They aren’t. My question is: what exactly are these? The wrapper say INR. Supposedly that is Lithium Nickel Cobalt Aluminium Oxide (or Dioxide - not sure). I know nothing about the claimed level of safety (or safe discharge/charge rates) of this chemistry.
So... I'll just go ahead and order a few for testing. I'm such a sucker for new cells. :p
They are quite more expensive than the MNKE on the same shop, and I see a line crossing the battery from + to -, but I can't tell you wether it is the protection or not.
On the second picture on the link, if you check, you can see like a strip underneath the plastic packaging, just over the text on the label.
That’s funny, because I don’t see any sign of one. You realize that’s the positive end in the Int’l picture, right? Not to mention that every protected cell they sell they also offer unprotected. There is no option on the page for a protected/unprotected KK 26650.
I went through my old results and I have to correct my lousy memory. I apologize. Here's what I got at 3A:
MKNE 3900 - 4000mAh (only discharged them once - sold them with a light)
Batteryspace: 3600mAh - 3850mAh (with a few cycles)
Bestinone.net: 3300mAh - 3400mAh (and trending up with each cycle)
I hooked up the test rig tonight and hope to be doing some new tests and can't wait to get these!
It's not protected, through a DMM it does not cut. I made sure i just tapped it and let go immediate. Protected cells cut very fast, minimal sparks also.
I would like to know how to do the discharge test for my protected pana NCR18650A from NTL-Int, a friend will do it for me as I do not have an RC charger.
Would you let me know what parameters are to be placed on the charger to do it?
Your friend would be able to cycle through the options and see the discharger option. Just select maybe 1 to 3 amps and then select the ending voltage, that is all.
Most will have voltage settings for LiFe cells (can't remember off the top of my head, as I never use it myself, but it'll be 3.6 or 3.7v CV), a setting for LiCo/LiMn cells (4.1v) and a setting for LiPo packs (4.2v). Most modern LiCo/LiMn cells can actually be charged to 4.2v without any issues, though the 4.1v setting would tend to make the cells last longer with little loss of stored energy.
Some higher end chargers also allow you to fine adjust the preset CV values, whereas cheaper chargers will have entirely fixed presets. For instance, the iCharger range of hobby chargers will allow the LiPo setting to be adjusted up to 4.30v, allowing you to use more of the potential capacity of some of the newer Samsung and Sanyo li-ion cells that have peak CV values of 4.30 and 4.35v.