$2.80 for a pack of 4AA energizer. Use Battizer charge for 10 times.
Repeat for 10 cycle, you get 100 charges, 10 set of 4AA at $28. , with risks .
New Eneloop with 1500 cycles rated, at probably Less than $20 for 4 AA,
You do the maths.
I see the Battizer as a expensive paper weight....