Question about TENERGY LIFEPO4 RCR123A

[Jason365]

The specs for this battery say "Please never overdischarge battery below 2.2V/cell"

So when I run these in a 6v mod, do the cells get below this 2.2v per cell? I am pretty sure 4.4 v would vape pretty well.

Yeah, im lazy and have not put a meter on them, and I just thought about it and don't have a meeter on me.

Anyone with experience with these know any thing?

Jason

 

[Bogalu]

I've used them for a LONG time and have never had any problems with them. I also never ran out of life with them either (I have a regiment of using fresh batteries in the morning then replacing them with more fresh batts when I got home from work and let the old ones charge back up and keep the cycle going.) Never had a problem with them so hopefully I helped.

 

[j0ker]

Once the battery reaches the low volt cutoff, the protection circuit on the battery prevents any more discharge. So you have 2 batteries, the batteries cut off at say 2.3 volts and one battery has 2.8 and the other has dropped to 2.3 volts. The battery at 2.3 volts cuts off leaving only the battery at 2.8 volts. In other words, when the battery reaches the cutoff, you no longer have any input from that battery. If both reach the cutoff at same time, you have no volts.....hope that helps.

 

[Dkrom68]

I believe they actually have a cut off in them to prevent over discharging. Someone correct me if im wrong

 

[panderson01]

I've never had mine go down to 2.2. When I check them, they end up around 2.9, 2.8, or somewhere around that.

Like I said, when I check them. When I notice a dramatic reduction in vapor, I change them out, and the few times I have checked them, that's about where they are at.

It seems that once they drop under 3v, they don't have enough to get anything done.

Paul

 

[doots]

You will know when the vape drops and then is when you should replace the battys..

 

[panderson01]

I do recommend that you get a multimeter, it will help when troubleshooting problems when you are trying to determine if a problem is caused from a battery, atty, or other.

You can generally get one for under $5 at Harbor Freight, if you have one close by.

 

[Jason365]

Ok, I did not know that they had protection built into each cell. Makes me feel better. and It was listed on the specs. Duh.. "Charging cut-off voltage: 3.6V and Discharge cut-off voltage: 2.2V"

And I do know I get 1 or 2 puffs when I sense they are low and then they completely stop making vapor.

I have had no trouble with these batteries either I was just curious, and did not want to damge them or me.

\Thanks for the info all of you.

Jason

 

[Cisco]

Ok, I did not know that they had protection built into each cell. Makes me feel better. and It was listed on the specs. Duh.. "Charging cut-off voltage: 3.6V and Discharge cut-off voltage: 2.2V"

And I do know I get 1 or 2 puffs when I sense they are low and then they completely stop making vapor.

I have had no trouble with these batteries either I was just curious, and did not want to damge them or me.

\Thanks for the info all of you.

Jason

These batteries are not protected, most LifePo's have no protection, the powers that be feel there is no need. The chemistry of these cells does not generate catastrophic failure, only venting......so they say......
Unprotected LifePo's can also fail if there over discharged or direct shorted. Every time you vape on these cells you are over discharging them. LifePo's have a nominal or working voltage of 3.2v ( not the 3.0v thats printed on the case) with a max charge rate of 3.6v. Two of these cells fully charged is 7.2v, if you do the math (Ohms law) you are draining these cells at twice there max discharge. Each cell has a maximum discharge rate of 550ma each, your asking them to output more then 1000ma each.......


These cells are way under rated for there use in e-cigs, use at your own risk.....


Good Luck, and have a nice flight.....


Cisco....

 

[Jason365]

Well if what cisco said is true, (It probably is from what I know.) What is a vaper to use?
Here is s alink to said batteries. http://www.batteryjunction.com/6rcr123a-combo.html

Any recommendations?

Cisco, what batteries do you use?

Jason

 

[BuzzKill]

They do sell PROTECTED rcr123a's @3.6 volts , NOT all 123a's are protected !
Battery junction has protected 16340 3.6v ( crc123a ) Ultrafire 3.6V 880mah Protected Li-Ion Rechargeable Battery RCR123A CR123A 16340 CR16340

I have the Tenergy 3.0 v UNprotected batts , from what I have searched there are no current failures with these batts ( Cr123a's )
The failures have been on the CR2's

Please use due diligence and do your own research !!!

