Protected Battys in Protege

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a2dcovert

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Ok let me rephrase a lot of cheaper products really lack good quality control. Different companies get their products from the same manufacture with different different specs and quality control their own products. I am sorry if I offended you but IN MY OPINION most China cheaper products you get what you pay for. I order them also and thus my frustration and sorry if I came across like I was dogging them or Lucky.

I wasn't offended by anything you said. I'm simply offering my experiences to be helpful to others. The quality control from the products from DX concerns my because if they overlook DOA products getting past their QC what other mistakes are they overlooking. Lithium batteries are very fragile and can fail in very dramatic fashion like fire and explosion. The prices at DX are hard to pass up but sometimes you get what you pay for.

Kevin
 

kardjunkie

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I wasn't offended by anything you said. I'm simply offering my experiences to be helpful to others. The quality control from the products from DX concerns my because if they overlook DOA products getting past their QC what other mistakes are they overlooking. Lithium batteries are very fragile and can fail in very dramatic fashion like fire and explosion. The prices at DX are hard to pass up but sometimes you get what you pay for.

Kevin

I agree. I have had similar frustrations with DX. Thing is the cheap prices just keep me coming back but at least I know it's a crap shoot, some people don't realize it till their hard earn money is wasted. Never thought about the safety issue and you are right on the mark, especially using them in a product so close to our faces!

The safety issue I was referring to is the lack of quality control and what could go wrong from that not the safety of using unprotected batteries.
 
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lotus14

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It was my understanding from a post Steve made that even though the batteries are unprotected, the charger IS protected and that should alleviate the problem. Is this not correct in your collective opinions?

I sure don't want the thing exploding in my face!! {{trembling with fear}}

Yes, the chargers are protected from over charging.

Also from this link by ad2covert:
All-Battery.com - Rechargeable batteries & Chargers - Li-Ion Cylindrical Rechargeable Batteries

If you scroll down and check out the Tenergy 14500, which appear to be identical to the ones that come with the Protege, the product specs say

Product Specifications:

  • Capacity: Nominal 900 mah
  • Dimensions: 14Dx49Hmm
  • Weight (Typical) Approximate.21 g
  • Nominal working voltage: Average 3.7V
  • Peak Voltage: 4.2V
  • Discharge Cut-off Voltage: 2.75V
  • Internal Resistance: <80 mOhm
  • Cycle Performance: 85% of initial capacity at 300 cycles
  • Cycle life: > 300 cycles
  • Max. Charging current: 1C ma
  • Max. Discharging current 2.5C ma (for continuous discharge)
Note the "Discharge Cut-off Voltage."

I'm quite sure anyone vaping will notice the drop in performance and switch batts long before they get down to even 3.2v. As for traveling, you'd have to leave one of these lying around for a loooong time to allow it to discharge completely. I would NOT leave one for days in the cold however.
 

a2dcovert

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It was my understanding from a post Steve made that even though the batteries are unprotected, the charger IS protected and that should alleviate the problem. Is this not correct in your collective opinions?

I sure don't want the thing exploding in my face!! {{trembling with fear}}

I don't think you have anything to worry about. The battery inside the protege should be unable to cause harm to you or the protege.

I like the protected batteries because they help prevent damage to the battery from both over charging and over discharging. Either one can damage the battery chemistry.

Most fires and explosions happen during the charge cycle.

Kevin
 

lotus14

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Am I missing something, or are there no 14500 protected batts at all-battery.com?

Protected batts in the smaller sizes are hard to find. 99% of the ones in use are unprotected. That should tell you something about the actual risk involved with unprotected batts. Use a good charger and quit worrying about it!
 

nevergonnaleavetn

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I have read some good things about this brand of battery but I can't find it in 900mah. This one is protected but only 750mah. It also is not cheap, but sometimes you get what you pay for.

AW 14500 Protected Rechargeable Lithium Battery

Maybe someone with better research skills than me can find it in 900mah. Please let us know if you do.
 

lotus14

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Well geez! No need to get snippy!:D

Oops, sorry about that! :oops:

I just don't think it's that big a deal. I'm going to try out the ones it comes with, and then just get a couple of spares just like 'em.

I REALLY don't think Steve is selling anything that's going to blow up in his customer's faces. Might be kinda bad for business. ;-)
 

KonaNeil

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I've been reading about these batteries in other fields after hearing that they can explode violently.

I think most of us use TrustFire chargers or other branded chargers that look identical and probably are. From what I've read, once 4.2V is reached they continue to trickle charge to the battery. I've seen chatter from model airplane enthusiasts saying that this can be dangerous with protected and unprotected batteries and that we should stop the charger as soon as the light turns green. Some suggest more expensive chargers that completely shut off charging once the proper voltage is reached.

I am hoping that someone with more battery experience can assure us that if we maintain proper battery handling and don't overcharge or over deplete that these won't explode or cause a very hot fire.

Regarding the AW batteries lower Mah; I've read that AW rates their bats more conservatively than others.

Regarding DX; I too buy from them. It occurs to me that should there be an explosion, DX in Hong Kong would not likely be legally responsible while a US seller would.
 

nevergonnaleavetn

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Yes they do, I have some, but the ones I recently got, same sku, are longer and barely fit.


Thanks.
I like to keep all my batteries in those plastic holders. I messed up alot of nimh batteries years ago because I would just dump them all in a bowl waiting to be recharged. After throwing away half of them without much actual use, I discovered it's not good for the ends to touch each other or other metal objects. :(

While I'm sure most people know this by now with rechargeable batteries, newbies take heed.
 
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