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The mkiv Supra Owners Club

Alternator or battery?


dannyspeed

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I've had my car in storage for the last few years and used a trickle charge system to keep the battery topped up. Now I've moved I've got the supra on the parents drive and left it for 4 weeks without the trickle charger. When I tried to start the car the battery was completely flat. I've jumped started it, drove it 10 miles (20min) switched it off and there wasn't enough juice in the battery to even turn the car over.

 

Battery is 3-4 years old and the car has been mostly stored over its life.

 

I've done a quick multimeter test across the battery at idle I'm I'm getting a 13.47 reading.

I understand that I probably should have went for a longer run to charge the battery a bit more but the multimeter readings seem a bit low to me.

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