 

[BuzzKill]

read this Flashlight Reviews and LED Modifications

 

[doots]

I have used these Lifepo4 tenergys since they came out a year ago, I think. Still on the same sets. Have never had a problem with them..

 

[Cisco]

Well if what cisco said is true, (It probably is from what I know.) What is a vaper to use?
Here is s alink to said batteries. Combo Kit: 6 RCR123A 3.0V 750mAh LiFePO4 Rechargeable Batteries with a Smart Charger

Any recommendations?

Cisco, what batteries do you use?

Jason

Hey Jason,


I dont vape 6v, so none of these battery problems are an issue for me. I would recommend Protected cells, they are the safest option at this point, but you do need to be aware of the risks involved in using lithium cells especially when you pair them up, even protected ones. I have tried to find some spec sheets on the common Trustfires and Ultrafires, it seems like this is top secret info, and the some of the specs I have come across are pretty low.
There are a lot of members who steer new users towards mods and recommend high voltage without any care to let them know of the potential risks involved.

There is a lot of great battery info on this forum, but, there is also 10 times more misguided info.


Cisco...

I have used these Lifepo4 tenergys since they came out a year ago, I think. Still on the same sets. Have never had a problem with them..

Never said they wouldn't work, and most people will have no problem, but according to the spec sheet you are using them above there rating.


Cisco...

 

[BuzzKill]

Cisco do you have a copy of the spec sheets ??

" Never said they wouldn't work, and most people will have no problem, but according to the spec sheet you are using them above there rating. "

I really need to see them

 

[Ralph Hilton]

Exceeding the ratings:
http://video.google.com/videoplay?docid=3690260570423705609#

 

[BuzzKill]

Anybody can plug a battery into a wall outlet and blow it up RALPH !! that was completely meaningless !!!

ANd your a vendor , are you selling protected Lifepo4 's ? man I'm glad you make juice and not power supply's

 

[cddz]

Anybody can plug a battery into a wall outlet and blow it up RALPH !! that was completely meaningless !!!

ANd your a vendor , are you selling protected Lifepo4 's ? man I'm glad you make juice and not power supply's

He is demonstrating the energy that is stored in these batteries. This was overcharging the battery. It does not matter what the source is, if it happens either way failure will result.

 

[me2cyclops]

if you over fill a water baloon slowly from the tap
will it fail the same as if it were overfilled by a wide open fire hydrant?

 

[Cisco]

Cisco do you have a copy of the spec sheets ??

" Never said they wouldn't work, and most people will have no problem, but according to the spec sheet you are using them above there rating. "

I really need to see them

There right there on the description page, its not a secret.....

• Rechargeable LiFePO4 RCR123A 3.0V 750mAhBattery
• Life cycle: 2000 times (Traditional Li-ion: 500 times)
• Never explodes or will catch on fire
• 100% Compatible with Disposable CR123A Batteries
• Working Voltage:3.2V and Peak Voltage: 3.6V
• Charging cut-off voltage: 3.6V
• Discharge cut-off voltage: 2.2V o Please never overdischarge battery below 2.2V/cell o Charge this battery with LiFePO4 RCR123A smart charger.
• Capacity: 750 mAh
• Maximum discharging rate:< 550 mA
• Maximum charge current: <550 mA
• Cell's dimension: 17mm Dia. x 34.5mm H.
• Weight: 0.6 oz (18 grams).

550ma max discharge x2 cells is 1010ma or just over 1amp discharge, a 510 @2.4ohms on those two cells fully charged will drain 3amps, even at nominal voltage of 3.2 you will drain the cells at 2.6amps



Just a tad out of spec


Do they work , Yes
Are you using them above there rating, Yes
Are you stressing them , Yes
Will they vent , its possible
Do you increase your chances of failure with dual cells , absolutely







Cisco...