Questions About the Volt Charger

[Huuwap]

I'm under the impression that these smaller batteries, KR808d-1 style, shouldn't charge at more than 4.25v from research across various different google searches and inquiries. I see that the charger you guys sell is actually 5v - are your batteries that much different than the normal KR808d-1 batts?

And hi Heather if you come across this thread, just closed a ticket out with you this morning on pretty much the same issue, lol.

I also have a post here in the KR808d-1 section of the forum. Just looking for somebody a bit more knowledgeable than me to chime in here. My main reason for asking is because I have a 4.2v, 100mA USB charger already from another KR808 kit that I bought last year and wanted to know if I could use it while waiting for my Volt charger to come in...but knowing that over 4.25v+ can damage KR808 batteries, I'm not sure I want to use the Volt charger at all. Help me out here, lol.

 

[jays1fan]

I am no expert , but I can tell you that ALL the charges in my house say 5V. V2 cig charger , Cell Phone and I touch.
I think it is the second number ( amps ) that determines things. all those chargers same 500 - 1000 amps.
but I was told you can use a gen 2 batt ( Volt ) on a Gen 1 Charger (V2) , but NOT the other way around.
hope this helps.

 

[Huuwap]

Well, the wall unit should be 5v and supply 500mA or higher if it has a single USB port. It's the USB charger that plugs into the AC adapter that I'm not used to seeing above 4.2v, even on my KGO battery.

The amps specify (from my understanding) the force or pressure of the electricity going into the unit. I definitely wouldn't want to use the 450mA charger on a 280mAh battery...but it would be perfectly OK to use a 100mA charger on an 1100mAh battery..as long as you're willing to wait a LONG time for it to charge. Again, this is all from what I've read on various resources and it may not be 100% correct, but it's my understanding.

 

[Imagine]

our batteries have more mah and have a shutoff when fully charged... you can charge our batts on the older chargers but they will take a bit longer and may not get a full charge. The older style 808d1 may get fried if you use them on our chargers.

I'm under the impression that these smaller batteries, KR808d-1 style, shouldn't charge at more than 4.25v from research across various different google searches and inquiries. I see that the charger you guys sell is actually 5v - are your batteries that much different than the normal KR808d-1 batts?

And hi Heather if you come across this thread, just closed a ticket out with you this morning on pretty much the same issue, lol.

I also have a post here in the KR808d-1 section of the forum. Just looking for somebody a bit more knowledgeable than me to chime in here. My main reason for asking is because I have a 4.2v, 100mA USB charger already from another KR808 kit that I bought last year and wanted to know if I could use it while waiting for my Volt charger to come in...but knowing that over 4.25v+ can damage KR808 batteries, I'm not sure I want to use the Volt charger at all. Help me out here, lol.

 

[Huuwap]

So the new 808d-1 batteries are fully acceptable to charge at 5v? I'm off to do some looking for info on that (not that I don't trust you!) - do you have any resources you can point me at?

EDIT: Found a link to a post on ECF where a pretty long discussion about this took place a few months back. I think I'm pretty content with the result, and will use the Volt charger without worry...just kind of bummed that I put $10 out for it that I didn't need to

http://www.e-cigarette-forum.com/fo...-battery-chargers-will-i-void-warranties.html

 

[Imagine]

well our batteries will only accept a certain amount of current... the rest would be irrelevant.

I cannot speak about batteries from other companies though.


Not sure what kinda info you are looking for....

So the new 808d-1 batteries are fully acceptable to charge at 5v? I'm off to do some looking for info on that (not that I don't trust you!) - do you have any resources you can point me at?

 

[Huuwap]

It's pretty clear to me now - your battery is what's really handling the voltage and current regulation. Nifty!

I know the 808 (POS) I currently have doesn't, but wasn't aware that the Volt did. I edited my post above to link to some good info about gen 1 vs. gen 2 batteries.

Thanks for the help!

 

[jays1fan]

Well, the wall unit should be 5v and supply 500mA or higher if it has a single USB port. It's the USB charger that plugs into the AC adapter that I'm not used to seeing above 4.2v, even on my KGO battery.

The amps specify (from my understanding) the force or pressure of the electricity going into the unit. I definitely wouldn't want to use the 450mA charger on a 280mAh battery...but it would be perfectly OK to use a 100mA charger on an 1100mAh battery..as long as you're willing to wait a LONG time for it to charge. Again, this is all from what I've read on various resources and it may not be 100% correct, but it's my understanding.

i got you now. the "Cord" the batt plugs into .. Mine says Imput 5v and output 4.2v - 200ma and was told by others in that 808 forum that was ok to use on gen2 batts like the Volt.

 

[Imagine]

correct

It's pretty clear to me now - your battery is what's really handling the voltage and current regulation. Nifty!

I know the 808 (POS) I currently have doesn't, but wasn't aware that the Volt did. I edited my post above to link to some good info about gen 1 vs. gen 2 batteries.

Thanks for the help!

 

[Konstantine]

Clarifications:

Like many new devices on the market (mobile phones have the charger integrated for over 15 years) those batteries have a regulator and a charger INSIDE the casing, meaning all the battery power management circuits are inside the battery, the USB adaptor (adaptor not a charger) is just an interface from a USB port to a battery. The circuit implemented inside the adaptor is used ONLY to provide visual status indication (blue/red led) and nothing more. That means you can even power the battery from your shaving machine or anything else that provides 5 volts and at least 300-350mAh .
That is for SI's batteries, i have no idea how other vendor batteries work.

 

[Huuwap]

The gen. 1 batteries are unregulated - the USB adapter housed the wiring / circuitry to limit v and mA out. Actually, you see this on the Volt charger too. It plugs into either a computer USB port (5v) or a wall adapter (5v). From there the charger (or passthrough if you want to look at it as such) limits mA going to the battery so as not to overload it.

 

[Konstantine]

There is only a voltage comparator inside (LM393) for the led.

 

[Huuwap]

Right, but the wiring in the unit can only carry so much current at one time.

 

[Konstantine]

I'll open my adaptor (again) and maybe draw a schematic and also measure the tracks on the board, maybe i can rate the mah's rating but i don't believe it would go more than 500mAh.

 

[Huuwap]

Check this out: Charging Batteries Using USB Power - Maxim

I'm not big on electrical stuff, I could be BSing most of this D), but I know for sure that mA output for the AC adapter is 500mA and mA output spec for the USB adapter is 100mA (in the case of my gen. 1 adapter). I highly doubt it would be legal to label the device as such if it wasn't actually physically limited between the input from the AC adapter and the output to the battery.

And I have the below pic uploaded anyway...might as well post it just as an example. Not that it really proves anything other than it's a sticker on a USB adapter.

 

[Konstantine]

I'll try to explain soon, cause i am busy right now and very tired.

 

[Konstantine]

Hey again.
The charging voltage for VOLT batteries is 4.5V-6.0V, any voltage in this range will charge the battery. SI's Chargers are at 5V just for safety (voltage drops etc).
The adapter comparator only compares the input voltage versus the output voltage, when the battery is empty the output of the adapter drops a bit and the comparator lights the red led. The voltage drop isn't much to be considered too much so i guess 4.2V will not work.
Even if you use a 30Amp power supply the asic inside the battery won't draw much, only what the battery needs.
If the battery voltage is below 2.7V then the asic trickle charges the battery untill it gets over 3.2V and thet starts charging normally.
There is no current limiting inside the charge adapter, it all happens inside the bat.

Let me know if you need more details.