help with power supply

[Psycho-Savvy]

I plan on getting a Hyperion 0615i Duo3. I will be charging two Hyperion 4 cell 3300mah at the same time. I will be charging them both at 5c which will be maxing the charger out. I need a power supply that can keep up with this charger when it is maxed out. What do you guys recommend?

[ksb51rl]

That charger will output 15A or 180W per side. Isn't about 3.25C the best you will get from it?
[180W / (16.8V*3.3Ah)] ≈ 3.25C.

Or am I missing something? (Been known to happen.)

[Hughes500Bob]

You have 6S 15 amps and 180 watts at each port. 11-28 volts DC Input.

4S 3300 at 5C is 16.8 volts at 16.5 amps so you can only charge at 4.5C.

4S 3300 at 4.5C is 16.8 volts at 15 amps = 252 watts and you only have 180 watts.

4S 3300 16.8 volts at 10.7 amps = 179.76 watts = 3.2C charge rate
THIS ^^^^^ is your max charge rate per port. THIS ^^^^ is what you will be charging them at on this charger.

At 360 watts this is probably about as good a charger for your application listed that you will find ..... especially all ready to go for dual packs. An iCharger 208B at 350 watts would be a very close second that would actually do a single packs at 5C .... but no better with both packs at the same time.

Now .... the power supply ..... for this charge rate you need at least 400 watts IMO. The closer to 16.8 volts and more than 22 amps the better.

Pyle linear 15 volt 35 amp constant for $136 http://www.ugotadeal.com/product_inf...74&ref=froogle

Pyle linear 15 volt 32 amp constant for $129
http://www.teptronics.com/psl362x.ht...hannelid=FROOG

And of course the Mastech Linear Power Supply HY3020D High Current 30 volts and 20 amps (both variable) which is great for 6S and 8S applications on chargers that can take high voltage inputs..... for $250! http://www.mastech.com

IBM 235 server supplies are available around the web if you are experienced enough to set them up for use.

Bob

[chet jamio]

You're right. The Duo2 and the Duo3 are both limited by their wattage outputs.

wattage required for 5C charging = 4cells * 4.2V/cell * 3.3amp-hrs * 2batteries * 5C = 555 watts

No charger can output 555 watts. 5C charging is not a realistic goal with the large batteries required by the Revo. It is only possible if you buy a pair of 208b chargers (about the same cost as the Duo3). But then you'll need a power supply that's capable of at least 650 watts to be safe. Unfortunately, ProgressiveRC doesn't have any more of those good deals on the Meanwell's, so a 650 watt power supply is not going to happen.

[Psycho-Savvy]

Thanks for all the help. I am still new at figuring out the formulas so this is a big help.

[chet jamio]

What's the purpose of the 5C charging? Is your goal to have non-stop driving? If so, are you charging off of A/C power or a car battery? There are other solutions available.

[Psycho-Savvy]

You have 6S 15 amps and 180 watts at each port. 11-28 volts DC Input.

4S 3300 at 5C is 16.8 volts at 16.5 amps so you can only charge at 4.5C.

4S 3300 at 4.5C is 16.8 volts at 15 amps = 252 watts and you only have 180 watts.

4S 3300 16.8 volts at 10.7 amps = 179.76 watts = 3.2C charge rate
THIS ^^^^^ is your max charge rate per port. THIS ^^^^ is what you will be charging them at on this charger.

At 360 watts this is probably about as good a charger for your application listed that you will find ..... especially all ready to go for dual packs. An iCharger 208B at 350 watts would be a very close second that would actually do a single packs at 5C .... but no better with both packs at the same time.

Now .... the power supply ..... for this charge rate you need at least 400 watts IMO. The closer to 16.8 volts and more than 22 amps the better.

Pyle linear 15 volt 35 amp constant for $136 http://www.ugotadeal.com/product_inf...74&ref=froogle

Pyle linear 15 volt 32 amp constant for $129
http://www.teptronics.com/psl362x.ht...hannelid=FROOG

And of course the Mastech Linear Power Supply HY3020D High Current 30 volts and 20 amps (both variable) which is great for 6S and 8S applications on chargers that can take high voltage inputs..... for $250! http://www.mastech.com

IBM 235 server supplies are available around the web if you are experienced enough to set them up for use.

Bob

If I was to get the 208b and max it out, would I still use the above power supplies or is there one that is better suited for it. Thanks

[Psycho-Savvy]

What's the purpose of the 5C charging? Is your goal to have non-stop driving? If so, are you charging off of A/C power or a car battery? There are other solutions available.

I have a very small charger and I am right at 65 min to charge 1 of my 4s. I plan on upgrading to a better charger, and my Hyperion 4s can handle 5c charge rate. I just want to get a charger that has a lot of power to handle the 4s. I will be charging from an ac outlet so I need a power supply. Right now I am charging one battery at 1c. If I could do 2 batteries at 3.5c that would be awesome!

[chet jamio]

Well, than I would say you should drive and charge your batteries in parallel. Basically, you wire your two packs together and never separate them. You can do this with solder, but I prefer to just make a harness. After that, you have a single 4s 6600mah battery. You can charge this at 3C on the 208b. This is a much cheaper option than the Duo3 and you get similar performance (3C vs 3.25C).

5C is only eight minutes faster than 3C (20 minutes vs 12 minutes) so don't go crazy trying to hit the 5C mark.

As far as a power supply, I prefer something a little more mobile than the stuff that looks like it should be in a laboratory somewhere. I'm often throwing mine in a bag and hauling it around. That's why I have the OFNA Supreme Power. It just seems better suited for my needs. The downside is that it only adjusts to 15.5 volts, so the charger can't quite hit the 350watt number, but it gets close enough.


Hughes500Bob - I can't get anything from your links, so I'm not sure what you were suggesting.

[Hughes500Bob]

In order to get the full 350 watts from an iCharger 208B (page 10 of manual) you need at least 17 volts of input ..... at 25 amps. I'm suspecting that that is at a 8S charge setting at 10 amps.

Chet, I'll try again .... and preview has these working! These are 15 volt supplies at 32 and 35 amps. Pyle psl362x and psl462x. The OFNA Supreme looks like a great deal!!

http://www.teptronics.com/psl362x.ht...hannelid=FROOG

http://www.electrawarehouse.com/prod...e=Pyle+PSL462X

[Triton7]

That charger will output 15A or 180W per side. Isn't about 3.25C the best you will get from it?
[180W / (16.8V*3.3Ah)] ≈ 3.25C.

Or am I missing something? (Been known to happen.)

Since when do marshals reply on the threads, I thought they are to police the threads and not respond unless a Traxxas rule is broken???