Both AGM and lithium batteries are available for competitive prices from most major brands, though as lithium technology continues to improve and AGM is phased out, the price factor may start to ...

We've tested and reviewed products since 1936. Read CR's review of the EverStart Platinum AGM 65 car battery to find out if ...

Life test measures how a battery endures repeated charge-and-discharge cycles at hot-climate engine-compartment temperatures. The more cycles endured while maintaining a higher voltage, the higher ...