12v battery replacement supplier

Michael Cole · August 4, 2020

12v Battery replacement or alternative supply. Regards Mike

Herbie · August 4, 2020

Not one to waste words eh Mike? :laughing:

Assuming you're looking for one rather than offering to supply, this topic may help:

Herbie · August 4, 2020

Mike, this may sound like a daft question but you've only just joined the club and over in the 'New Members' area you asked if your vehicle is of the 'stop/start/ variety, which leads me to suspect that you've not had your car long and that you're new to hybrids - is that correct?

If so, what makes you think that your Battery needs to be replaced? Have you tried charging it overnight? Or maybe even just jump starting it and then going for an hours blast up the motorway?

I ask only because the 12V batteries on these cars are only small and don't have much capacity, so the car needs to be used regularly to keep it charged up. It's not exactly a regular occurrence but it's not unusual either for someone to leave their car at the airport while they are on holiday for a couple of weeks and come back to a flat Battery.

A conventional car has a starter motor that will draw 300A or more from the Battery to crank the engine so the Battery has to be big and beefy, often being a minimum of 75 or 80Ah. Hybrids don't have a starter motor as such and it only takes about 20A for a fraction of a second to boot the computers and get the car to the READY state. Because of this, Toyota/Lexus thought they could save some money by only using small capacity batteries and if I remember correctly, mine is only 42 or 45Ah. Great in theory, but the downside is that it goes flat quicker than a bigger one would.

It actually takes so little current to start my RX450h that I could (in theory at least) start it with a pack of 8 AA batteries!

I just don't want you spending loads of money to replace the Battery if all it needs is to be used more.