Not to throw a wet blanket on this subject, but I keep seeing posts about "Protected" CR2 batteries. When I go to the link that shows them, no where does it say that they are protected. I don't believe that "protected" CR2 lithium-ion batts in either 3v or 3.7v are being made. Please show me one that clearly states that they are protected! The only safe CR2 that I am aware of are LiFoPO4 chemistry batts that are available in 200 and 280mAh.
PLEASE prove me wrong! I think it's very dangerous to point people to a site and tell them they are buying protected batts when they are not.
3V CR2 800Mah unprotected battery
3.7V CR2 Juice™ Batteries.
My friend,
It's me the only one here who mentioned Protected 3V and 3.7V batteries. And I was strictly talking about
Juice™ Batteries.
Fact is that like I said before, when I was searching around, I read in one of many reviews that those cells were protected ones but I cannot find this review anymore.
But I assumed that it was true, and did not do further researches on it, since i was only interested in trying those batteries, to see if they were 3.7Volts. Which they effectively turned out to be! (
Juice™ Batteries have also 3V versions)
What lead me to assume that they were protected batteries, and to not think of it twice, is the thick plastic ring over the positive end, that you never find on either unprotected cells or even ordinary non rechargeable lithium cells. (You can see that on the pictures posted earlier)
That's because I had previously read, that very high quality Lithium cell brands, which are more expensive, feature, in addition to many other demanding specifications, the use of a white plastic ring to give better shock/impact damage to the chip (PCB) and that some even use special technology, and do not necessarily put the chip on the negative end of the battery. (I'm not an expert and I might be wrong though for having misunderstood what that meant)
Besides, I can feel something like a thin strip along the side, but it is so thin that I'm not sure of anything. It could as well be a hidden part of the wrap...I don't know. And I won't tear off the battery to verify it...hehe
Anyway, the battery does neither state its voltage, nor its capacity, nor whether it is protected or not. Neither does its manufacturer or any of his dealers state anything or even its contrary, on the basic product description page.
Yet juice batteries states this in their technical manual:
"The Li-Ion (3V) battery is a more recent rechargeable system. It shows a higher operating voltage per cell than RECHARGEABLE ALKALINE (1.5V ) NiCad (1.2V ) and NiMH (1.2V) cells, which does not permit an interchange on a per cell basis. Its ampere-hour capacity is lower but the energy density (watt-hours/liter) is higher as a result of the higher operating voltage.
The Li-Ion system requires strict overcharge and overdischarge control via microchip technology for consumer safety."
That couldn't be clearer I guess.
Now about the capacity, and in another review, and like I said before, I read a person that stated that the batteries were tested as 400Mah. But although i didn't test them, and like I said before, i can fairly say that they might rather average 500 maybe 600 Mah due to a fair length of discharge time. Which is not impossible since there are now, even 800 Mah ones available here and there. But even 400 Mah at such high voltage as 3.7V and such fair length of discharge time (and I'm a heavy vaper) is good enough to invest in them.
Finally, I don't endorse neither insist on, nor guarantee any of the information provided hereby, but only mean to help, if possible. And I can be wrong or mislead.
And for what it's worth, those batteries are too expensive and I will still prefer to go for the time being, with the more accessible 3.7V unprotected CR2s found on E-Bay. I don't know if it's wiser, but it's a lot cheaper.
hope that clarifies it.
