It depends where you have the voltage set to on that model. That runs from 3.5v the lowest upto 5v. When the led(inside button) turns yellow since Innokin uses a three color code Green, Yellow or Amber, and Red you have to watch for the color to change being the indication to recharge.
It's the same for the VV v3.0 or the VTR where you swap batteries out. The Vamos are 3.3v while the Spinners and Twists see 3.2v as the lowest on those batteries. How long any of them last before needing a recharge depends on the mah for the start and how you use it and how often. If you run with it turned up you draw more amperage away from a fully charged battery wearing it down a bit faster.
I get about 1 1/2 upto just over 2 days when running the v3.0s also 800mah at 3.9v but also set the wattage up to 7w since that has both options. I won't be able to finish the 3+ml in a Tumbler however since that takes at least 1300mah at 7 watts.This is one reason most who want to run things at 3.7v while tend to pick out a mechanical mod while some will also sub ohm due to the increased battery capacity you get from an 18650 or 26650 type battery.
Still trying to find some 1200mah 18350s however for the new Smoktech Guardian Epipe Mod II
coming in since that is much like the Smok Aro Winder
being a variable wattage epipe mod. The few I have now used a year ago on another epipe are 700mah for those. And the first version Smok Guardian
runs on 18650s but is only another mechanical epipe mod. So far I keep running into 800mah listings which is a wee bit better but....
Batteries are like ejuice when it comes to vaping! ThrashZone
If you turn up the power(volts or watts or both) you end up going through both faster then when things are running cooler. The same applies to anything else with batteries and a potentiometer like a portable radio, mp3, or dvd player. If you turn up the volume you draw a higher current value. With this new Eleaf iStick I find I end up having to lower it more then bring it up since the volts go up with the watts! Instead of 7w I have to leave it down to 5w most of the time with a menthol flavor in. Others 6w or 4w depending.