Do AAA batteries still pop out of the MH-C9000 charger?

I was sold on the Maha MH-C9000 charger, until I started reading several reports of at least one bay refusing to hold AAA batteries while charging. Has this been fixed or is there any resolution to this problem??

Shoot. I thought I was posting in the batteries section :sick2: Mods, can you move this please? Sorry

all I can say is there is no problem with mine, occasionally a couble of attempts to seat it properly, but they stay put once in.

I've called Maha and spoke to one of their tech support people and they told me, "Yes certain brands of AAA's are not exactly the right length and will have the 'popping' up effect." He didn't have a solution for the problem. If you find a brand of rechargeable AAA that fits for you then it should always fit. It's just some brands don't want to fit in some Maha C9000 chargers.

Hello Smg,

OK, Moved...

I have some AAA cells that were salvaged from battery packs. They require a little extra effort to charge with the C9000. My "normal" AAA cells usually have no issues, but on occasion, one will pop back out after it is put in. I usually find that simply putting it back in works.

I don't have a wide variety of brands of AAA cells, but I haven't had too many problems.

Tom

I've never had a problem and have used AAA cells from Duracell, Energizer, Enleoop, GP Recyclo, and Vapex Instant.

I had a problem with some cells where the plastic label overlapped and covered part of the negative end of the cell. This caused a problem because the AAA contact spring in the C-9000 contacts the very outer edge of the negative plate and not the middle. The cells suffered broken electrical contact, they sometimes popped out, and the cell wrapping got damaged by the spring. Eventually I fixed it by carefully trimming back the wrapping to the very edge of the cell with a sharp pair of scissors.

Thanks for the feedback. I plan on using Eneloops in this charger.

I don't have any AAA Eneloops, but AA Eneloops have a design on the negative end that looks likely to cause problems if it were repeated unchanged on the AAA cell. For any AAA cell you buy, check that it has a smooth flat plate at the negative end with no inset ridges or wrapper overlap.

Mr Happy said:

... the AAA contact spring in the C-9000 contacts the very outer edge of the negative plate and not the middle.

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I can vaguely recall that I had one or two AAA Eneloop cells that popped out, but they didn't keep doing it. I don't recall if I did anything to fix them. In summary, it hasn't been a significant problem for me.

I've had no problem with Eneloop AA or AAA in my C9000.

The AAA eneloops (in the Costco pack) are bare metal on the bottom. The wrapper does not turn the corner. Smooth with just a vague hint of a depression in the center. Fits fine in the MH-C808M.

I had this problem a couple weeks ago when I ran some eneloop AAA cells through a refresh/analyze mode. Seems it only happened in slot 4. I may take a wooden toothpick and slightly bend out the negative terminal contact in slot 3.

TorchBoy said:

... they didn't keep doing it.

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Earlier this evening I had one pop out after almost exactly 10 minutes of charging. The wrapper on the Eneloop AAA is a tiny bit scrunched at one point, so I put it back in slightly rotated; it hasn't popped out again.

I had to find this thread manually. Neither Google nor the on-board search was any good at all. :thumbsdow

Which version of the charger do you have? I've heard this issue was fixed in the newer version. I had one of these chargers, newest version, but never charged any AAA's.

0G0B01

The C9000 that I received yesterday is version 0G0KA.

Will be charging some AAA in the next week or so.

TorchBoy said:

0G0B01

Click to expand...

That is an older version. Mine was 0G0E01 which I believe is the latest version as of right now.

ampdude said:

Mine was 0G0E01 which I believe is the latest version as of right now.

Click to expand...

"That is an older version." Black Rose's one is even newer.

If it starts with 0G0 it is the revised version. Any letters after that just indicate a batch number. They all have the same firmware.

If there have been any changes to the mechanical handling of AAA cells, you can easily see. Just look at the lower part of the contact spring near the display where AAA cells go and see if it contacts right at the outer edge of the negative end cap or somewhere nearer the centre. In mine the spring connects at the outer edge and AAA cells easily pop out.