Batteries for IPV3-LI

[Mooch]

I have 2 40 amp 18650 battery. I believe I got it from cuecig.com. they are vamped vapor cells and I run them in my snow wolf. Never get near 200w though.

There are no 18650 batteries with a genuine rating over 30A! | E-Cigarette Forum

 

[skrymir]

You can't put a li-po pack in there

Good to know.... what about these?

Polymer Lithium Ion Battery - 18650 Cell (2600mAh) - PRT-12895 - SparkFun Electronics

They say their "Polymer Lithium Ion" batteries.

 

[josh w]

There are no 18650 batteries with a genuine rating over 30A! | E-Cigarette Forum

Yes. We've established this...again.

 

[Mooch]

So I was reading Mooch's blog re: battery safety trying to find a good set of batteries for the IPV3-LI I just bought online (my reward to myself for going from a dual user to only vape... been a week!)

Looking at the specs I found online it says the max output from the mod is 45A (!!!!?) which basically puts any batteries that I can find out of contention for use, especially since with the 200w upgrade the max output will likely be higher still.

Based on Mooch's comments I'm stuck between either the VTC4 or the HB6 which could work depending on how I use the mod. I was hoping to use the Samsung 30Q so I could have the higher capacity but it looks like they aren't a good fit. On one site they suggested the 25R's but based on Mooch's tests they wouldn't work either (both fail at 30A).

So my question is what are the best batteries for this mod (or any 200w mod for that matter)? What batteries do other people who have the IPV3-LI use?

The output of the board inside that mod is 45A because it might be putting out 3.67V at up to 165W (165W / 45A = 3.67V). But, the current coming from the batteries will still only be 165W / 6.4V = 25.78A maximum (assuming 6.4V cutoff).

What is the lowest voltage the IPV3 Li will handle before saying low battery? That will determine what the max current is drawn from the batteries. 25R's will be driven quite hard at max watts but might be OK.

 

[Mooch]

Yes. We've established this...again.

A lot of people don't know why there aren't batteries available at over 30A and would appreciate the extra information. It was a reply to you because you were the first to mention that battery in this thread. But, others did address that rating as not being genuine so I'll just post it as a separate message next time in a similar situation.

 

[SomeTexan]

That post wasn't directed directly at you. A lot of people don't know why there aren't batteries available at over 30A and would appreciate the extra information. It was a reply to you because you were the first to mention that battery in this thread. But, others did address that rating as not being genuine so I'll just post it as a separate message next time in a similar situation.

I appreciate your battery tests and knowledge even if some do not. Post away Mooch Man!

 

[skrymir]

The output of the board inside that mod is 45A because it might be putting out 3.67V at up to 165W (165W / 45A = 3.67V). But, the current coming from the batteries will still only be 165W / 6.4V = 25.78A maximum (assuming 6.4V cutoff).

What is the lowest voltage the IPV3 Li will handle before saying low battery? That will determine what the max current is drawn from the batteries. 25R's will be driven quite hard at max watts but might be OK.

Searched high and low and can't find the low voltage cut off for IPV3-LI. I may have to wait until I get it or get the information or see if someone else who has one can get that spec for me.

 

[josh w]

I appreciate your battery tests and knowledge even if some do not. Post away Mooch Man!

Mooch and I are all good. Just a misunderstanding and messages taken wrong. I apologized to him for my post sounding ignorant as I was not trying too.
Mooch-thanks for the info on the upgraded batteries for my sw. Also thanks for assuring me my current batteries will not blow up on me. However, as I said in my message with my current hours I'm working I just grab and go. I've decided to order four vtc4 batteries to accommodate my collection so I have room for expansion down the road. Thanks again for the info.

 

[SomeTexan]

Mooch and I are all good. Just a misunderstanding and messages taken wrong. I apologized to him for my post sounding ignorant as I was not trying too.
Mooch-thanks for the info on the upgraded batteries for my sw. Also thanks for assuring me my current batteries will not blow up on me. However, as I said in my message with my current hours I'm working I just grab and go. I've decided to order four vtc4 batteries to accommodate my collection so I have room for expansion down the road. Thanks again for the info.

That wasn't aimed at you. I've seen others get angry at him for jumping in about battery safety. I've been meaning to let him know that I appreciate his knowledge and willingness to share it with the forums for a while now. It seemed to be the right time because I figured he would see it.

 

[josh w]

Lol. Ok. Well I just wanted to make that point clear. He has given me some good knowledge on batteries.

 

[TheLordWinter]

The output of the board inside that mod is 45A because it might be putting out 3.67V at up to 165W (165W / 45A = 3.67V). But, the current coming from the batteries will still only be 165W / 6.4V = 25.78A maximum (assuming 6.4V cutoff).

What is the lowest voltage the IPV3 Li will handle before saying low battery? That will determine what the max current is drawn from the batteries. 25R's will be driven quite hard at max watts but might be OK.

While I'm grateful for all your work, I'm especially thankful for that bit right there about how to figure the max current draw on the batteries for a given mod. Never been imaginative with math, didn't think of turning the equation around like that. With 8.8v max input and a max wattage of 160 on the XCube 2, I'm a lot more confident now in my choice of the VTC4's. A friend informed me that I was being gifted with one and asked me to choose the batteries because it "was all greek to them"

Now I can't wait for the mailman!

 

[Mooch]

While I'm grateful for all your work, I'm especially thankful for that bit right there about how to figure the max current draw on the batteries for a given mod. Never been imaginative with math, didn't think of turning the equation around like that. With 8.8v max input and a max wattage of 160 on the XCube 2, I'm a lot more confident now in my choice of the VTC4's. A friend informed me that I was being gifted with one and asked me to choose the batteries because it "was all greek to them"

Now I can't wait for the mailman!

The easiest way to figure out max current for a regulated mod is...

Max Current = Max Wattage / Low cutoff Voltage

Then you don't have to worry about battery voltage/current versus coil voltage/current, etc.

[edit] This assumes a regulated mod in VW/Wattage mode.