6 months LSD Ni-Mh test results (many batteries, more to come)

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flash.light
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Thank you for your measurements from your post – which you’ve basically ignored SINCE MAY 2012 – ? (a coupla’ posts in Oct. and then now?)

StorminMatt][quote=fran82 wrote:
In my opinion, non-LSD is recomendable when you need… let´s say 2700mAh and you are going to use the batteries the next day after charging, or the other… not 1 month after…. obvious….
ezarc wrote:

Have you done 1000mA discharges of the others as well?

Yes, and PLEASE give us BLF’ers some pic’s of your dmm measurements fran82, ok? Smile and also please let us click on:

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vēer
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Hehe, flash.light wont give up :D!

Ok, fran82, do you have some fresh data to share with us, Id be curious to see how those cheapo LSD’s hold up with time!

fran82
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Hi, vêer. hmmm….

About the cheap LSD (BTone) no more tests, I did 6 months LSD tests and I have been using all of them, I will not test any more of the BTone ones… they are good at least for 6 months, more than 6…. I will prefer Eneloop for that.

However, the only batteries that I have for LSD testing in this moment are the Genuine Eneloop 2nd gen.

I have 2x AA eneloops which in a few days they will have been 6 months without use. (exactly on 16-dec it will be 6 months)

I have been monitoring the voltage, and the Genuine eneloop are performing much better than the BTones. But just measuring the resting voltage.

I have a total of 6x AA genuine eneloops, and I was thinking into taking 2x of them and doing a 6 months LSD test, then another 2x more to do a 12 months LSD test and the other 2x for a 24 month LSD test… because I dont use the eneloops, I use the Btones…

I dont have data about the remaining capacity, because, for doing that, I have to take the Imax and discharge them.

However I have been measuring the resting voltage…. do you want it?

2x Genuine eneloop AA. Last time charged: 16-06-12. Voltages:

Recently charged: BAT1 – 1.445 BAT2 -1.451
After 1 week: …… BAT1 – 1.368 BAT2 – 1.366
After 1 month: …. BAT1 – 1.354 BAT2 – 1.355
After 2 months: … BAT1 – 1.336 BAT2 – 1.334
After 3 months: … BAT1 – 1.330 BAT2 – 1.331
After 4 months: … BAT1 – 1.327 BAT2 – 1.326
After 5 months: … BAT1 – 1.323 BAT2 – 1.325
After 6 months: … Still not measured (16 december will be 6 months)

I was thinking into doing that, 2× 6 months, the other 2× 1 year, and the other 2× 2 years…

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Chicago X
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flash.light wrote:
Yes, let's see what happens! :-)

Where in the US are you located?

http://wardogsmakingithome.org/index.html

War Dogs, Making it Home - Rescue Dogs for Returning Vets

fran82
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Ok, a little update, I was very busy…

I finally measured the resting voltage of the 2 first genuine eneloop after 6 months (ok, this is not the way to measure the LSD capabilities, only FYI). The final voltage measurement finish as this:

2x Genuine eneloop AA. Last time charged: 16-06-12. Voltages:

Recently charged: BAT1 – 1.445 BAT2 -1.451
After 1 week: …… BAT1 – 1.368 BAT2 – 1.366
After 1 month: …. BAT1 – 1.354 BAT2 – 1.355
After 2 months: … BAT1 – 1.336 BAT2 – 1.334
After 3 months: … BAT1 – 1.330 BAT2 – 1.331
After 4 months: … BAT1 – 1.327 BAT2 – 1.326
After 5 months: … BAT1 – 1.323 BAT2 – 1.325
After 6 months: … BAT1 – 1.321 BAT2 – 1.321

Now, I will do the discharge test to see what is the remaining capacity. Results tomorrow at noon….

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fran82
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ok. I updated this info in the first post of this thread.

Finally the 6 months LSD test of the GENUINE Sanyo Eneloop second generation has been done.

