Mobius battery

[Deleted member 46308]

After replacing the Mobius battery with a super capacitor can you safely store the battery, or does it need to be discarded?

 

[Bungus]

After replacing the Mobius battery with a super capacitor can you safely store the battery, or does it need to be discarded?

Why throw it. You can throw it anytime. I'd keep it in case I want to use Mobius as a action cam. Battery will eventually go dead of course but until then. I keep batteries I bought from my trips to Asia (very cheap there. talking cents instead of dollars here) in my fridge. Still can be use after a couple of years.

 

[Deleted member 46308]

Why throw it. You can throw it anytime. I'd keep it in case I want to use Mobius as a action cam. Battery will eventually go dead of course but until then. I keep batteries I bought from my trips to Asia (very cheap there. talking cents instead of dollars here) in my fridge. Still can be use after a couple of years.

I really do not want to discard the battery. I just did not know what steps, if any, was needed to store it. Thanks for the fridge idea.

 

[dash riposki]

It's not puffed out, Gabacho?

Damn things are so small, I took a good one out of one of my mobius to replace with a super cap, now don't remember where I put it!

 

[Deleted member 46308]

It's not puffed out, Gabacho?

Damn things are so small, I took a good one out of one of my mobius to replace with a super cap, now don't remember where I put it!

It was looking good the last time it was in sight. Someone mentioned putting these things in a fire proof bag or something like that. Makes me wonder if these things are really that volatile. Obviously, I do not have a lot of knowledge about these batteries

 

[SawMaster]

As long as they are not physically damaged they are very, very safe though not perfectly so- but then again, what is?

I'd avoid the fridge though, sometimes things get tossed in or shoved back which could provide just enough force to damage the battery and cause problems. These "pouch batteries" are intended to have some kind of protective case around them whereas a regular LIon cell or a "Prismatic battery" (like in your phone) have that protection built in. They're not delicate but these are more easily damaged. Plus if it outgasses in the fridge, you'll have a concentrated cloud of very poisonous gas the next time you open the door and that would likely render everything in the fridge inedible too. Not to mention possible damage to the fridge. As small as these are along with how they are designed, the chance of catastrophic self-destruction is very small; outgassing only slightly higher. Then again it only takes once to ruin your day. Just store it where it won't get hurt and all will be well.

Freezing or high temps are bad, fridge temps shouldn't have any effect but room-temperature storage is just as good. Lithium cells do not like to have their voltage below a certain point (varies by cell type and quality, usually around 2.5V) This will usually not destroy the battery but it will greatly reduce it's capacity and may render it un-chargable thereafter. All rechargeable batteries "self-discharge" when sitting unused due to their inherent internal resistance. LiPo's have a low "self-discharge" rate and if they are fully charged when stored, they should last at least a year or two, at room-temperature with no effect on performance. Charged twice annually they can be stored for 10+ years with almost no loss of performance.

The biggest danger with lithium batteries or cells is when attempting to charge a damaged or dead battery- things can go bad in ten seconds or less then and removing the current may not stop it (thermal runaway). Should you ever be so unlucky, get the cell onto a fireproof surface (preferably outside) right now and stay upwind. Ideal is to drop it into a bucket of sand (wet or dry). With a thermal runaway it will be hot and getting hotter than a blowtorch very fast and the chemicals being released can burn you badly even if the heat doesn't. Again, as small as dash-cam batteries are you have a lot more safety margin and a thermal runaway will end quickly, but burns are still possible. Almost everything you ever wanted to know about batteries of all kinds can be found here:

http://batteryuniversity.com/

Phil

 

[Deleted member 46308]

As long as they are not physically damaged they are very, very safe though not perfectly so- but then again, what is?

I'd avoid the fridge though, sometimes things get tossed in or shoved back which could provide just enough force to damage the battery and cause problems. These "pouch batteries" are intended to have some kind of protective case around them whereas a regular LIon cell or a "Prismatic battery" (like in your phone) have that protection built in. They're not delicate but these are more easily damaged. Plus if it outgasses in the fridge, you'll have a concentrated cloud of very poisonous gas the next time you open the door and that would likely render everything in the fridge inedible too. Not to mention possible damage to the fridge. As small as these are along with how they are designed, the chance of catastrophic self-destruction is very small; outgassing only slightly higher. Then again it only takes once to ruin your day. Just store it where it won't get hurt and all will be well.

Freezing or high temps are bad, fridge temps shouldn't have any effect but room-temperature storage is just as good. Lithium cells do not like to have their voltage below a certain point (varies by cell type and quality, usually around 2.5V) This will usually not destroy the battery but it will greatly reduce it's capacity and may render it un-chargable thereafter. All rechargeable batteries "self-discharge" when sitting unused due to their inherent internal resistance. LiPo's have a low "self-discharge" rate and if they are fully charged when stored, they should last at least a year or two, at room-temperature with no effect on performance. Charged twice annually they can be stored for 10+ years with almost no loss of performance.

The biggest danger with lithium batteries or cells is when attempting to charge a damaged or dead battery- things can go bad in ten seconds or less then and removing the current may not stop it (thermal runaway). Should you ever be so unlucky, get the cell onto a fireproof surface (preferably outside) right now and stay upwind. Ideal is to drop it into a bucket of sand (wet or dry). With a thermal runaway it will be hot and getting hotter than a blowtorch very fast and the chemicals being released can burn you badly even if the heat doesn't. Again, as small as dash-cam batteries are you have a lot more safety margin and a thermal runaway will end quickly, but burns are still possible. Almost everything you ever wanted to know about batteries of all kinds can be found here:

http://batteryuniversity.com/

Phil

@SawMaster thanks for that detailed explanation and link. That exlains a lot, I appreciate it.