testing voltage on 21700 batteries?

[AMD64Blondie]

I have a voltage tester from ZTS that is certified to work with 18650 batteries.
(It's the kind where you use a probe attached to the tester to check the battery terminals..)

Will it work with 21700 batteries? I know 18650 batteries and 21700 batteries are the same voltage..so I'm fairly certain it'll work fine.

Just wanted to double-check.

here it is: https://www.ztsinc.com/minimbt.html

 

[peter yetman]

As long as the probe will reach around the larger cell, it'll be just fine.
P

 

[archimedes]

Load test curves are likely different however

 

[AMD64Blondie]

Thought I'd ask.Now here comes the waiting for my new Zebralight SC700d.
(Fedex is tormenting me...I thought it'd arrive today.)

 

[tonkem]

I have the MBT-1 and have the 40t samsung 21700's that I ordered with my Zebralight SC700d, and it appears to work the same as the 18650 tests that I have run. It shows 100%, etc, when fully charged. Hope you like the Zebralight. I like mine, but I have quite a few Zebras. They are my favorite light maker.

 

[WalkIntoTheLight]

Thought I'd ask.Now here comes the waiting for my new Zebralight SC700d.
(Fedex is tormenting me...I thought it'd arrive today.)

You don't need a separate battery tester to check cell charge. The Zebralights are pretty decent for the lithium-ion lights (their NiMH load testing sucks, though). Quad-click from off, and you get 1 to 4 blinks to indicate charge level.

Okay, okay, I know it's only doing a voltage test, and the ZTS is way more accurate. But really... do you need an exact level, or will 1 or 2 blinks be enough to tell you its time to recharge?