The results, make me think 2 things. The first one, that the old Eneloop I have, or they are not Genuine, or they are first gen, because they show higher capacity and better LSD results than the Genuine second gen. The second thing, is, that BTone batteries are not bad at all, at least if you want them to retain the capacity on the six first months. I have not tested the BTone for more than 6 months, but, I think that above 6 months, the Genuine Sanyo Eneloop 2nd gen will perform a lot better.

The results are:

8 ) Genuine Sanyo Eneloop 1900mAh (second gen)

link – ebay USA seller

FYI, no load voltages were:

1, 2, 3, 4, 5 and 6 months (1.355v, 1.336v, 1.331v, 1.327v, 1.325v, 1.321v)

Measured capacity

Cell 1 = 1785mAh
Cell 2 = 1794mAh

Remaining after six months

Cell 1 = 1582mAh
Cell 2 = 1590mAh

So it has about 88.6% of it´s capacity still available after 6 months.

My (perhaps) premature conclusion: BTone 2100mAh, has higher capacity than the genuine Eneloop 2nd gen. But on LSD, the Eneloop seems a bit better, at least after 6 months. I beleive that, above 6 months, the Sanyo Eneloop will be better than the BTones.

I will leave another 2x genuine Eneloop for a 12 months LSD test and another 2x Genuine ones for a 24 months test

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fran82
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Today I received more batts to test

This time Genuine Sanyo Eneloop XX (pack of 4) from DX. I think they are genuine, they have the sanyo hologram sticker and the positive and negative pole are similar from what I have seen over internet.

http://dx.com/p/genuine-sanyo-2500mah-ni-mh-rechargeable-aa-battery-blac...

I still have not opened the package. Still to do the discharge test from factory + the 5 cycles + the LSD test (6 and 12 months)

Will update asap Wink

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leaftye
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I just did a refresh cycle on three of my 2700 mAh Sanyo's, and I got 969, 1576, and 962.   I should discard these as their self discharge is so high that I can only trust them if I use them straight out of the charger.  They're worse than my 12 year old Rayovac's.

The low mode should be lower.

fran82
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wow!. I think that they will be ok only for “testing flashlights”… I mean, imagine you receive a new flashlght and you want to test it… so take them, recently charged obviously, and you have it…

another issue: due to the age and heavy usage I think you have forced them, I think that not only the capacity will be low, also the “ability” to deliver high currents… making flashlights dimmer than they should be… who knows…

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fran82
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Hi, sorry for the late reply, I was busy…

Finally, I have the capacity results of the genuine Eneloop XX . I was especting good results, but not as good results as the white eneloop, as I have read in other sites…

http://dx.com/p/genuine-sanyo-2500mah-ni-mh-rechargeable-aa-battery-blac...

Manufactured on June 2012. Tested on March 2013 (9 months since the factory charge)
.

Voltages (no-load) from factory

Cell 1 – 1,289v
Cell 2 – 1,289v
Cell 3 – 1,289v
Cell 4 – 1,289v

First discharge (charged from factory), down to 0.9volt @ 0.5A discharge

Cell 1 – 1039 mAh
Cell 2 – 1009 mAh
Cell 3 – 983 mAh
Cell 4 – 1010 mAh

(I was especting these low readouts… the XX eneloop are not as good as the white eneloop in LSD and voltage sag)

Now second charge/discharge, charged 0.5A and discharged again, down to 0.9volt 0.5A discharge (as always)

Cell 1 – 2339 mAh
Cell 2 – 2335 mAh
Cell 3 – 2328 mAh
Cell 4 – 2330 mAh

Now I will try to do 2 cycles more, but I think I will not get much better improvement…
Then, 6 months later, the first LSD test from 2x of them, and 12 months LSD test from the other 2x cells.

My preliminary conclusion is, that, they are not as good as the white eneloop if you want a good LSD battery, and the XX have a big voltage sag under load than the white eneloop.

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