Powerful and upgraded 1600mAh batteryUpgraded and stable PCB control headMore comfortable and ergonomic spin dial for adjusting the voltageLonger life span for the new upgraded PCB and battery cellDimension: 124.5(L) * 16.5(D) mm W:61.8gOperating Voltage (output): 3.3-4.8V Charging voltage(input): 4.2V / 420mAPacking Details:1 pc Spinner II Battery(do not come with a USB charger)Instructions:1. Turn on/off the batteryThe battery is turned on/off by pressing the button ﬁve times in two seconds When the battery is off, the button ﬂashes three times in mixed color to indicate that battery is activated after pressing the button ﬁve times in two secondsWhen the battery is on, the button ﬂashes three times in mixed color to indicate that battery is off after pressing the button ﬁve times in two seconds !2. Set the voltage outputSpinner II is capable of outputting voltage from 3.3v to 4.8vThe bottom scale indicates the position of voltage output levelRotate the bottom spin to align the red line with the bottom scale to arrive the voltage output level as marked in numberThe red line on bottom spin can stay at any position along the scale between 3.3v and 4.8v to ﬁne-tune your voltage output, despite the four locking position at 3.3v, 3.8v, 4.3v and 4.8v Please be aware that the red line moves between 3.3v and 4.8v along the scale and do not push the red line on bottom spin to go over the 3.3v clockwise and 4.8v counter clockwise; it may damage the battery if being pushed forcefully3. Power indicationSpinner II could display three colors from the button to indicate the battery usage levelIf the button displays WHITE color being pressed when battery is on, it indicates a remaining 60%-100% battery powerIf the button displays BLUE color being pressed when battery is on, it indicates a remaining 30%-60% battery powerIf the button displays ORANGE color being pressed when battery is on, it indicates a remaining 0%-30% battery power ( time to charge the battery!)The button ﬂashes ﬁfteen times in mixed color to indicate that there is no power at all left in battery and it can no longer function without being properly charged4. Other important factsShort circuit protection - when battery is on, in case of a short circuit occurred which usually happens if the user operates wrongly during installing a cartomizer onto the battery or connecting USB charger to the battery, the button ﬂashes three times and stop working temporarily until the conditions causing short circuit are removedWorking time protection - when battery is on, in case of pressing the button non-stop for more than eight seconds, the button ﬂashes ﬁve times and shut down the output instantlyCharging time - Spinner II, for its large capacity of 1600mA, requires about 5-6 hours to be fully recharged if the the battery has no power at all.Spinner II, no different to regular eGo batteries, requires a standard USB charger of 420mA output and a wall adapter of 500mA output. Any use of non-standard chargers, especially with higher output such as iPhone chargers, is likely to damage the battery and cause unwanted consequences. Therefore the usage of non-standard chargers on Spinner II is strictly prohibited and immediately invalidates the warranty.