Kratax 1.5V AA Lithium Rechargeable Batteries, 12 Pack 3A High Capacity 3500mWh Li-ion Batteries, 1600 Cycles, Long Lasting, Constant Output for Controller, Toys, Remote Controls, Fast Charge

A ok

The batteries are great the only issue is after about 1 year of use maybe 20 re charges. they all seem to slowly go bad and won’t hold a charge.

These are not cheap at $4 each but do far after constant use in led candles, they are good. They give full 1.5 volts then stop. Last as long as the 2800 EBL NiMH but those fade over time… less get darker. They are brighter .. good to have a set around. None out of 16 awuired have failed in 3 months of constant use.

Only work for a few hours

Each battery delivers almost 5v of charge, not 1.5v. Completely destroyed my $600 remote control!

I would love to had these on my "walkman" or "discman" era. Where you barely have the NiCd recharge that are 1.2v so most devices would already say "low battery" since they expected 1.5v. Anyway, old person talk aside, we have couple of these, and we switch them on ours smart locks. they seem to last as good AA non-rechargeable batteries like duracell, you know the expensive ones, which is nice.One thing that I noticed is that since this is Lithium, it maintains the voltage high for most of their charge. So, the smart lock will say "battery OK" for like 6 months, and then, one day will say battery 0%. while using normal batteries will see 100%/80% and so on. Its something to consider since it wont give you much time from "battery low" until they run out.