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New Cellpro Charger

Old 10-25-2008, 10:00 AM
  #1  
Tall
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Thumbs up New Cellpro Charger

Looks really promising, and now has a discharge function (finally!)

http://www.fmadirect.com/new_applications/multi4.html

my only complaint is I got the cellpro 4s two months ago, and it already dropped in price.
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Old 10-25-2008, 02:09 PM
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firemanbill
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That does look like a good one. I have both their 4s and 10s and am very happy with the performance of both!
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Old 10-25-2008, 02:19 PM
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Bill,

Have you used the Cellpro 4S at rates higher than 1C?
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Old 10-25-2008, 02:31 PM
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I just use the auto detect on it Kev and let it do it's thing. Plug in the batt and push the button once to begin charging.

Now the 10s.... Yup!
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Old 10-25-2008, 02:34 PM
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Auto detect.....work on any brand Lipo, or jst FMA?
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Old 10-25-2008, 02:42 PM
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all of them I guess.... Using the pigtail adapters to hook up other types of batts and still just plug it up to start charging.
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Old 10-25-2008, 02:45 PM
  #7  
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OK Thanks buddy.
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Old 10-25-2008, 03:06 PM
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Not sure if there's confusion in here or not, but just in case:

Auto detect will choose charge voltage based on number of cells, but not amperage based on an individual battery back's ability to accept a charge. An average or low quality lipo should never be charged at more than 1C, but FMA clearly states that their 25C packs can handle to 2C to 3C charge without damage, and this must be manually selected in the 4S charger by scrolling through the charging options.

That being said, the 4S default is to charge Lipo at 1C. As it also has an A123 charging mode, I would recommend double checking each time you charge anyway by just holding down the button until the current mode pops up. You wouldn't want to waste time or batteries


-Jake
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Old 10-25-2008, 04:59 PM
  #9  
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I set my Cellpro 4 on the 3C setting for all my lipos and have never had one get warm. On larger batteries such as a 3S2100 it will only charge up to a maximum of 4 amps because that is the maximum amps for the charger.

This still lets me charge a 3S2100 that has been discharged to +- 50% in about 20 minutes.

The program in the charger varies the charge output throughout the charge cycle so the 3C max is not being sent to the battery all the time. Not sure exactly how it works but it works for me.

It also has a battery recovery feature that I have used a couple of times when I have forgotten to unplug a battery for several days. It only shows up when a low voltage battery is connected. It takes a while but both times I have recovered my battery and I am still using both of them.
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Old 10-25-2008, 06:13 PM
  #10  
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Originally Posted by InfiniteMotors View Post
Not sure if there's confusion in here or not, but just in case:

Auto detect will choose charge voltage based on number of cells, but not amperage based on an individual battery back's ability to accept a charge. An average or low quality lipo should never be charged at more than 1C, but FMA clearly states that their 25C packs can handle to 2C to 3C charge without damage, and this must be manually selected in the 4S charger by scrolling through the charging options.

That being said, the 4S default is to charge Lipo at 1C. As it also has an A123 charging mode, I would recommend double checking each time you charge anyway by just holding down the button until the current mode pops up. You wouldn't want to waste time or batteries


-Jake

umm... that's what I said... I just charge on the normal setting with the 4s. My 10s is what I fast charge my big 4000 packs on.
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Old 10-25-2008, 06:27 PM
  #11  
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Bill,

Newjak and I have both been eyeballing the Cellpro 10 (I know, I'm a little off topic), and we are both wondering about how it charges 2 batteries at once. Does 1 battery charge at the higher "c" rating and the other a lower? I'm a little confused on it. Say we are charging 2 11.1v 2200mah batteries, will they both charge at the higher "c" rating? I'm a bit grey in this area.

We both run Polycharge 4's and love the ability to charge more than 1 at a time, but we're also looking at the possibility of a higher charge rate, and it would be nice to have a readout telling us what exactly is going on with the packs. I've not read 1 single bad thing with the Cellpro 10, and I'm seriously swaying that direction.

Also, I read somewhere that BPHobbies has some adapter leads that work with these and are only about $3. Any clue on this issue?
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Old 10-25-2008, 06:30 PM
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It will charge up to 2 5s, or one 6 to 10s at at once. If you start both batteries charging at the same time it will fast charge them both at up to 3c.

