Best 1.5V liion these days

Batteries and Chargers Rechargeable Batteries
1

As per title, which one/s are thought highly of these days and why?
Both AA and AAA sizes - thoughts and recommendations much appreciated.

2

Xtar. Active in BLF with lots of reviews. Very good, very expensive.
Many of the others are lots cheaper, but their performance and reliability may be all over the map.
Brands seem to come and go at random, at least on Amazon.
Don’t trust Amazon reviews. 90% of them have no clue.

In general, I personally would avoid the USB-charge varieties. That’s extra hardware in the can that compromises capacity…usually. If you MUST have that feature, expect a capacity hit.
If you actually expect a ‘decent’ AAA, then disappointment will be your probable result. Can size is WAY TOO SMALL for the electronics plus the actually battery chemistry. I’ve tested 4 brands, all cheap-yes, but they were all about 300mAh or less, with limited current capability. Pathetic.

3

What makes you want 1.5V LiIon?

4

I have a couple of items that don’t much like 1.2V.

5

That’s the reason I would buy them too.
Be aware that Xtar has 1.5V li-ion cells that don’t have a flat discharge curve and try to mimic a normal cell, and in those devices you wont be able to use the entire capacity with them. So chose the flat discharge ones.

Self discharge comparison: https://www.akkuvergleichstest.de/

6

Thanks for that info.

I have been in to batteries/chargers/flashlights for quite a while now, but the 1.5V liion looks confusing with brands/types coming and going - so if you have a link to the ones you are referring to that would be much appreciated - maybe on AliE?.

7

They show the discharge curve on the product page, it’s the ”LR” models that mimics alkaline discharge curve : XTAR AA 1.5V LR 3000mAh USB-C Lithium battery - XTAR

Screenshot_20260108_105926_Samsung Internet
Screenshot_20260108_105926_Samsung Internet1047×991 95.1 KB

A device with a cutoff at 1.3V for example would waste a good part of the capacity so it’s not a good choice for high cutoff devices.

CLR has a flat then gradual decrease curve : XTAR AA 1.5V CLR 3300 Lithium battery - XTAR

Screenshot_20260108_110148_Samsung Internet
Screenshot_20260108_110148_Samsung Internet1106×895 99.2 KB

And then the normal ones with CV discharge and a step at the end : XTAR AA 1.5V 4150mWh Lithium battery - XTAR

Screenshot_20260108_110408_Samsung Internet
Screenshot_20260108_110408_Samsung Internet628×584 130 KB

Both CLR and normal allow a device with low batt warning to give that warning. But CLR would have better compatibility since it’s a gradual drop, for example if the device has warning at 1.25V and turns off at 1.2V then with the normal version there would be no warning.

2 Thanks