question about atty internal resistance.

[Mohd Asraf]

hi all.

I'm having some issues with my ody internal resistance. I'm using provari as my main pv. before putting my ody to the connector i do some checking with my battery and shows full charge. however after vaping in less than hour, checking back the battery, it shows significant drop from 4.2 to 3.7. how can this happen? is this because of my ody internal resistance?

 

[Riverboat]

hi all.

I'm having some issues with my ody internal resistance. I'm using provari as my main pv. before putting my ody to the connector i do some checking with my battery and shows full charge. however after vaping in less than hour, checking back the battery, it shows significant drop from 4.2 to 3.7. how can this happen? is this because of my ody internal resistance?

Yes this is normal... Yes it is the atty resistance.... When you go to check battery mode have your atty unscrewwd somewhat, it will give the battery reading without load before the light goes out screw the atty tight and you will get the reading with resistance(load).

 

[Jammin J]

I think you're on the right track. What ohm load is the atty and what voltage are you running the Provari at with that atty?

It's possible the battery is "tired" and not able to hold it's charge as long as it was when it was new. If you have a very low ohm load and you're vaping at a higher voltage, it is generating more current which will draw your battery voltage down significantly faster than a high ohm load at a higher voltage. If you're atty is a 1.5 LR atty, anything over 4.1-4.2 is going to wear your atty out quicker. As the atty wears down, it's resistance increases until it short out completely. I have some LR 1.5 atty's that I have in service for a few months and they are registering down to 1.2 ohms. If I run these even at 4.2v, you produce close to 15 watts vs the 12 watts you would see at 1.5. Ideally, it's most common to keep the vaping wattage around 8-9 watts as this promotes longer life of your attys/cartos.

The attached Wattage Chart makes it easy to determine where you fall with a certain ohm load vs voltage.

Hope that helps,

J

 

[Mohd Asraf]

but is there anything we can do to reduce the internal resistance? from o.5 to 0.2 or lesser. my setup is 1.8ohm and using 3.7 to 4.0v, can last for 2 to 3 weeks. but my aw imr 18650 charge seems to be cannot last long anymore.

 

[PoliticallyIncorrect]

It's absolutely normal for a fully charged 18650 to briefly put out more than their rated voltage, then settle to their nominal 3.7V. Don't worry about that.

Something you don't need to be using with a Provari—and frankly shouldn't be—is an LR atty. All you're doing is forcing the battery to drain more current more quickly than it needs to.

 

[Woody-GC]

Something you don't need to be using with a Provari—and frankly shouldn't be—is an LR atty. All you're doing is forcing the battery to drain more current more quickly than it needs to.

What would be a more ideal setting? Is it less drain on the battery to keep it close to the batteries voltage and use an atty that would give the best performance at that voltage? Maybe use 8-9 watts as the optimal setting?

 

[manosf]

Look here https://docs.google.com/spreadsheet/ccc?key=0AlZnGjZRjO_UdGo3VVlnVHY0VExZLVd5aDkwUEJEZXc#gid=1 I use on ody 2.7 ohm at 4.5 - 5 volts and it is great.

 

[Woody-GC]

Look here https://docs.google.com/spreadsheet/ccc?key=0AlZnGjZRjO_UdGo3VVlnVHY0VExZLVd5aDkwUEJEZXc#gid=1 I use on ody 2.7 ohm at 4.5 - 5 volts and it is great.

Great chart! Thanks