There is nothing in the specs for either true cell volts or recharging.
I have not looked at these before. I am looking for the truly ultimate solution to my battery needs. I dislike the usual options: so-called “rechargeable” alkaline (very few recharges then failure); both NiCad and NiMH have too-low voltage per cell for my camera, nor do they hold a charge for long either in-use or between uses.
Somebody should use Lithium chemistry to fix these problems.
Is that what’s been done with these “Ultimate” cells to justify the exorbitant prices?
I know Lithium Ion cells can give up to 3.6 volts per cell nominal and 4.1 volts fully charged. Lithium Iron Phosphate (LiPO4) cells are 3.2 volts nominal. The pictures shown are really not helping with the voltage per cell question; the “9 volt” batteries might really be anything from a nominal 9.6 to 10.2 volts if based on the more common Lithium chemistries.
Otherwise, what… Standard 1.5 volts each for the standard AA, AAA, C and D form factors?
If they are not rechargeable and standard voltages, I see nothing “Ultimate” about them; quite the contrary.