From Mooch
(In part):
Bench Test Results: Ultrafire 1200mAh Button Top 18350...2A rated, 700mAh, DO NOT buy
Bottom Line: Why test 18350’s? I get a lot of requests for this as many vapers still use them.
Why test a cell from a company with such a terrible reputation? We always have new vapers joining our community and they might not know about the reputations that UltraFire and TrustFire have.
This UltraFire is a useless cell.
Its voltage immediately collapsed at only 5A and the two cells I tested only delivered 728mAh and 750mAh for a 240mAh (0.2C) discharge down to 2.5V. Its internal resistance is astoundingly high, causing huge amounts of voltage sag.
I am estimating this cell’s ratings at 2A and 700mAh. Current ratings for high internal resistance batteries like these are a combination of the temperature the battery runs at and how badly the voltage sags, i.e., its Wh specs.
Two cells were purchased for the purposes of testing by me.
(In part):
Bench Test Results: Ultrafire 1200mAh Button Top 18350...2A rated, 700mAh, DO NOT buy
Bottom Line: Why test 18350’s? I get a lot of requests for this as many vapers still use them.
Why test a cell from a company with such a terrible reputation? We always have new vapers joining our community and they might not know about the reputations that UltraFire and TrustFire have.
This UltraFire is a useless cell.
Its voltage immediately collapsed at only 5A and the two cells I tested only delivered 728mAh and 750mAh for a 240mAh (0.2C) discharge down to 2.5V. Its internal resistance is astoundingly high, causing huge amounts of voltage sag.
I am estimating this cell’s ratings at 2A and 700mAh. Current ratings for high internal resistance batteries like these are a combination of the temperature the battery runs at and how badly the voltage sags, i.e., its Wh specs.
Two cells were purchased for the purposes of testing by me.