my options?

[Jdpb614]

I'm kind of lucky and have value hobby.com local so I pick up from their warehouse. They also happen to be an authorized icharger dealer. I also use their gforce batteries and have been reasonably happy. After seeing your vids though I think I'm going to have to pick up some revo's and spc to try.

[kfxguy]

I'm kind of lucky and have value hobby.com local so I pick up from their warehouse. They also happen to be an authorized icharger dealer. I also use their gforce batteries and have been reasonably happy. After seeing your vids though I think I'm going to have to pick up some revo's and spc to try.

I have 2 3s packs I just put for sale.....

I found a power supply here at work that puts out 41 amps....for free. Lol

[Jdpb614]

It's not just about the amperage it's also how many watts on the 12v rail it supplies.

[kfxguy]

It's not just about the amperage it's also how many watts on the 12v rail it supplies.

Will 492w do? That's what I have to start with.

[Jdpb614]

Yes that will work. There are tons of write ups online how to do it. I will tell you the 25 watt 2 ohm resistor works best.

[kfxguy]

Yes that will work. There are tons of write ups online how to do it. I will tell you the 25 watt 2 ohm resistor works best.

Resistors? For what? Don't I just need 12v? I figured our what's 12v out.....

[Rocstar]

Resistors? For what? Don't I just need 12v? I figured our what's 12v out.....

Computer power supplies are load dependent. Therefore a resistor is wired in to act as a load. I would suggest if you're going to mod a computer PSU, read up, be careful, and understand why things are done the way they are.

[kfxguy]

Computer power supplies are load dependent. Therefore a resistor is wired in to act as a load. I would suggest if you're going to mod a computer PSU, read up, be careful, and understand why things are done the way they are.

Thanks and will do.

[Rocstar]

http://www.kbbforums.com/post1493.html#p1493

[kfxguy]

http://www.kbbforums.com/post1493.html#p1493

Thx! I actually fell asleep reading on it last night. One guy used the fan across the 5v side and that gave him the load instead of a resistor....I think that's the route I'll go.

[Jdpb614]

Most of the fans have intelligent circuitry which allow variable speed based on heat and load. I would just use a resistor you can pick one up at a frys or radio shack. Like I said earlier 25watt 2 ohm seems to work best.

http://customers.swcp.com/~tandberg/LinkedPages/SailplaneArticles/PowerSupplyATX_03.htm

Third post down link to more info than you could ever need.

http://www.rcgroups.com/forums/showthread.php?t=446764

[Jdpb614]

I was using a surecharge 2010 which is not a terrible charger. It could only charge my 2x3s 5000mah packs which I run in series at about 2.5-3 amps. I can now charge the same packs at 10 amps. I know you aren't concerened about time but when you can charge 4 3s packs as 2 6s packs in the same time it took you to charge 1 3s pack you'll want more. I can fully charge said 6s pack in about 25-30 minutes.

[Brushless55]

Are there any that charge above 4.3v per cell ?

[Peter A]

A little while back I got a reactor charger (20A)from HK. Not too bad a charger so far and I did discover that I can reset the end voltage on it and it does other stuffI haven't figured out yet. But... unfortunately one day my daughter (15) got sick of it beeping and decided to turn it off, by disconecting from the supply!!! Bugger bec. it fried the balance ports and now it will only read/balance 2s packs. I can still fast charge with it with and as long as I don't need the other balance ports it is ok. Just a bit annoying though! Interestingly I couldn't find it at HK today, it seems to have vanished from their store!?

[kfxguy]

I ended up getting an icharger. ...it charges much faster than my x4. I like it a lot so far. It discharges about 3 times as fast.