How long do you usually use a battery until you replace it? I've had 2 MNKEs for about 2 months and they seem to crapping out. I also have 2 Panasonic NCRs that I've had for about the same length of time and one of them also seems to be crapping out. Just wondering how will I know when to replace my batteries as I am sure these things don't last forever.
Battery life
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A lot depends on the charger you are using, how far you drain down the batteries before changing them out, watts vaped at and amps drawn. I have been going strong on the same batteries I bought 6 months ago. My vaping has changed drastically so it's difficult to determine how well they have been holding up. I'm thinking a well maintained battery should get one at least a year of service, depending on how many you rotate through and other factors.
If you drain a battery down below a certain point, it is toast. I never drain mine below 3.5 and mine have been going well for about a year now, though I do rotate through several. Don't charge them for about a half hour after taking them out of the PV, and don't put them back in a PV until a half hour after charging.
That is a pretty low ohm and discharges the batteries pretty quickly. If they ever got too low, they are toast. If you ever forgot to rest them, they will be toast sooner. But with the high discharge rate you are working with, they are probably toast. You might want to consider upping the ohms a bit to over .5 if you care about battery life.
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All posted tips are good. Don't discharge them too low, don't discharge them at a very high rate for their size / capability, and don't short-circuit them. Every hard short-circuit is taking some life out of the battery -- if you compare a stressed / shorted battery with a new one of the same type/brand, you'll notice a big difference in the ability of the battery to sustain a high voltage under load. If you take care of them, they will serve you well for at least a year.
I'm still using the original Samsung 2600 mAh battery that came with my eVic 7 months ago ... no issues with it so far. I also have some "generic" blue colored 18650s that I got CHEAP and they seem to be holding up pretty well in my other mods ... I have not actually gotten rid of a battery since I started vaping, mine all still work well.
Two of my Efest 18650 that I use every day for a year are going there not holding a full charge anymore. When volts go down to 3.6 their useless but do show voltage in them.
At that resistance, most batteries will discharge quickly. There are not many batteries that can handle that low of resistance. Try looking for a high amp battery that has higher mah. Also, you should increase resistance to make your batteries last longer.
I am pretty sure the Panasonic NCR batteries are not very useful for vaping. I remember them being regarded as not high drain. They do not work well with normal resistance, let alone sub ohm.
They did a good job. Time to replace. Industry standard line is all Li-ion batteries as a group are good for 300 charge cycles. That goes for both replaceable and non-replaceable batteries. You got that 300 charge cycles or pretty close to it. Capacity is the first to suffer when these batteries begin to fall off. Expect this to vary with chemistry and battery make. My gut feeling is that 150-200 charge cycles is good given the chargers and duty cycles most of us vapers use.
Realize these batts were never meant for the stress that regular atomizer ohms puts on them...add to that sub ohms and they're really being overtaxed beyond the limit. Certain procedures that can be applied that will help with the longevity.
Like others have said, stressing a battery with high discharge rates will definitely shorten its lifespan. Although there are several good quality batteries that are fully capable of delivering a solid high current to your atomizer, doing so frequently accelerates the chemical changes in the battery that permanently alter its ability to hold a charge.
Liken it to driving a car, stomping on the accelerator at every stop sign, and driving at red line RPM at every opportunity.
Liken it to driving a car, stomping on the accelerator at every stop sign, and driving at red line RPM at every opportunity.
You might get 2hrs at full power with .2 to .3 ohms on a mnke batt. They are only 1500 mah
I would recommend switching to Panasonic NRC 18650PD batts and .5 ohms. They are 2900 mah and the pulse amp limit is 18 amps (10amps continuous)
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So does anyone know how long my provari will last with 18650 batt? It doesn't arrive until Monday, but trying to mentally prepare 
Batteries are cheap. Even a $15 battery that lasts a year cost you only 4c a day. So buy the best you can afford and throw them out when they no longer hold a charge under load.
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That depends upon how heavy of use, the resistance and voltage you'll be using, and the type of delivery device.So does anyone know how long my provari will last with 18650 batt? It doesn't arrive until Monday, but trying to mentally prepare
I typically am using a 2.5 - 3.0 ohm single coil cartomizer in a tank at 3.6 - 4.2 volts, moderate user (3 - 4 ml of juice daily). These last me from morning (6am) to night (10pm), at which time I put in a fresh battery before bed. If I'm using my AGA-T2 with 2.0 ohm coils, I get about 10 hours. I rotate between four AW 18650 IMR 2000 mAh batteries. These batteries are about a year old or more.
You should see a little better battery time with newer batteries and a quality charger (Pila, Xtar, Nitecore), especially if you rotate with at least three batteries. You'll get less battery time if you use LR or SR coils and use higher voltages than me.
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