My new mondeo had its original ford battery in when I bought it, a few times it pinged up as battery low and shut down unessecary drains on the battery like the stereo. Figured it was just down to cold weather but the dealer offered to pay for a brand new one so I figured a free battery is a free battery. Purchased a yuasa from halfrauds going by what their systems suggested for my car and the dealer refunded the cost.

But my battery issues remain, when sitting in the car with the car ignition off but say the headunit on playing music in the one hour mode, it will maybe make it 5-10 minutes before pinging up battery low.

When I had my focus I could sit in it, engine not running, and watch 2 or 3 dvds back to back on the head unit off the usb and it never once said battery low and it would still start first time afterwards with no hesitation.

Is there something more suspect going on why my mondeo keeps saying battery low so quickly

the batteries dont come fully charged so I suspect the issue is moreso that it needs to get up to voltage....

How much did you pay for that battery, as if I was you, I would take it back then get your money back and then go get a bosch s4 or s5!

The battery has been in the car sinse december. Been on plenty of long motorway drives in that time for hours and hours at a time.

I did want to go for a bosch, had bosch in my focus, that I also got from halfrauds, so when I did the halfrauds online checker for the mondeo, it only come up with the cheapy halfrauds own or the yuasa for 105quid so I assumed bosch didnt do one for the mondeo and that the yuasa wqs the bosch equivalant. Would be too late now to take it back.

Hmm I have the s4 in my car and it works fine... Anyway, check the voltage when engines off what is it?