Use note:Please pay attention to the battery voltage on the voltmeter during useDisplay, when 12.4V is displayed, it is fully charged; when displayedWhen around 10.5V, please be sure to use it after charging. NoIt will directly damage the battery.User needs:1. When the user uses the device for the first time, it may happen that the arc trigger switch is pressed and the arc fails, and the LED2 on the function panel can be observed, that is, the SRT indicator is off. If this happens, the user It is necessary to turn off the power switch and turn it on again to release the protection state of the device until the RST indicator on the function panel lights up again.2. After the RST indicator lights up again, the user needs to touch the discharge needle of the device, and then try to trigger the arc trigger switch again to assist the startup of the device. This process can be tried several times until the device can emit arcs normally. .3. If the RST indicator suddenly turns off during use, users can try to turn off the power switch and restart the device again to restore to normal.Specification:- Category: Manual DIY assembly works- Power supply: 12.6V lithium battery pack 2200mA- Charging: AC110V-240V- Endurance: ≥1700 times- Frequency: 1.1-1.3Mhz- Size: Length 20cm Width 7.1cm Height 18cm- Arc: 13cmPackage:- 1pcs x Portable Trigger Mode Tesla Coil Handheld Tesla Coil Artificial Lightning DIY