Recent content by bcwang

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    Test/review of Charger Panasonic BQ-CC55

    I had picked up a BQ-CC85 in Japan last year. It looks to be the same overall design and charge rate as this BQ-CC55 reviewed here. It seems to have been introduced more recently but I have no idea what's different about it. Does anyone have any ideas or had compared the two chargers and...
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    Japanese Vs Chinese Eneloop Cycle Testing Results

    I noticed for the first 200 cycles or so, the Chinese Eneloops had more capacity? Was this due to being charged fuller due to termination behavior differences? (which may reduce cycle life). Or maybe having slightly higher capacity degrades their life cycle performance. (something possibly...
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    Eneloop XX Vs Turnigy 2400 Cycle Testing

    Power Me Up, You had good answers to all my points so I'm not going to bother quoting them. I'm still wondering about the huge inconsistency in the XX cells, even if the slightly higher capacity is the reason they don't outlast the turnigy cells in number of cycles. I have some questions that...
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    Eneloop XX Vs Turnigy 2400 Cycle Testing

    A couple of ideas here: - Could the differences you're seeing in the same battery be due to differences in the two slots of your charger? If the voltage sensor is off in one, you could be overcharging in one slot and not the other which would dramatically reduce cycle life. - Maybe the...
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    New Maha MH-C800S 8 bay charger! Thoughts, anyone have one?

    I believe the Thomas Distributing description to be incorrect. I believe the most correct values are. 1000ma charge normal/ 500ma charge soft (AA or AAA) 250ma discharge normal/ 125ma discharge soft (AA or AAA) I came to this conclusion due to the fact that AA and AAA slots are electrically...
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    maha c9000 charge capacity

    It looks like your first discharge of brand new cells was at a lower rate (200ma) compared to your subsequent discharges (700ma). That could account for the differences in capacity you are seeing.
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    Maha MH-C9000 SUPPORT / FAQ - continuation

    Not quite related, but I just wanted to mention I just measured a new lenovo laptop at work from a foot away and noticed a 21.87 khz sound at 95db! 95db! Those who can hear the new c9000 buzz will be completely driven crazy by what that laptop is outputting. I can't hear the sound, but after...
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    Maha MH-C9000 SUPPORT / FAQ - continuation

    Surprisingly, it is an iphone app my friend has on his iphone 4. And if you have the 3gs or newer it is supposed to measure quite flat and samples at 48khz so up to 24khz sound can be detected. It's pretty awesome what you can do with an iphone these days...
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    Maha MH-C9000 SUPPORT / FAQ - continuation

    I tested an 0j0ca with one slot and there is a peak noise at a decently high 46db at 21.76khz. It tapers down to 26db by 20khz. So potentially you could be hearing it, and it would be even worse as this is a much higher frequency. This would explain why most don't hear it though, I think few...
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    Maha MH-C9000 SUPPORT / FAQ - continuation

    I can tell you that the newer ones don't make the noise anymore, I've seen 3 samples and all were rid of the whine. I've had 4 samples of ones from a few years ago and they all had the annoying high pitched whine. I can understand why some couldn't hear it as the frequency is very high. I...
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    Powergenix NiZn Poor Performance

    Maybe instead of going into the garbage you guys should contact powergenix and tell them what happened. Maybe they'll want the cells back to do some testing and fix the problem in the future. We are an enthusiast group and have more to say to them that may help improve their batteries.
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    CBA voltage accuracy

    When I first got my CBA-II it also showed like .04v off when there was no battery. I had to send it in to be calibrated and ever since it's been exactly at 0v with no battery. Maybe they don't test and calibrate each one after manufacturing until the customer complains, then they'll...
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    Recommend Best High Discharge Nimh AA

    Search around about the elite 1700s. I read somewhere that the current batch don't perform as well as they used to, significantly too. Right now I'd stick with eneloops.
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    Quark AA vs Quark AA2 battery life

    I actually produced a battery draw table or chart for the quark at different voltages somewhere on this forum. It will show the relative efficiency of the circuit at different voltages and you'll see the efficiency drops off a lot as you go towards single cell AA voltages. If you can find it...
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    Powergenix NiZn Poor Performance

    I heard the elite 1700s are not performing like they used to, like the manufacturer changed something. I'm waiting on the elite replacements that is still being sorted out, hope they perform better than the original elites. Too bad for the nizn, I hope I learn from these posts without damaging...
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