So glad to share we release a new rechargeable 1.5V AA CLR 2700mAh/4300mWh Battery. It has 2700mAh high capacity, Providing long-lasting performance in standard and cellular cameras. This new battery has the 1.5V constant output plus gradually linear discharge curve. The charge level of this battery would decrease slowly and not suddenly. Then it prevents sudden shutdowns and gives ample time to replace the batteries, ensuring uninterrupted outdoor photography.
Please check more details online:
So if I get it right: these are just like the 1.2V Ni-MH rechargeable batteries we all know. But with a high(er) capacity. What about the number of cycles they are good for?
And a higher voltage! They are intended for devices that struggle with 1.2V from NiMH batteries.
The linked ad says 1200 cycles…
It also says:
“Reduce global warming by 30%” 
It’s not clear what charging algorithm these things need.
Constant 5V input.
Have you considered making a combined storage case/ charger so people don’t need to go out and buy yet another different battery charger?
I’ve a got different brand’s lithium 1.5V AA rechargeable battery set and that’s what they do. It’s a great idea and makes them easier to sell.
Problem with leaving cells in an unpowered charger is always the drain. Not sure what the technical term is, back current?
I’m not convinced these are superior to the USB -C cells available from Xtar (though, from a safety perspective, the thought of using two mis-matched Lithiums because one only has a single USB-C cable on them at the time, terrifies me).
