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Thread ID: 117034 2011-03-31 02:41:00 Good brand NiMH AAA rechargeable batteries? braindead (1685) PC World Chat
Post ID Timestamp Content User
1190714 2011-04-01 03:10:00 The amps can be about as reliable as cheap psu ratings, I tend to buy my batteries from Jaycar as they claim to test them themselves before accepting the ratings.

I have Energiser, Dick Smith, and Jaycar branded NiMH AA and AAA batteries and they all work well. The energisers actually started to give me problems in my smart charger first (I've owned all for several years now) and the DSE ones are a little bit "fat" and don't fit in everything.

It seems the chinese manufacturers used by various cheap brands will happily label them with whatever rating you like regardless of the actualperformance.
dugimodo (138)
1190715 2011-04-04 03:05:00 Turns out PB do Eneloop. I have a charger and a bunch of AAs on the way. :thumbs:

Dick Smith have good prices on them too.

www.stefanv.com

That chap has done a pretty good test of them.
wratterus (105)
1190716 2011-04-04 05:42:00 Huge thanks to everyone for your info and tips. I always learn something on this forum - hadn't heard of Eneloop. Good stuff! braindead (1685)
1190717 2011-04-05 00:32:00 The 2500man - 2800mAh tend to have high internal resistance & high self discharge.
They work , just arnt that good. Avoid.

Go for approx 2100 LSD NimH, lower internal resitance & lower self discharge.
That means that they can sit around for quite a while without going flat
eg, Eneloop, Ready To Use etc etc
Panasonic & Varta also make good LSD batts, Eneloop was one of the 1st

Most important, the LSD dont like high charge rates, use say approx 300-600 mAh to charge them.
Most importantly, Get a good charger, Not a trickle or overnight charger.
1101 (13337)
1190718 2011-04-05 00:34:00 What's wrong with trickle? (not that that's what I do) Agent_24 (57)
1190719 2011-04-05 00:42:00 Most important, the LSD dont like high charge rates, use say approx 300-600 mAh to charge them.
Most importantly, Get a good charger, Not a trickle or overnight charger.

If you charge at 300ma, it will take several hours anyway; ie overnight.

I have a maha charger with a fast (1000ma for AA, 500ma for AAA) and a slow (300ma for AA, 200ma for AAA) switch. The slow charging takes at least 5 hours, but it stops the battery from getting warm. Once the battery is charged, it goes to trickle charge at 50ma.

What is wrong with trickle charging, I would like to know as well? As long as the charger doesn't over charge, I think its fine.
utopian201 (6245)
1190720 2011-04-05 01:26:00 The maha isnt what I'd call a trickle charger :punk

Overcharging, overdischarging & heat kills Nimh's
With trickle you run the risk of overcharging( as with my 1st charger )
The cut off point for charging is determined by dv (a drop in voltage indicates full charge)
This cuttoff point cannot be accurately determined on trickle charge
-I dont trust so called temp cutout either, I had batts (duds ??) get so hot as to burn my fingers . The noise should have been a warning :-)

SOME LSD's dont seem to like the higher charge current that normal Nimh's can take.
Thats why you use lower charge current for LSD's, ie dont charge at 1c
It certainly doesnt take all night to charge at lower rates, even thou the math doesnt seem to add up.

Its all here. (except info on LSD's, unless its been updated)
batteryuniversity.com
1101 (13337)
1190721 2011-04-07 01:41:00 Anyone happen to know where I can purchase a Maha MH-C9000 Wizard One Charger in NZ? They seem to be as rare as hen's teeth. braindead (1685)
1190722 2011-04-07 05:55:00 You can get it from ecobatteries.co.nz

I got my maha charger from photonlight.com
utopian201 (6245)
1190723 2011-04-07 07:34:00 Thanks very much utopian201! Much appreciated. Now that you have your MH-C9000 and have used it for a bit, are you satisfied with your purchase? It's $112.00 at ecobatteries...IOW, is it worth it? braindead (1685)
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