REPLACEMENT BATTERY ;; How do I select the right one

BlueonBlue

I have returned at least 2 or 3 Lion 3yr batterys over the years and also a Bosch S4 which is a 4 year to ECP instore.
Of course ECP policy can or could change and often I find its who you are dealing with on the day instore.

Lion 3yr batterys do have a bad rep they also are lower spec CCA and Ah which many cant understand let alone even notice but I generally got two years or more out of them then got another free via warranty all bought instore at ECP.
They were all physically bought from instore not via CP4L or online etc  so I had paid instore prices

If I was buying another cheap battery I would consider the 3yr DriveTec 012 online via GSM/ebay as it has higher CCA and Ah for £30 or £32 when discounted.

The cheap Lion 063 is a very popular size so generally somewhere around £35 discounted on CP4L and you can pick it up from your local ECP store .
So the 3yr warranty "may mean" you can return it back to your ECP store as thats where you got it.
CP4L is a ECP online site .
Many wont bother with the cheaper types and get Bosch S4  063 4yr discounted via the same CP4L and picked up from ECP generally around £20-25 more so about £55