Hyundai i20 flat battery issue

233sqn · 11 Dec 2016

Hello all

Just had to go out my son’s Hyundai i20 2010, non-starter with flat battery.

When I got there battery was almost turning the engine over but not quite enough, but it wasn’t totally flat. I hooked up jump leads and it started immediately and is fine now, except that the on-board clock and trip meter have reset as if the battery had been disconnected.

Is this normal does it suggest a fault somewhere?

Thanks…

Burnerman · 11 Dec 2016

I wouldn't worry about anything for now, the high drain on a low battery can easily cause this - sometimes the radio memory is lost too.
Has the Hyundai been standing a while?
John

Peter.N. · 11 Dec 2016

It was probably the act of trying to start with a flat battery that reset everything, the voltage would have dropped below the critical point.

Peter

233sqn · 11 Dec 2016

Thanks for your replies folks..... I'll keep my fingers crossed!

DaveHerns · 12 Dec 2016

If the battery is as old as the car- 6 years- it's probably due for replacement. Tell them to get it tested. If we have a cold winter, it's likely to finish it off.

233sqn · 13 Dec 2016

And it failed again tonight! Restarted on jump leads drove it home and within 3 hours it was flat again. Can't see anything causing it to drain so i think it's all pointing towards a duff battery, it's the original so perhaps it's done ok

JohnD · 13 Dec 2016

six years doesn't seem long to me.

Burnerman · 14 Dec 2016

I'd say six years was minimal life for an OE battery, but of course we don't know what use it has had. For sure, a motor factor can happily put a heavy load test on the battery and sell you a new one if need be.
Its also doing basic checks on the charging system - with the engine running, you should find the battery voltage to be around 14.4v.
John

Hyundai i20 flat battery issue

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