Added more to the previous post....Also, I meant, why didn't they just make the batteries in parallel instead of series. Is there any advantage of series vs parallel in this mod?
Battery life. You wouldn't be able to fire 90W for very long on 1x 18650.
Dunno what you're talking about, for a China-made device, build quality on the IPV3 is astonishing.
I meant, a lot of people are complaining about the issues it has, batteries in series, charging not working, no touch sensor, cutting the warranty in half, etc...What I meant was, the IPV3 is a performance beast, like the IPV2.....so will people still buy the product because it performs very well, even though it has some flaws. I do agree that from a China-made device it is nice. I mean, you can't expect much quality control over there.
My warranty is fine, because I paid full price for my IPV3.
I meant some people are mad about the warranty. It was stated to have a 12 month warranty all along, but when the devices hit customers, it says it was only a 6 month.
I did not know about that.Oh, I didn't realize that.
I know some people weren't being offered warranty because they paid <$150.
I did not know about that.
Weird. I haven't even seen a site that offered them as high as $150. Eciggity even offers them at $135 and they are the biggest supplier for P4U. When I talked with P4U via email, they told me that Eciggity is their main seller.Apparently P4U issued a pretty strict $150 MSRP, despite whatever deals the vendors were getting them for (presumably ~50-90$ per unit, depending on MOQ). If you paid somewhere less than $150, odds are P4U won't honor the warranty at all.
Weird. I haven't even seen a site that offered them as high as $150. Eciggity even offers them at $135 and they are the biggest supplier for P4U. When I talked with P4U via email, they told me that Eciggity is their main seller.
Over time, the rate of voltage drop on a battery increases. A month of continually using/recharging a cell is more than enough time to make a difference. If you're using 2 batteries that are "married" in your IPV3, it's guaranteed that those batteries are being drained simultaneously. Additionally, you should be charging them together, meaning they've had the same number of charge cycles together. As soon as you take one of these married batteries out and, say, use it in a mech mod, you've "soiled the marriage" (lol), and the batteries will no longer drain at EXACTLY the same time.
Now yes, odds are, you won't experience catastrophic failure, but mixing batteries like this certainly increases the chances. One reason stacked batteries are so looked-down-upon is because if one battery has less nominal voltage than another one, the other one MAY attempt to lend it's counterpart additional power (sort of an attempt to compensate for the lack of voltage), which you do NOT want.
I've been recommended to only use batteries for a maximum of 8 months, and my cells that have been around longer than that REALLY have some very serious battery sag (they're virtually unusable, but I keep em around for posterity's sake).
Also:
Whether you're at 10W or 150W doesn't really make a difference in this case. If you were to put a virtually dead battery alongside a freshly charged one, you'd very likely see catastrophic failure regardless of the wattage setting.
Really?
Should this even make a difference in a regulated Mod? Sure, if you were doing this in a Mech, but ... isn't that the point of the electronic regulation to not allow "bad things" to happen like this?
Over time, the rate of voltage drop on a battery increases. A month of continually using/recharging a cell is more than enough time to make a difference. If you're using 2 batteries that are "married" in your IPV3, it's guaranteed that those batteries are being drained simultaneously. Additionally, you should be charging them together, meaning they've had the same number of charge cycles together. As soon as you take one of these married batteries out and, say, use it in a mech mod, you've "soiled the marriage" (lol), and the batteries will no longer drain at EXACTLY the same time.
Now yes, odds are, you won't experience catastrophic failure, but mixing batteries like this certainly increases the chances. One reason stacked batteries are so looked-down-upon is because if one battery has less nominal voltage than another one, the other one MAY attempt to lend it's counterpart additional power (sort of an attempt to compensate for the lack of voltage), which you do NOT want.
I've been recommended to only use batteries for a maximum of 8 months, and my cells that have been around longer than that REALLY have some very serious battery sag (they're virtually unusable, but I keep em around for posterity's sake).
Also:
Whether you're at 10W or 150W doesn't really make a difference in this case. If you were to put a virtually dead battery alongside a freshly charged one, you'd very likely see catastrophic failure regardless of the wattage setting.
With that said would using those other two married batteries with even charge cycles really be that big of a deal in a regulated mod?
I wouldn't worry about them being from the same batch etc. I have VTC5's purchased at different times and i know that some get more use than others but as long as they are the same batteries then they are going to be used. There is some risk in using any batteries but i'm not going to micro manage them or even worse start a spreadsheet to log the exact usage / charging times. Don't nail them down to the voltage limit and you'll have nothing to worry about. That said, if they've been chucked in the drawer for a while and generally not looked after then i would treat myself to a new set. As stated the IPV3 is a regulated mod so you would assume that the safety features would kick in before any major issues, plus it has a battery charge indicator.
Really?
Should this even make a difference in a regulated Mod? Sure, if you were doing this in a Mech, but ... isn't that the point of the electronic regulation to not allow "bad things" to happen like this?
use basic battery safety practices.