Eneloop batteries question

[Modelworks]

worse then that, they are 2 at a time chargers..meaning they measure jacksh*t.

That is bad. Never charge two cells at the same time because how can you tell what each cell is doing ?

 

[Eli]

That is per spec from the manufacturers, not internet rumors of 1.0v.
The 1.29V is pulsed at high frequency and the way the circuit works it measures the voltage at the battery for 1.25V. Again per manufacturers spec.

Putting 1.45V on a battery to bring it to 1.25V is a linear method of charging and is not recommended.

Links? I have never read anything that says 0.85V is an acceptible discharge level for a NiMH or NiCd. Again, below 1.0V, and certainly below 0.90V, will permanently damage a NiMH cell.

The Maha C9000 is one of the best chargers on the market, and it seems to charge my batteries very well. I trust that Maha knows what they're doing. A fully charged NiMH battery should read 1.35V after resting for 24hrs.

Unless these are specs for Eneloop type batteries specifically, or something? I may not be aware that they're that significantly different than regular NiMH batteries. Unless this is the case, your numbers are contrary to everything I've ever read, and my own personal experience.

 

[Ramma2]

I use one of these:

http://www.buy.com/prod/la-crosse-te...206134141.html

for charging all of my eneloops. It is great because you can do individual cells, and fully discharge partially drained batteries before charging them back up. Also has a reconditioning cycle you can run if need be.

 

[pontifex]

what battery "tester"?

any free enloop charger is going to be of dubious quality, i doubt even costco could sell a battery set with a decent charger without their customers facing a bit of price shock. bundled chargers are likely just 5 dollar cr@p.

It's a Powerex tester that came with either the Powerex charger I mentioned above.

It's a small square thing that has an arm that lifts up and you put the battery between the base and arm and there's a gauge that says good/low/replace or recharge.

 

[killster1]

i use eneloop in everything must have 40 of them. I also use the charger that came with it. Works fine, Isnt a quick charge either takes 4+ hours id say.

 

[Ksyder]

I use one of these:

http://www.buy.com/prod/la-crosse-te...206134141.html

for charging all of my eneloops. It is great because you can do individual cells, and fully discharge partially drained batteries before charging them back up. Also has a reconditioning cycle you can run if need be.

Will that do AAA's as well?

 

[Ramma2]

Will that do AAA's as well?

Yessir it does AA and AAA cells.

 

[0roo0roo]

It's a Powerex tester that came with either the Powerex charger I mentioned above.

It's a small square thing that has an arm that lifts up and you put the battery between the base and arm and there's a gauge that says good/low/replace or recharge.

useless, as said

 

[pontifex]

useless, as said

yeah, thats it exactly

 

[0roo0roo]

Beyond being useless, those are hard to use, the needle just keeps wagging back and forth forever I bought one a long time ago cuz it was cheap ..for the kicks.

 

[pontifex]

Beyond being useless, those are hard to use, the needle just keeps wagging back and forth forever I bought one a long time ago cuz it was cheap ..for the kicks.

maybe you got a lemon, because mine doesn't keep wagging back and forth. It moves to the spot and stays there. I'm sure if I shook it it might move.

Sure, it's not precise, but it can tell me if the battery is dead/low or still ahs charge.

 

[magicrat03]

Never had a bad Eneloop out of the box but I buy them from Thomas Dist.

I use this Powerex charger made by Maha for my Eneloop and other rechargeable AA and AAA and it works like a charm. And is know to support low discharge batteries like the Eneloop as some chargers do not. It charges 4 at a time and you can set each batteries charge/discharge rate separately.

http://www.thomasdistributing.com/s...html?SP_id=&osCsid=n2nu0kvb88f7lpp8vlttlumiu3

 

[0roo0roo]

maybe you got a lemon, because mine doesn't keep wagging back and forth. It moves to the spot and stays there. I'm sure if I shook it it might move.

Sure, it's not precise, but it can tell me if the battery is dead/low or still ahs charge.

i bet it can show you the voltage without load, thats not too hard. i have doubts it does anything useful. never mind if its calibrated for alkalines or nimh. the decent chargers like lacross and such can cycle through a battery and tell you its true capacity and state. the cheap tester doesn't tell you much useful, even some of my very old cells i stopped using for a year still are "good" by the testers reading, their capacity is probably pitiful even when fully charged at the wear level they are at though. i looked at some of my batteries in my devices that i know have been used for a while, they all read "good" but its pretty vague, you gotta beat the battery dry before it reads below that.

 

[0roo0roo]

more epic nerdery
http://www.stefanv.com/electronics/sanyo_eneloop.html

 

[disappoint]

Eli is right, these batteries like to be kept charged, unlike the old NiCDs. If you discharged them too far you might have damaged them. The only other thing I can think of is if they were rebranded knockoffs and not real eneloops to begin with, which is highly unlikely. In any case, get new eneloops and treat them right next time, don't discharge them too far. And don't let them get too hot while charging either. Get a good smartcharger, it's worth it.

 

[0roo0roo]

for most devices you really can't, they just won't run below a certain level for batteries.