i found them! 3V CR123a PCB

[funkybozu]

Whats the cheaper of the bunch?

I sound like my father lol.

the 3V unprotected types like the ones posted by Crash are gonna be cheaper, since you can get them pretty easily


around 4$ for the protected type is the cheapest i found
i really dont see the point of buying the unprotected 16340s though
unlike the CR2s you can get a PCB with them so buying them without
doesnt make sense to me

 

[joedirt]

NEVER, never buy the unprotected Lithium Ions unless you don't mind your pocket catching on fire and/or a toxic lithium inferno, Just google some images of "laptop fire". Same exact batteries. It probably won't ever happen if you don't overcharge them, ie. always use a good Lithium charger, but who knows it you charge from USB or a pocket pack.

You can buy the PCB for like $1-$3 for overvoltage / undervoltage for the 3.7V cell or the two cell combo 7.4V, but you will have to be able to solder to the battery or make a battery tab welder.

If you ever discharge an unprotected LiIon battery under 2.5V / 2.75V / 3V (depending onthe battery) it will be permanently damaged and lose capacity.

 

[rejoice]

4 Pack RCR123A 3.0V 900mAh Rechargeable Li-Ion Battery with Smart Charger
another place

Are theses batteries protected?

 

[imeothanasis]

We have already found 1000 mah my dear, try to find bigger ones

 

[rejoice]

We have already found 1000 mah my dear, try to find bigger ones

We have found 1000 mah where?

 

[rejoice]

I found them. I think I would rather have the 900 protected batteries. I do not think the 1000 mah or protected.

 

[imeothanasis]

I found them. I think I would rather have the 900 protected batteries. I do not think the 1000 mah or protected.

Someone here found them rejoice. I dont remember where he posted but I will try to found them tomorow from my home. The internet connection here is bad. I must wait 30sec-1min for a page to load.

 

[Crash]

eBay.ie: 4x CR123A 3.0V 3V Rechargeable Battery+1 CHARGER CR123 (item 110424194978 end time 15-Aug-09 17:45:00 BST)

I really don't understand why some people are afraid to use unprotected batteries, treat them right and all will be fine.

 

[funkybozu]

as i said on the last page Crash , this thread is for PCB 3V CR123as
some of US dont really trust unprotected Batts. and there is no point since you can find them protected
and those LC Batts you keep posting are overrated. they are 240~ to 340 Mah

 

[rejoice]

Question here. Will a protected battery that gets too hot ,be any good anymore?

I had a problem with one of my magnum's and it got hot by putting the batteries in the
case. So hot that you could hardly touch them. You did not have to push the button. Now those batteries gets hot in the charger. They are the green cr2 batteries. Not sure if they are protected or not. I have thrown them out. Got the magnum fixed and now all is good.

I lost 6 batteries in all and found out that the magnum had short circuit. I cleaned it with some alcohol. The guy that fixed it said the alcohol got in the casing and there was some juice in there too. Alot of bad things happened to me while waiting for my GG to return home. This is only one of them.

 

[Crash]

Question here. Will a protected battery that gets too hot ,be any good anymore?

I had a problem with one of my magnum's and it got hot by putting the batteries in the
case. So hot that you could hardly touch them. You did not have to push the button. Now those batteries gets hot in the charger. They are the green cr2 batteries. Not sure if they are protected or not. I have thrown them out. Got the magnum fixed and now all is good.

I lost 6 batteries in all and found out that the magnum had short circuit. I cleaned it with some alcohol. The guy that fixed it said the alcohol got in the casing and there was some juice in there too. Alot of bad things happened to me while waiting for my GG to return home. This is only one of them.

If you got them of DX they're unprotected.

 

[funkybozu]

its not only DX,
the green 3V ultrafire CR2 and the non branded ones are not protected

a protection circuit will not protect from a short, it will limit the C going threw though
and as soon as they drop in voltage enough the will cut off
so you do have less chance of them going hot and nova

BTW if your batts get too hot in the charger then something is wrong
check the charger to see if it is set to 3V
secondly not all chargers are the same
do a net search to see your chargers charging current
it should not be over 500Ma current
like the Ultrafire WF138 charges at 250+- Ma

 

[rejoice]

its not only DX,
the green 3V ultrafire CR2 and the non branded ones are not protected

a protection circuit will not protect from a short, it will limit the C going threw though
and as soon as they drop in voltage enough the will cut off
so you do have less chance of them going hot and nova

BTW if your batts get too hot in the charger then something is wrong
check the charger to see if it is set to 3V
secondly not all chargers are the same
do a net search to see your chargers charging current
it should not be over 500Ma current
like the Ultrafire WF138 charges at 250+- Ma

Its not the charger. It only gets hot when batteries that was used in the short circuit magnum. I have bought some new cr2 batteries and they are not hot in charger. The short circuit on the other batteries ruin those batteries. Protected batteries is what is needed. This would not had happen if the batteries was protected.