New safer battery for ecigs/PVs?

[Bullette the Cowdog]

Not sure where to post this. mods please move if you think you should.

This new (at least new to me) battery is so exciting, it will probably be my reason to buy my first mod. Now the question is can I buy just 2 or 3 of these batteries as I can't use 10,000 of them. LOL

See below:

Leyden Energy

Leyden Energy's 18650 cylindrical cell is engineered using patented lithium imide electrolyte platform. This results in a battery cell which can operate and charge over a higher charging temperature range than conventional Li-ion cells. This lends itself to longer cycle life and calendar life and an unparalleled safety level for your application. To put it in numbers, our 3.7V Li-ion 18650 battery has a 2200mAh capacity with a cycle life over 1000 charge/discharge cycles - even when operated in environments with temperatures ranging from -30°C (-22°F) to 60°C (140°F) with relative humidity levels up to 95%.
Specifications

Nominal Voltage: 3.7V
Nominal Capacity: 2.2Ah
Core Cell Weight: 43 grams
Operating Temperature: -30°C (-22°F) to 60°C (140°F)
Charging Temperature: 0°C (32°F) to 60°C (140°F)
High Cycle Life: >1000 Cycles (100% DOD)
High Calendar Life: >3 Years (Calculated)

I look forward to input from you veterans out there.

 

[scalewiz]

Looks promising; didn't see anything on their site about the battery's 'C' rating. The C rating determines how much current the battery can take during charge or discharge. One thing that makes the IMR type batteries great for vaping is that they have a very high C rating for discharge; high currents can be taken from them safely.

If the ratings on this battery are good enough for safe vaping current needs, I'm sure they will soon be making an appearance.

 

[Baditude]

No button top. Can't use'm in my mod.

 

[Bullette the Cowdog]

Looks promising; didn't see anything on their site about the battery's 'C' rating. The C rating determines how much current the battery can take during charge or discharge. One thing that makes the IMR type batteries great for vaping is that they have a very high C rating for discharge; high currents can be taken from them safely.

If the ratings on this battery are good enough for safe vaping current needs, I'm sure they will soon be making an appearance.

Gee. Thanks for your input, scalewiz. Didn't know about C-ratings. What do we need to look for in a C-rating for our vaping needs? Is it a number or a letter? Or I guess I could just go to battery university & study up some more. I'm gonna be an electronics wiz soon. LOL

 

[Rocketman]

no C rating info that I could find, but they are available in laptop packs a little over $9 a cell (8 cell pack @$65) and in electric bikes. Sounds like a capable cell.

 

[Bullette the Cowdog]

no C rating info that I could find, but they are available in laptop packs a little over $9 a cell (8 cell pack @$65) and in electric bikes. Sounds like a capable cell.

Pretty expensive. But if they last 3 years & 1000 cycles, it would be worth the cost.
BTW. An old post by Rolygate here on ECF says for PVs the c-rating should be minimum 4-C. Still not sure I understand that.

 

[Rocketman]

The cost of the Li-imide laptop packs is about $10 more than regular packs.
Maybe they will show up in the laptop rebuilding scene like other cells.
So single cells could end up priced at about a $1.50 more than comparable cells in the future.

Something to watch.

 

[betaalex]

An old post by Rolygate here on ECF says for PVs the c-rating should be minimum 4-C. Still not sure I understand that.

it' quite simple actually. 1C corresponds to discharge current (numerically) equal to battery's mAh rating, 2C - twice that, 3C - 3 times, etc.

Example:
for a 1600mAh battery (like AW 18650)
1C - 1.6A
2C - 3.2A
3C - 4.8A

but for 700mAh battery (like AW 18350)
1C - 0.7A
2C - 1.4A
3C - 2.1A


Current generation IMR cylindrical batteries used in ecig MODs are typically manufacturer rated to be safe (in the sense that they won't explode) at 6-8C but if u want longevity as well - it's recommended to keep discharge rate at 2-3C level. For ICR batteries it's 2-4C and 1C accordingly.


In a VV unit like Provari current draw from battery can be as high as 5A (at the end, when battery is almost empty) and from the numbers above you can see that this worst case scenario corresponds to ~3C discharge rate for big 18650 batteries (pretty safe and no real stress on the battery) but for small 18350s - that's ~7C and is really difficult for that battery.

So size really matters after all!


PS: For example 18350 EH brand IMR batteries (sold at MadVapes for example) have 6C rating (claimed; but who knows what the actual rating really is) so I wouldn't risk using them in a Provari Mini at max. voltage setting (but they should be OK at lower voltages.)

 

[steved5600]

No button top. Can't use'm in my mod.

I ran into that on another battery. My Provari did not like that type of top. I was able to create a button on it but most folks do not have the equipment to do that.

 

[sej016]

To make a top button just use a small neodymium magnet. Like these:

50 Strong Neodymium Magnets 6x2 mm N52 Strongest Grade reborn craft 6mm x 2mm | eBay