How well a battery withstands repeated charge-discharge cycles in high temperatures. A higher score means better reliability and voltage retention over time. How long a battery can power a car if ...

How long a battery can power a car if the charging system fails. A higher score reduces the risk of failure if accessories are left on. The Interstate Mega-Tron II MT-24F is part of the Car ...

a few said that Interstate batteries don't hold up like they used to. One dissatisfied driver said, "Worst performance was with an Interstate Megatron battery for an F350 V10. It was replaced ...