Technical Battery Drain Help

[Red1Leader]

Have a bit of an issue with power drain from the battery, if I drive it every day then no probs, but leave it for about 3 days and there is not enough oomph to start, I have checked the alternator and all looks well and it charges the battery after a run.
Anyone got any ideas.

 

[T14086]

multiplas know known for battery drain or should I say common problems,have you had your battery tested properly.

 

[Red1Leader]

I put a new battery on 2 years ago and it failed so had it replaced under warranty last month, could this be a symptom?

 

[T14086]

Is it correct battery of correct rating & not a cheap battery? Is alternator charging correctly?

 

[Red1Leader]

Battery is correct, I even put a larger cranking ampeage one on, and I have had the alterator checked all all looks ok. As I say it is fine when used daily it is only when it has stood for a few days.

 

[T14086]

standard radio,any accessories fitted etc?

 

[Red1Leader]

non standard radio that switches off with the ignition, no other extras.

 

[T14086]

I'd do the battery/charging & drain tests next.

 

[Red1Leader]

what does that entail?