EN-EL4a battery indicator reading of 2 - is it worth getting?

[Trig's]

Anyone have any ideas how much longer a EN-EL4a battery that has a indicator reading of 2 will last for before it becomes no good...

I've seen one for sale but has a reading of 2 so is it worth it or not for £39 :shrug:

I've already got one (0 reading) so would've just used this for a spare or I could use it all the time & keep mine (0 reading) for back up...

Or should I totally forget it??

 

[Trig's]

Take it that after 56 views it would be a :nono: then..... :razz: