Author Topic: Battery age (Read 1568 times)

chrisv · « **on:** August 25, 2017, 05:21:38 PM »

Hi,
Is there any way I can find the age of my battery? It is a 2011 cvt which I bought 2 years ago. The battery fitted is a bosch silver 40ah which may not be the original so hopefully it is a replacement. Static voltage after standing overnight is 12.7 but I no longer have the kit for a discharge test,
Chris

culzean · « **Reply #1 on:** August 25, 2017, 05:57:27 PM »

That voltage looks good, there should be a date on the battery (I always write the date I fitted a battery on top with a permanent pen pity everyone doesn't). Trouble is date is probably on one of the sides, so may have to remove battery to find it. I doubt Honda would fit a Bosch silver as OEM, so I would guess its a replacement.

Have you had any trouble starting ? A good test may be to turn headlights on and start car, lights should dim a bit (a good battery voltage drops to around 9volts when starting).

Being a CVT means you need a good battery as cannot be bump started.

Jocko · « **Reply #2 on:** August 25, 2017, 06:00:55 PM »

From what I found Bosch batteries have a laser etched code which includes the month and year of manufacture. I found this, among other stuff.
https://bmwops.wordpress.com/2012/08/24/how-can-i-tell-how-old-my-bosch-car-battery-is/