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trickybit · 08-11-2012, 11:22 PM

I run an iCharger 308B off of a 24V pair of power supplies; love it. I often parallel charge @ 30A into 6S and it's great.

In my plan to start field charging off a generator, I'd like to have a second rig capable of putting 2C into a pair of 6S 5000mAh packs.

I have an older Meanwell SE-15-600, which can do 15V, 40A ideal. I'd like to use that if I can to save some bucks on a higher voltage PS.

To put 2C into a pair of packs, that's 20A, @ about 24V, something like 480W.

Without factoring in efficiency, that's 480/15 = 32A from the PS.

So in broad numbers, the PS can handle it.

But I believe a 308B can't pump 30A from a 15V PS, can it do 20? The doc says it will do 500W @ 12V. I'm not asking for more, and giving it 15V. But I don't know whether the charger will do the 20A output on 15V input.

Does this basically work?

Thanks,
Jim

el guapo · 08-11-2012, 11:45 PM

you probably have a "306B" its a 1000W (or 50A input). so at 50A at 15V. its becomes a 750W charger. your 600W supply will be the limiting factor.

5S or 6S?

600W/(4.2*6) = 23.8A on 6S.
600W/(4.2*5) = 28.6A on 6S.

20 will be fine.

trickybit · 08-12-2012, 01:47 AM

yeah, it's 306B, and 6S as mentioned. I'll probably try another iCharger, and if the PS doesn't make it, get another. thanks guapo-guy.

The WoodCrafter · 08-12-2012, 10:44 AM

I always thought that a 306B needed 24V to get full output and if the voltage was 12V you get half output.
Anything in between would be an incremental increase in output.

el guapo · 08-12-2012, 11:55 AM

THE QUESTION IS, WHAT IS THE MAX POWER AT 15V.

page 10 of the manual has the answer. they add a 90% efficiency to the calculation.and have table for guys that are afraid of math. they estimate 675W at 15v.

trickybit · 08-12-2012, 12:27 PM

There's a MANUAL?

el guapo · 08-12-2012, 02:37 PM

Quote:

Originally Posted by trickybit

There's a MANUAL?

http://www.hillrc.com/UploadFiles/iC306B_en.pdf

trickybit · 08-12-2012, 03:57 PM

Quote:

Originally Posted by el guapo

http://www.hillrc.com/UploadFiles/iC306B_en.pdf

Oh, that manual. Thanks.

Their homepage is very "dynamic," under all 3 browser on MacOS: http://www.hillrc.com/

08-11-2012, 11:22 PM	#1 (permalink)
trickybit Registered Users My HF Map location Join Date: Sep 2007	Can I set up a 2nd charger on old 15V 600W PS? I run an iCharger 308B off of a 24V pair of power supplies; love it. I often parallel charge @ 30A into 6S and it's great. In my plan to start field charging off a generator, I'd like to have a second rig capable of putting 2C into a pair of 6S 5000mAh packs. I have an older Meanwell SE-15-600, which can do 15V, 40A ideal. I'd like to use that if I can to save some bucks on a higher voltage PS. To put 2C into a pair of packs, that's 20A, @ about 24V, something like 480W. Without factoring in efficiency, that's 480/15 = 32A from the PS. So in broad numbers, the PS can handle it. But I believe a 308B can't pump 30A from a 15V PS, can it do 20? The doc says it will do 500W @ 12V. I'm not asking for more, and giving it 15V. But I don't know whether the charger will do the 20A output on 15V input. Does this basically work? Thanks, Jim __________________ PRÔTOS 500 Plastic, Logo 550SX/600SX, PRÔTOS Max2 up and flying! Team MSH USA, Team Cyclone, Team Xnova

08-11-2012, 11:45 PM	#2 (permalink)
el guapo Registered Users Join Date: Dec 2010	you probably have a "306B" its a 1000W (or 50A input). so at 50A at 15V. its becomes a 750W charger. your 600W supply will be the limiting factor. 5S or 6S? 600W/(4.26) = 23.8A on 6S. 600W/(4.25) = 28.6A on 6S. 20 will be fine. __________________ Greg MSH USA Heli Flight Team Mikado V Team Lynx

08-12-2012, 01:47 AM	#3 (permalink)
trickybit Registered Users Thread Starter My HF Map location Join Date: Sep 2007	yeah, it's 306B, and 6S as mentioned. I'll probably try another iCharger, and if the PS doesn't make it, get another. thanks guapo-guy. __________________ PRÔTOS 500 Plastic, Logo 550SX/600SX, PRÔTOS Max2 up and flying! Team MSH USA, Team Cyclone, Team Xnova

08-12-2012, 11:55 AM	#5 (permalink)
el guapo Registered Users Join Date: Dec 2010	THE QUESTION IS, WHAT IS THE MAX POWER AT 15V. page 10 of the manual has the answer. they add a 90% efficiency to the calculation.and have table for guys that are afraid of math. they estimate 675W at 15v. Attached Thumbnails __________________ Greg MSH USA Heli Flight Team Mikado V Team Lynx

08-12-2012, 12:27 PM	#6 (permalink)
trickybit Registered Users Thread Starter My HF Map location Join Date: Sep 2007	There's a MANUAL? __________________ PRÔTOS 500 Plastic, Logo 550SX/600SX, PRÔTOS Max2 up and flying! Team MSH USA, Team Cyclone, Team Xnova

08-12-2012, 10:44 AM	#4 (permalink)
The WoodCrafter Registered Users Join Date: Jan 2010	I always thought that a 306B needed 24V to get full output and if the voltage was 12V you get half output. Anything in between would be an incremental increase in output.

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