Li-ion Lies

Posted 9th July 2019 by Dave Cross
Disreputable vendors are still selling lithium-ion cells for vaping with misleading statements about the product. Battery experts highlight that claims of high capacity or current output go beyond exaggeration and can only be described as outright lies.

Batteries on sale on retail sites like Amazon and eBay are making outrageous claims.

On Amazon:

On eBay:


Claims made on the Amazon site are almost reasonable when compared with cells for sale on eBay where batteries are listed with an absolutely ridiculous 12000mAh rating.

“There is no 18650 with a capacity rating over 3600mAh” – Battery Mooch

Battery Mooch, an expert on all things Lithium-ion, says: “If you are considering purchasing a particular 18650 battery, just remember:

  • There is no 18650 that can have a factory/manufacturer rating over 30A
  • There is no 3000mAh 18650 that can have a rating over 20A
  • There is no 3100mAh-3600mAh 18650 that can have a rating over 10A
  • There is no 18650 with a capacity rating over 3600mAh”

Mooch offers these words of caution: “Misusing or mishandling lithium-ion batteries can pose a SERIOUS RISK of personal injury or property damage.”

He lists the following advice:

  • Only buy batteries from a known, trusted vendor of genuine batteries
  • Never use a battery, charger, or device that is not in perfect working order
  • The plastic battery wrap and top insulating ring must always be kept in perfect condition to prevent short-circuiting of the battery which can result in the battery bursting
  • Never exceed the battery's continuous discharge rating (CDR) or charge rating

Long-term battery supplier to the vaping community Torchy says: “Ultrafire batteries are crap. This 3000mAh 18650 was found to have an actual capacity of 530mAh when tested. No surprise there, but under the wrapper it wasn't an 18650, it was an 18500 with a spacer added. There was a nut glued in the base of the spacer to add weight.”

POTV approached eBay and Amazon for comments about the listings. Both have yet to respond.


 Dave Cross
Article by Dave Cross
Freelance writer, physicist, karateka, motorbikes, and dog walker
Legion of Vapers