I've had a 2018 Mazda CX9 GT AWD since new.
I typically 'top off' my cars' batteries when it starts to get cold. I have a NOCO Genius battery charger/maintainer.
I started with my 2018 GTI which has a 12 month old Interstate AGM, same age as my CX9's battery. My NOCO turned 'green' (i.e. full) in about an hour. Meanwhile, the CX9 has been plugged in for 10 hours and is still charging. Admittedly, the NOCO is only 1.5 AMP so no exactly a powerful charger.
Both cars are used in a similar fashion. Lots of short trips with the occasional longer trip. The fact that the CX9 needs 10+ hours to top off the battery leads me to believe that the way the car is programmed (i.e. the car does not properly top up the battery) has something to do with the weak battery life).
My CX9 is on its 4th battery. The GTI got it's 2nd just 12 months ago.
Thoughts?
I typically 'top off' my cars' batteries when it starts to get cold. I have a NOCO Genius battery charger/maintainer.
I started with my 2018 GTI which has a 12 month old Interstate AGM, same age as my CX9's battery. My NOCO turned 'green' (i.e. full) in about an hour. Meanwhile, the CX9 has been plugged in for 10 hours and is still charging. Admittedly, the NOCO is only 1.5 AMP so no exactly a powerful charger.
Both cars are used in a similar fashion. Lots of short trips with the occasional longer trip. The fact that the CX9 needs 10+ hours to top off the battery leads me to believe that the way the car is programmed (i.e. the car does not properly top up the battery) has something to do with the weak battery life).
My CX9 is on its 4th battery. The GTI got it's 2nd just 12 months ago.
Thoughts?
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