I absolutely love that charger! I can charge 2 4s 4000 packs in about 25 minutes, and they do not even get warm.
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Old 10-25-2008, 06:47 PM
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Originally Posted by gfdengine204 View Post
Bill,

Have you used the Cellpro 4S at rates higher than 1C?
i've been charging exclusively at 3c since i first bought the chargers in the beginning of the year. i fly about 4 times a week and cycle my packs 2 or 3 times per trip to the park. i havent had one pack puff or go bad prematurely, nor a pack get warm during charging. basically havent had a single problem. and all sorts of batteries from tp prolites, kong powers, zippys, loong maxes, fma direct batterys, dualsky, eflite, etc, from 400mah to 2250mah, 12c-25c and not a single problem. same goes for about 5 other guys i fly with.


basically what i'm saying in that long winded speech is, you can charge at 3c with a cellpro without any problem.

ps the manual says batteries over 12c can be charged at 3c.
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Old 10-25-2008, 06:56 PM
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Thanks Yaniel!
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Old 10-25-2008, 07:02 PM
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Thanks Bill. Oh... I see that I drew Newjaks attention....
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Old 02-25-2009, 01:30 PM
  #16  
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Default Got it...CellPro Multi4

Received my new CellPro Multi4 charger, power supply and adapter yesterday. I've been charging using a Wattage Charge-it-all-sport through an Equinox balancer. With the Multi4 I found out I was maxing out at 85% with my set up. The Multi4 took over and charged to 100%. I now understand see why CellPro's rarely are for sale on classifieds.

swimmer
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Old 02-25-2009, 01:58 PM
  #17  
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FYI There is a Multi 4 Thread here

http://www.wattflyer.com/forums/show...ighlight=Multi

Cell Pro 4 amd Multi 4 are two very different chargers.

Charles
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Old 02-25-2009, 02:07 PM
  #18  
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Originally Posted by firemanbill View Post
It will charge up to 2 5s, or one 6 to 10s at at once. If you start both batteries charging at the same time it will fast charge them both at up to 3c.

I absolutely love that charger! I can charge 2 4s 4000 packs in about 25 minutes, and they do not even get warm.
80% = 3.2Ah X 4C = 12.8 A

max 10A charge current:
http://www.fmadirect.com/new_applica...0s_charger.htm

how does that work?

I really want a charger that can charge eight cells at 12A or more.... I keep going back and forth on the CellPro10

Wouldn't the pack getting warm or not be a factor of the pack, and NOT the charger? I haven't seen anyone talk about pack brand in the thread....
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Old 02-25-2009, 02:29 PM
  #19  
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A big Mylti 4 Thread which FMA monitors and contributs to here

http://www.rcgroups.com/forums/showthread.php?t=939336
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Old 02-25-2009, 02:41 PM
  #20  
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cell Pro 10 Thread here

My first post in that thread is #39 I believe and fist attachment post of mine is #64


http://www.wattflyer.com/forums/show...1&postcount=64

brief summary of available output power.

160watts with 12 volts input.

I really want a charger that can charge eight cells at 12A or more....
8X4.2= 33.6 volts X 12A=403 watts output .
I do not know of a 12-24 volts DC input charger with this much output power excepy for a pair of Hyperion 620i or 720i. They are 250 watts output each on 15-24 volts input and 220 watts each with 12 volts input.

620 does up to 6S (10A max)and 720 does up to 7S(20A max) so 8S would need to be split as im two ea. 4S.

4X4.2=16.8 X 12A=202 watts so no problem for a pair of 720is.


Charles
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Old 02-25-2009, 03:59 PM
  #21  
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Originally Posted by everydayflyer View Post

4X4.2=16.8 X 12A=202 watts so no problem for a pair of 720is.


Charles
Thanks for that! I can't seem to keep up with the plethora of chargers available....
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Old 02-25-2009, 04:43 PM
  #22  
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I guess I don't run my packs all the way down Max. My boy is using the same packs in his Diamante now (one at a time) and it does take about 40 mnutes to charge one of them up now. He runs them pretty hard and pretty low though so it has having to make a full charge.

Still beats over an hour though!
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Old 02-25-2009, 05:34 PM
  #23  
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Originally Posted by everydayflyer View Post
FYI There is a Multi 4 Thread here

http://www.wattflyer.com/forums/show...ighlight=Multi

Cell Pro 4 amd Multi 4 are two very different chargers.

Charles
Charles,

Just to be sure, am I missing something? I assume as you posted after I did that your comment was directed at my post?

swimmer

Last edited by swimmer; 02-25-2009 at 06:25 PM.
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Old 02-25-2009, 08:37 PM
  #24  
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No big deal. i was just pointing out that there was a Multi 4 thread with a more correct Title IMO.

To me it is somewhat confusing to have multi threads on the same charger as it make it more difficult at times.

This thread seem s to have many post on the Cell Pro 4 and few on the Multi4.

Charles
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Old 02-25-2009, 08:46 PM
  #25  
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Thumbs up

Charles,

I've bookmarked the thread and will read through it when I get home. Thanks for the link.

swimmer
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