Coil Master 521 Tab Mini

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6 reviews

Coil Master 521 Tab Mini

Driven by a single 18650 battery, Coil Master 521 mini Tab is a handy compact device for vapers. It allows users to use it as a build deck and is able to dry fire their coils down to 0.1 ohm as well. Reverse battery protection and short circuit protection are also built in for safty use.


  • – Ohm meter
  • – Coil rebuilding deck
  • – Coil burning
  • – Reverse battery protection
  • – Short circuit protection
  • – Battery out put voltage testing


  • – Resistance Measuring Range: 0.1-9.9ohm
  • – Resistance rate: 0.1ohm
  • – Connection: 510 threaded with spring loaded pin
  • – Battery: Single 18650 battery driven (Battery is not included)

General specifications

  • Dimension: 80mm x 80mm x 28mm
  • Weight: 80g
  • Housing material: ABS
  • Packing
  • Cardboard gift box
  • 521 Mini Tab x 1
  • Manual x 1


This product is for advanced user only! Please have a great understanding and technical knowledge on how to use this product in order to properly use it. Use it at your own risk!

Note: There is always an inherent risk when using any rechargeable batteries at anytime and under any circumstances. and any of’s parent and subsidiary companies are not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making. and any or all of’s parent and subsidiary companies will not be held responsible or liable for any injury, damage, or defect, permanent or temporary that may be caused by the improper use of a Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable battery/batteries as well as chargers. Please have a greater understanding of the batteries/chargers you are using and how to care for them properly.

When working with Li-ion (Lithium-ion), LiPo (Lithium-ion Polymer) and any rechargeable cells, please be cautious and carefully use as they are very sensitive to charging characteristics and may explode or burn if mishandled. Please make sure that you have great knowledge on all rechargeable batteries before you use them. Always charge batteries at the clean and fire-proof surface. Never leave charging batteries unattended. If you see that there are visible damages on the batteries, please do not use. Always keep, store and transport the rechargeable cells in a safe, non-conductive container in controlled environment

Do not use any rechargeable battery as well as any battery charger if any visible damage is present, as well as if the cell or charger has been stressed through mishandling, accidental or otherwise, even if damage may not be visible. Always store and transport rechargeable cells in a safe, non-conductive container in a controlled environment. Please dispose battery cells, chargers or any other electronic devices in accordance of local laws and mandates.

Customer Reviews
5 Based on 6 Reviews
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Filter Reviews:
A absolute must have for every vape enthusiast.

No complaints. Everything works and in return I won't screw up my mods, or blow myself up. So... That's happy Ohm's Law. Learn it. Use it.

Verified B.
Good .

works great

Verified B.
was sent the v2 for same price .

Great for building when using a Mec, the fire button is very nice for getting out hotspots, the tab had no wrapping on it and it looked like it was opened and used or tested. But over all a v2 tab mini for the price and fast reasonable priority shipping is a great deal.


works great

Great device

works great