What does 3.7 mean on 18650 batteries?
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3.7v is the average output rating. And 3.7 is for a battery, not an a mod device... Which I believe you are referring too.
A battery at full charge is 4.2v. Our batteries are just classified as 3.7v for it's average output rating. The devices you speak of that can go from 3 volts to 7 volts are variable voltage. Meaning it has circuitry in there that can boost or lower the voltage used from the battery.
3.7 volts is the nomimal voltage of the cell. It should be right at 4.2 volts fully charged and drops off as it is used down to about 3.2 volts. Look at a cell discharge curve and you will see the majority of the charge life is in the 3.7 volt range.
Some variable voltage devices have a step up capability in which you basically get more voltage out the cell. My Vamo V5 can go from 3 to 6 volts with a 18650 cell. How it does it I will leave to an electronics expert.
- Dirk
Some variable voltage devices have a step up capability in which you basically get more voltage out the cell. My Vamo V5 can go from 3 to 6 volts with a 18650 cell. How it does it I will leave to an electronics expert.
- Dirk
Some variable voltage devices have a step up capability in which you basically get more voltage out the cell. My Vamo V5 can go from 3 to 6 volts with a 18650 cell. How it does it I will leave to an electronics expert.
I'm no expert but I bookmark many links: DC boost converter
3.7 is the standing voltage of the battery. It will carry a higher surface charge right off the charger
im not wanting to hi jack a thread or go off topic but the OP is kind of touching on a subject i wanted to ask about.
on my battery charger it has a 3.0v & 4.2v switch.. im under the impression it will charge a cell till it reaches which ever it is set to.
the batterys im using say they charge to 4.2v .. would i be right in thinking i set the charger to 4.2v to match the battery?
on my battery charger it has a 3.0v & 4.2v switch.. im under the impression it will charge a cell till it reaches which ever it is set to.
the batterys im using say they charge to 4.2v .. would i be right in thinking i set the charger to 4.2v to match the battery?
Oh okay I get it. But if 3.7 is that standing voltage and 4.2 is the full voltage. Is it okay to vape over 4.2?
Here is a Great Sight for Info on Batteries.
Basic to Advanced Battery Information from Battery University
Yep, you can.
Lithium ion batteries are all about 3.7 volts (well, depending on chemistry... but the most common is 3.7v... if you have a removable battery in your cell phone, open the phone up, you'll most likely see a 3.7v Li-ion battery in there).
The electronics in devices can boost the voltage. The battery still puts out about 3.7 volts but the electronics in the device kick it up to whatever voltage you want to use.
It's just that batteries are constrained by chemistry. They put out whatever they do and the devices you use them in have to regulate the voltage to something useful. The electric car? Believe it or not, those are 3.7 volt Li-ion batteries in there. A lot of them but the cells are the same basic battery I use in my VTR. Seriously. If I recall correctly, the Tesla uses 18650s.
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