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  1. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    I wouldn't worry about them. They appear to be good cells with excellent capacity. I am pretty sure that I have "gone overboard" with my attempts to match cells. As I understand it, high variation is really only a true issue in devices/applications where one (or more) cells can get fully...
  2. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    I can't see me (or anyone else?) arguing too strongly against what Maha recommends... As I have already pointed out, I "made the mistake" of using lower current, but so far that seems to work fine too. I think "very warm" and "almost hot" are far too subjective. I think you will need to...
  3. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    There has been considerably discussion on this forum about Slot 1 of the C9000. It does tend to consistently give different (lower?) readings than might otherwise be expected. I don't think anyone has ever successfully explained why. Remember, however, that this device is far from being a...
  4. Rosoku Chikara

    Maha MH-C9000 SUPPORT / FAQ - continuation

    Thanks for explaining this! I finally understand why it charges for 16 hours. (This may be explained somewhere else in this thread, or on this forum... I cant say that I recall ever reading it before. If I ever did it was a long time ago.) In any case, what you say makes great sense to me...
  5. Rosoku Chikara

    Maha MH-C9000 SUPPORT / FAQ - continuation

    I believe you can assume that your cells are completely "topped off" after the Break-In mode. As I recall, it charges at 0.1 C (or 10% of cell capacity) for 16 hours. I believe in most situations, your cell would be fully charged under these conditions in about 10 hours (!0% x 10 = 100%). So...
  6. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    I think this has been made clear, but just in case... It is not actual voltage that is being discussed. It is a quick flash on the screen, when the cell is first inserted that shows a "voltage" number. That first flash of the "voltage" number is not the actual starting voltage of the cell...
  7. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    "Great minds think alike..." and all that. One other thing I did forget to mention: I am not entirely certain of this, but I have read several times on our forum that the C9000 flashes some kind of cell impedance or "internal resistance" value, once, and only once; and only very briefly when...
  8. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    Well, there really isn't much, I don't think. As I said, I don't even have my manual handy anymore. I just "use" my C9000 these days. But, let me start at the beginning for you. There are five things that you can do with your C9000 (I am not listing them in the same order as the selection...
  9. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    I don't have my manual handy, but this doesn't sound right. (Perhaps, I am not understanding what you you are saying.) I believe that the first thing that the C9000 does in "Analysis" mode (Refresh/Analyze) is charge the cell. So, I do not believe that they would recommend that you charge...
  10. Rosoku Chikara

    Just recieved my Maha MH C9000 today! But I need some beginners help......

    Let me be the first to congratulate you on what I believe is an excellent purchase! I have been using my Maha C9000 for nearly 3 years, and I have found it to be a wonderful product. I am not anywhere near the "Maha C9000 Expert" of this forum, but let me tell you about my experience. I have...
  11. Rosoku Chikara

    Best D Cell Rechargeable Batteries

    Interesting, I have never experienced that (yet). Thanks for the warning. I hate to damage my Eneloop wrappers. Does the damage occur on the ends? (Some chargers and some devices tend to do that if you are not careful, I have noticed.) Have you found any simple solutions? Perhaps you can...
  12. Rosoku Chikara

    Best D Cell Rechargeable Batteries

    I find that 3 AA cell to 1 D cell adapters, something like these, work great: http://www.ebay.com/itm/4-x-Parallel-Battery-Adapter-Holder-1-5V-Case-Box-Converter-3-AA-to-1-D-Size-/121534973216?hash=item1c4c0c8520:m:mr4uDgYzgVbR7vn5z8pXSJg As for batteries, I find that 3 x AA Eneloop "Black"...
  13. Rosoku Chikara

    Getting ready to buy my first rechargeables, very confused

    Thank you very much HKJ for your post. As usual, I learned something new. Balog, I think you already know of HKJ, since you refer to his battery reviews. But, let me assure you that we have received the "final word" from one of the true experts, and we should be honored!
  14. Rosoku Chikara

    Getting ready to buy my first rechargeables, very confused

    I assure you, "someone" knows. If necessary, try posting that specific question... perhaps in the LED flashlight section of this forum.
  15. Rosoku Chikara

    Getting ready to buy my first rechargeables, very confused

    So, this is all part of what makes understanding Li-Ion cells and flashlights so "interesting." As I understand it, the answer to this question depends entirely upon the flashlight. More to the point, it depends on the type of "driver" circuit used to power the LED. Some drivers take high...
  16. Rosoku Chikara

    Getting ready to buy my first rechargeables, very confused

    I am not the expert on this subject, so probably I should let someone else answer... but, I got to the end of this thread and saw your question, so I figured I might as well try. When you say "essentially" it makes it hard to know what you mean. They are similar to fuses or circuit breakers in...
  17. Rosoku Chikara

    14500 Battery question

    I guess someone should have addressed your question quoted above. Well, the answer is "Yes, they can do that." and they often do. China appears to be completely lawless in these matters. Best I can tell (based on my many conversations that I have had with Chinese businessmen) their cultural...
  18. Rosoku Chikara

    14500 Battery question

    Short Circuit, I tend to agree with Chris. As another indicator, it looks to me like a very poor (amateurish?) application of the plastic wraps. I would say your only real options are to recycle them now, and write it off as a learning experience. Or, get a low cost voltage meter and a decent...
  19. Rosoku Chikara

    Help please

    I am no expert, but I thought I would provide you with some "food for thought." 18611 seems like an unusual battery size to me. But, 18650 is extremely common and probably very close in size (4mm longer?), so I think you can easily get two good cells to replace your dead cells. ("18" refers...
  20. Rosoku Chikara

    Flashlight 'clones' on Amazon?

    Let me address your last question first: "A really decent 18650 battery" will almost certainly cost more than either of the flashlights that you are planning to use it in... That is not a bad thing, since the flashlights are quite likely a very good (low cost) value. However, please do...

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