Sanyo 20700 30 a 3500 mah ?

DOC1500 · 2019-02-27T00:30:27.000Z

I’m new to high-end- high-tech flashlights, the flashlights I do have take 18650 batteries, where do these 20700 batteries fall into place ?

Sidney_Stratton · 2019-02-27T01:05:29.000Z

Had trouble with that title. You mean a “Sanyo 20700A - 30 A / 3100 mAh”. Well you could look it up Wiki / Google…
Battery Mooch

DOC1500 · 2019-02-27T01:31:22.000Z

This…Sanyo NCR2070C 3500mAh 30A 20700 Battery - 18650 Battery Store
Will this fit in a flashlight that takes a 18650

BlueSwordM · 2019-02-27T01:35:19.000Z

No, unless it’s specified to take 20700/21700s.

20700s//21700s are bigger than 18650s.

Why?

18650: 18mm D, 65mm H
20700: 20mm D, 70mm H
21700: 21mm D, 70mm H

DOC1500 · 2019-02-27T02:21:28.000Z

Are they necessarily better than 18650?

BlueSwordM · 2019-02-27T02:25:04.000Z

Yes, as they can have much higher capacity, high drain capability.

As an example, the Samsung 50E is a slightly higher energy dense Samsung 35E 18650 in a 21700 size can.

Tom_E · 2019-02-27T03:24:05.000Z

Just ordered 2 of those 'C's - looks good but think they fall short of the 30T and 40T - worth looking at though.