"Protected" lithium cells

[jd]

Hi,

We are designing a rechargeable version of a product.

Has anyone used "Protected" li-ion cells in "professional" applications?
I can't seem to find much technical data. (Temperatures, protection
requirements, lifetime. UN Certification requirements?).

There are dozens of scary sounding consumer brands:

http://www.amazon.co.uk/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=18650+protected

"Trustfire", "Ultrafire".... so *Not* the name I want to see on a
lithium battery.

Thanks

John

[Akra]

Sry, i have no technical data for this cells,

but be aware, you get what you paid for.
This "Ultrafire" etc. Brand Cells are mostly china fake ones.

Just enter the names in Youtube for example and you can see many tests of this products and how bad they are.

[dexters_lab]

yea, anything that has ultrafire on it will probably be some kind of fake or be of poor quality

try Xtar, well respected in the vaping community, they sell panasonic cells with protection. I use them myself

they are sold through a number of EU official distributors so should have relevant certs

http://xtar.de/