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Thread started 06 Feb 2008 (Wednesday) 10:21
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How do you guys use your Maha C9000 with your eneloops or any battery?

 
orisky
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Jun 29, 2012 01:32 |  #31

ok after the discharge and break in (set to 1900 capacity), here's what my 4 eneloops look like:

2016mah, 1.43v
2015mah, 1.44v
2031mah, 1.44v
1993mah, 1.43v




  
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ben_r_
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Jun 29, 2012 01:38 |  #32

Huh, thats interesting that even after setting it to 100mah below theyre capacity the charger still came back with closer to their actualy 2000mah capacity. Pretty cool.


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orisky
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Jun 29, 2012 10:37 |  #33

When I run through a discharge cycle set to 500mah, any ideas why the flashing numbers after discharge is completed shows around 1700mah, 1.22v for each battery? I thought if it's discharging it'll be down in the hundreds. Am I misunderstanding what the discharge cycle does or are the numbers showing that's how much it discharged from the battery?




  
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orisky
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Jul 01, 2012 03:09 |  #34

Here's another set of discharge and break in, this time set to 2000 capacity. same eneloop hr-3utga.

1972mah, 1.44v
1965mah, 1.44v
1945mah, 1.44v
1958mah, 1.44v




  
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Heath
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Jul 01, 2012 05:11 |  #35

Very interesting thread.

I purchased the Maha C800S (external link), which I thought had more options that I would ever need, but it looks like the 9000 has even more options.

Should I get a 9000 for the additional features, and keep the 800S for general charging purposes?


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boingy
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Jul 01, 2012 19:54 |  #36

Bookmarked since I may get the C9000 soon!


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CloudLapser
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Aug 01, 2012 16:45 |  #37

Does anyone know what the "cycle function is for?
It doesn't say in the instructions why one would want to charge and discharge batteries a programmable number of times...




  
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sapearl
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Aug 01, 2012 20:00 |  #38

CloudLapser wrote in post #14801435 (external link)
Does anyone know what the "cycle function is for?
It doesn't say in the instructions why one would want to charge and discharge batteries a programmable number of times...

Hello cloud and welcome to POTN. According to page 4 of the instruction sheet I believe it's used to determine final charge capacity of a set of batteries:

http://www.mahaenergy.​com/download/mhc9000.p​df (external link)


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CloudLapser
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Aug 02, 2012 15:18 as a reply to  @ sapearl's post |  #39

Thanks for the welcome!
Uhh...I thought the refresh and analyze option was for determining capacity.
"Refresh & Analyze Mode
o Useful when the battery capacity needs to be determined."

"Cycle Mode
o Suitable for cycling the batteries multiple times."

But it doesn't say why.


Page 4 says :"If CYCLE mode is selected, it is also possible to review the battery
capacity of finished cycle after the completion of the first cycle"




  
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sapearl
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Aug 02, 2012 15:28 |  #40

CloudLapser wrote in post #14805714 (external link)
Thanks for the welcome!
Uhh...I thought the refresh and analyze option was for determining capacity.
"Refresh & Analyze Mode
o Useful when the battery capacity needs to be determined."

"Cycle Mode
o Suitable for cycling the batteries multiple times."

But it doesn't say why.

Page 4 says you can review the final charge capacity, but it doesn't say WHY on would choose to cycle...

Good point - I agree it is not the clearest of explanations and I typically don't use that function myself. My guess is that all it's doing is running some sort of analysis that will tell you what it's capable of holding? I don't really know. I'm sure somebody here will give a much better explanation - where is Tim when you need him? :D

Most of the time for my event jobs I just use the Charge or Refresh & Analyze Mode since I don't shoot jobs every week. If things will really sit for a while I will use Break in and if I don't feel like it's performing that well I will use Refresh & Analyze again. But the system really does work well and I like the feedback it provides.


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CloudLapser
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Aug 02, 2012 21:59 as a reply to  @ sapearl's post |  #41

Thanks for your support...
how do you like the set up so far?




  
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kay188
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Aug 03, 2012 16:40 |  #42

CloudLapser wrote in post #14805714 (external link)
Thanks for the welcome!
Uhh...I thought the refresh and analyze option was for determining capacity.
"Refresh & Analyze Mode
o Useful when the battery capacity needs to be determined."

"Cycle Mode
o Suitable for cycling the batteries multiple times."

But it doesn't say why.


Page 4 says :"If CYCLE mode is selected, it is also possible to review the battery
capacity of finished cycle after the completion of the first cycle"

Refresh & Analyze will charge, discharge, and charge the batteries and give you a final mah reading of the cells.

Cycle Mode will charge and discharge for how many cycles you want it to do, such as 10 cycles for example.
It will keep charging and discharging 10 times, giving a final charged battery result.

At the end of the cycles you have selected in cycle mode, you use the up and down keys to cycle through the mah ratings that the charger reads after ONE full discharge and charge cycle.

---------

I always discharge any batteries that are low, such as in a flash I use, @ 100ma, and charge them at 200ma to achieve maximum charge capacity.

My batteries has lasted so long this way. Also, I don't need to refresh and analyze them as I charge/discharge slowly anyways.
I will charge at faster rates if needed to. I just discharge them slowly after usage, or no use at all to maintain the cell's in top operating performance.


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Aug 27, 2012 18:44 |  #43

Great thread. Dumb question but how do you have it discharge and automatically charge? Do you use cycle instead? I find that I discharge, and once that's done, I can't press any other functions for that battery. I have to take the battery out, reinsert it and then charge.


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lar55
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Aug 27, 2012 19:32 |  #44

You are correct, there is no "discharge-charge" setting, and also that you have to remove and re-insert the batteries to start a new mode. So if you really want to do that, you have to use a discharge cycle, re-insert batteries, then use a charge cycle.

I mostly just do a regular charge cycles, and once in a while do a Refresh/Analyze (which seems to take about 12 hours). This is with Maha "Imedions".




  
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Ming-Tzu
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Aug 27, 2012 23:01 |  #45

Thanks for the info. I figured as much. One more thing. I'm assuming there's no quick way for me to figure out how much power I have left on the battery without going through a long process?


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How do you guys use your Maha C9000 with your eneloops or any battery?
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