If I leave the car for a few days it will start first time less then 2 secs but if I am waiting for the mrs when she is in the shop / asda and I side lights and radio are on for a little bit then when I go to start again it takes time to start like the battery is a little flat now the radio and side lights should not take that much power from the battery as the radio as a 1 hour play without the engine on and side lights are nothing of HIGH power where can I start to look as maybe the battery is fine as I left the car for 4 days and here was
1c -2 c and it took less then 2 secs to start .... Thx