Test your DIY coils for safety!
Both the Coil Master 521 Tab or the Mini are powered with one 18650 battery which is sold separately. Use it as a build deck and dry fire coils down to 0.1 ohm. Reverse battery protection and short circuit protection are also built in for safety.
– Ohm meter
– Coil rebuilding deck
– Coil burning
– Reverse battery protection
– Short circuit protection
– Battery out put voltage testing