# Replace UR battery by IMR with lower mAh [closed]

I am replacing a shaver’s battery, a Braun Silk Epil 5.

It uses a Li-Ion battery manufactured by Sanyo for Braun.
According to my research it must be a UR Battery like the UR18500L :

Size : 18500
Volts: 3.7V
Capacity : 1300mAh/4.8Wh


My question is pretty simple (and maybe dumb), the UR Batteries are pretty expressive.
Is it possible to replace it by an IMR Battery that has the same voltage but less mAh (Usually used for e-cigs)?

If it is, what would be the consequences ?