Battery test, what to include?

First question: Where do I get some NCR18650 where I am sure they are original?

Second: There is 2x2900mAh and 4x3100mAh protected cells planned for the test, is it necessary to include the unprotected cells also, especially if the above cells has nearly equal performance.

There is not supposed to be much (if any) difference with break-in for LiIon cells. The test sequence will be from low to high current, i.e. when doing the 3 ampere test they have already had 4 cycles (0.2, 0.5, 1, 2).

Any comments on this header:

The trip test:

A test with 10 watt load:

Yep!

Looks great! Looking forward to the whole test.

There's the regular Trustfires( done )and the higher current Trustfires.

Then there's the Redilast 2900 mah and 3100 mah and the Callies 2900 and 3100 mah.

There's the Panasonic 2900 protected ones from Ebay that are 2 for about $ 24.

I am doing my (hopefully) last test run now and then I can start on the real test. The test will take a lot of time and I plan on publishing each battery when done.

The Flame TrustFire is not done yet, the cell I have been testing with is a year old, I have some new one lying around and they will be tested later on. They might even be the first cells tested, but that depends on when all the other cells arrives.

I have ordered RediLast 2600, 2900 and 3100.

Callies does only have 3100 and some 2250 high current cells, not 2900 cells.

What are you thinking on with "higher current TrustFire"?

And are the ebay cells from the intl-outdoor shop (They are in the mail).

A new batterie is in town - Spark built a protected 2600mAh (Sanyo inside) and presented now on their homepage. Maybe it is a good product for the test. Perhaps Spark offers you 1-2 free batteries for the test?

http://www.spark-store.com/index.php?a=47

Interesting, I will include it in my test.

Which cells from intl-outdoor.com are you going to test? I just looked on their page and they have some very interesting cells there. I would love to see a test of all the Panasonic 18650 cells and both of the 26650 cells from MNKE and Kingkong.

This test will mostly be 18650 cells, but I might look at other sizes later on.

From Hank I am expecting NCR18650A PROTECTED and Sanyo16650 PROTECTED. They can arrive any day now, they where shipped 11 days ago.

Since NCR18650A is the one I'm most interested in that's just going to have to be good enough. ;)

Thanks for all your hard work.

Sanyo 2600

Panasonic CGR18650CH 2250mah from international outdoors

Thanks for doing this and looking forward to the test results.

Im intrested in the NCR18650A PROTECTED batteries Hank at a discharge of 3 and 5 amps

I have this on order and expect to add a 7A and 10A discharge rates to the test for this cell.

I have read your test of it and am very curious if it is a general problem with his cells or if you just was unlucky.

Im pritty unlucky, but i guess your test will be effected if the PCB,s only have one mosfet in them.

The number of mosfet's does not have to be a significant factor, you can get mosfet's in many qualities and one good mosfet can be better than two cheaper mosfet's.

So true but what quality do you think your going to get for $1.99 usd installed with wrapper, label and one mosfet, including some ones time to weld it and put it all together ?

Like i said im pritty unlucky but it would be nice if more people could test these protected ones with discharges higher then 1 amp.

Mine took 16 days to get here to Australia, so yours should be there any day now to test and im sure they will be fine.

There are definitely fet's and fet's!

Must have thousands of the critters in various ESC 's and they get a good hammering in electric powered aircraft up to 12s li-po and if they are naff they zap real quick and melt plastic nicely.

As for me I would like to see something on these, might score some to checkout today after a BLF search.

http://www.manafont.com/product_info.php/protected-trustfire-18650-37v-3000mah-rechargeable-batteries-2pcsset-p-7941

M.

I saw that link yesterday and has been thinking about including that cell.

Next "problem" is prioritize the tests, in one to two weeks I expect to have a large pile of LiIon cells. At the current time I only have a few (TrustFire and UltraFires) and Callies that is testing at the moment (The intl-outdoor will be tested when I receive it).

I expect to be running the test equipment continuous for the next few months, producing one to two test/reviews each week.