M6 battery

[pjv997]

My M6 has barely been used the past month and I had this message yesterday:

“Battery charge very low.
Start engine immediately and recharge by driving for an extended period or using external charger.
Functions requiring power supply……..are switched off”

So put it on charge for 24 hours (Ctech charger), but today got the same message. Went for a drive for an hour and still have the message.

Car is now five years old and I thought the battery would last longer. But do I just need a new battery or is there something else to do/check first?

[pjv997]

Thanks for the responses. I’ll keep it on the charge and give the car a good run at some point this week and see if that solves the issue.