Keeppower 17500 test

[325addict]

Now that AW is out of business and my 10 years old AW 17500s slowly started to develop issues, it was time for some new protected 17500s... but that was easier said than done!

Finally I found the Keeppower protected 17500s with 1200mAh advertised capacity. OK, here we go!

- Charged two of them to 4.197V
- Discharged them both, separately over my capacity meter with 450mA discharge current until the protection kicked in.
- Results: 1238mAh and 1240mAh!! That's MORE than advertised, even with AW I didn't have that! (Note: with the SAME meter).:thumbsup:
- at 50% of the discharge, cells had 3.61V

So, to sum it up: a higher discharge capacity than advertised and VERY balanced performance (just 2mAh difference).

Although these batteries are bit longer than the AW ones, it was no problem at all to load them into my C3 Centurion with original P90 lamp assembly.

There's just ONE thing that worries me a bit: the AW cells had a steel plate as a minus pole, here it looks like a piece of PCB with maybe 35 microns of copper. The spring of a Surefire tailcap may very quickly eat itself through this thin layer of copper. Only future will tell....

But, so far, so good

 

[thermal guy]

Really wish they could bring the capacity of this cell up. A 16650 is WAY ahead of this. Guess there's not much use for them but I'd love them for my 3 cell SF's.

 

[325addict]

Really wish they could bring the capacity of this cell up. A 16650 is WAY ahead of this. Guess there's not much use for them but I'd love them for my 3 cell SF's.

Indeed, volumie-wise a 17500 cell should be capable of doing more than this. But hey, we can HAVE at least guilt free Lumens in our 3-cell SF lights! We can actually start to USE them... without worrying about those 3 expensive primaries, through which it will eat itself in an hour...

Here, the standard lights from Wolf-Eyes are better: they can accomodate 18500s... while most of them accept 18650s. I have several Wolf Eyes lights and I must say, I'm impressed by these, but that's a whole new story and completely off-topic so I'll shut my mouth