DW had a little trouble starting the car (2015 Forester) on some cold days so I got the battery checked at AutoZone. It rang up 12.7V. The guys commented the battery is no good.
OEM Forester battery is really smallest they could put, with just CCA of 390. So I am not actually surprised to see voltage down. After he checked the battery, when I went to start the car, it showed 11.5V but the car still started in one shot. So my questions are
- Should I REALLY replace this battery? I don’t have jumper cables or a starter pack and I really don’t want to buy either of that.
- If I should replace the battery, is it worth investing $270 for (Northstar Group 35) AGM batteries as opposed to $90 for lead acid? What advantages do they offer? Is it worth investing in these batteries that they will beyond 3X lead-acid batteries?
Thanks in advance.