Battery/alternator

[Matt]

Right so battery ran flat the other day, got boosted of the lorry, sprint the day at work (care work in home, so about 10 stop starts. And about a mile in between) on second day at work today. And the car is trying its hardest to start. The time it takes to turn over you can hear there is no life left. So what is up with it? Is it going to be the battery or alternator?


If it was the battery which battery from halfords do I get?
Or what details of the battery, so I can go scrappy haha


Also could it be the alternator not charging? I have no idea, really hoping its the battery as cba with trying to change the alternator