These are genuine Vision branded Spinner batteries rated at a 650mAh capacity.  These batteries are the same diameter as a standard eGo style batter and are approximately 94mm or ~3.625 inches long

Using the adjustable dial at the bottom of the battery the user can adjust the voltage up or down between 3.3V and 4.8V.  This allows the user to fine tune their vaping experience by matching the correct voltage to the resistance and flavor they are currently using.  Then when switching to a new resistance or flavor they can easily adjust to match it perfectly as well.

These batteries have a safety feature that will de-activate the button so that the battery can be stored without accidently being activated. Simply press the battery button 5 times quickly and the battery will be de-activated. Press quickly 5 more times to re-activate it for normal operation.

Operating at too high of a voltage will cause a burnt taste and can quickly damage your atomizer/cartomizer/clearomizer.  If burnt too much the atomizer/cartomizer/clearomizer may always taste burnt.  Therefore it is best when attaching a new heating element to start at a low voltage and slowly work your way up in voltage (pausing for 15-30 seconds between hits to allow time for the liquid to wick properly) until a slight burnt taste is noticed.  Once the burnt taste is noticed, back the voltage down a little until the burnt taste is no longer there.  However, a burnt taste can still occur if you take several puffs in a row, so if you are a heavier vaper then it may be best to back it down a bit further to avoid this.

***eGo Batteries should only be charged with a proper eGo compatible charger (output rating should be 420mA).  Compatible chargers include: eGo/eGo-T/eGo-C USB Wire Charger.  Use of other chargers (even if the battery will fit the charger) will void warranty and may cause battery to fail, become defective, or even explode.