Highest energy density 20700/21700

Batteries and Chargers Rechargeable Batteries
1

I’ve spent a few hours trying to learn as much as possible, and I’ve come to the conclusion that both the Samsung 50E and LG M50 appear to be the most energy dense out there. I do not need more than a few amps of draw and continuous draw is expected to be 2a. Cycle life is no factor, nor is cost (within reason).

Just wanted to get some feedback on the conclusion I’ve come to and whether or not there’s something else I should look at. Both 20700 and 21700 fit my use case. The LG M50 seems to have a very slight lead as far as capacity goes but that surely could come down to cell tolerance…

As far as pure energy density goes with minimal need for power density, what would your choice be?

Side note, there’s a part of me that wants to wait to see what comes out that may exceed the 5ah mark in 21700 batteries, but who knows when that will happen

2

Yes those couple cells are at the top right now.

There is the new Samsung 50G (rewraps sold by vapcell) that has similar energy density at low currents but has significantly lower IR so has better energy density at higher currents. But at 2A it won’t make much of a difference.

3

The internal resistance won’t be much of a factor at the current levels I use. Thanks for your insight, I’ll move forward with the 50E.

Never understood why someone like Effset or Vapcell gets newer batteries like the 50G before they’re actually sold on the market under their OEM.

4

Panasonic Cell