Protege Venting / Safety

[Pyriel]

LiFePO4 cells may not be as safe as you think they are.

From the batteryspace website
Part Number: LFP-6.4V0.8Ah-18500

Product ID # 1968

• 6.4V 800mAh LiFePO4 Li-Ion rechargeable battery Module is made of 2 pcs LiFePo4 800 mAh cylindrical 18500 cells in 2S connection.
• Shrink wrap and pack in side by side in a series configuration
  • 
    [*]One PCB (5A limited) installed with the battery pack and protects the battery from
    
    • 
      [*]Overcharge (>7.7V)
      [*]Over discharge ( <4.46 V)
      [*]Over drain ( >5 Amp)
      [*]Short circuits
    
    [*]One 4.2 Amp polyswitch installed to limit max. discharging current and to protect wrong polarity

Thats alot of protection for a battery that won't catch fire, or explode.

Note, I can't post link yet, but I did give website name and part number. They have alot of the so called safe batteries with this much protection.

 

[Pyriel]

BTW... I have a protege on the way, and was thinking about the venting issue. A hole drilled into the end cap, sealed with a rubber plug that would be easily dislodged by a battery failure, might be the end all to the problem.
I don't believe lithium batteries only explode from user error, it is possible to get a battery that has issues from the factory, and I do worry some about a protege frag grenade.

 

[BrockJ]

wrong thread...

I hate it when that happens.......

 

[EcA2AcE'S Nicole]

wrong thread...

I hate it when that happens.......

Me too! I have done it myself.

 

[timothymass]

use protected batteries and you wont have to worry about it. I have been using my protege for months without any problem so have multiple vaping buddies i know who also have the protege

 

[Pyriel]

use protected batteries and you wont have to worry about it. I have been using my protege for months without any problem so have multiple vaping buddies i know who also have the protege

Protected batteries won't save you from a factory reject (battery). Would feel a lot better if I seen a protege that had a failed battery, that had vented through the switch and not fragmented. Not sure the switch will allow that much pressure to escape. When mine comes in, I will unfortunely have to take the drill to it, I won't trust a PV that doesn't have a vent.

 

[BrockJ]

Protected batteries won't save you from a factory reject (battery). Would feel a lot better if I seen a protege that had a failed battery, that had vented through the switch and not fragmented. Not sure the switch will allow that much pressure to escape. When mine comes in, I will unfortunely have to take the drill to it, I won't trust a PV that doesn't have a vent.

Make sure to post some pics of the venting job..

 

[buGG]

Protected batteries won't save you from a factory reject (battery). Would feel a lot better if I seen a protege that had a failed battery, that had vented through the switch and not fragmented. Not sure the switch will allow that much pressure to escape. When mine comes in, I will unfortunely have to take the drill to it, I won't trust a PV that doesn't have a vent.

i thought the risks came from using batteries in series, not a single cell application like the 14500 in the protege. there's so much battery information, misinformation, and commentary on these forums (not speaking about this thread-- just in general) i'm not exactly sure whether the single cell vs. series risks have been resolved. but, personally i haven't heard or come across any threads that have posited single cell applications, protected or unprotected, as a problem.

also, the drilling idea sounds cool and if you do it i'm with brock--take pictures! but, if, after taking a look at other threads and talking to anyone else more knowledgeable about batteries and the risks of single cell applications, you're still worried about the protege's venting capabilities...why not send it back for a refund? why bother to drill it? get a unit that you feel will vent sufficiently from the start. i still wholeheartedly recommend the protege, but i if you feel the need to drill you might not really want the protege to begin with.

but hey...if you're doing it anyway...take pics

buGG

 

[tattooed]

I wonder why there aren't more panic threads concerned with laptop or cell phone batteries? The cases of these sorts of battery failures are all pretty rare, I don't see why everyone gets so worked up about it. Use common sense when dealing with batteries regardless of what you use them in and you should be just fine.

 

[markarich159]

Thats alot of protection for a battery that won't catch fire, or explode.

The battery you're referencing is a multi-cell battery module(in this case 2 cell). Multi cell Lithium batteries are inherently more unstable and require a PCB circuit to manage the minor inconsistencies between the cells that can cause problems you don't see in single cell batteries.

All of the batteries(that I'm aware of) used in e-cig mods are single cell.

 

[FrogHat]

If your going to be drilling a hole, I would strongly suggest that you try to find a wooden dowel that fits nicely in the tube so the pressure you apply doesn't do any damage.

Just a suggestion.

 

[BrockJ]

If your going to be drilling a hole, I would strongly suggest that you try to find a wooden dowel that fits nicely in the tube so the pressure you apply doesn't do any damage.

Just a suggestion.

Well.... not to mention the fact that it's stainless steel. Stainless aint like aluminum when it comes to drilling. You'll need a press, something to hold the endcap with and a cooling fluid for the bit and endcap. (You could submerg it in water). If you're drilling the body, Wow!! Definately like to see pictures of that. Ditto on the wooden dowel (at minimum)
Stainless tends to skate around a lot and burn bits up.

 

[redrhino]

I wold love to see the pictures of that as well...Please post them if you decide to do it...