Brandon G.
Stay away from the Big Jeff Audio 22AH Lithium Battery!
In October of 2024 I purchased a Big Jeff Audio 22AH Lithium battery for my car audio setup at a hefty price of nearly $400, I did an extensive amount of research prior to buying this, made sure I installed it properly with 0 gage OFC wire in parallel with my XS power battery with a 500-amp battery isolator. This is not my first rodeo; I know what I am doing. Fast forward a year and a half later I find the battery has swelled and busted the case, I immediately removed the battery from my vehicle and contacted Big Jeff Car Audio , sent pictures to them, and I was told that the battery (which has a typical life expectancy of 5 to 10 years) only had a 1 year warranty and a replacement would not be covered. I was offered a $40 discount on a replacement as a courtesy. They gave a long list of excuses to why the battery failed, none of which were their fault. They also stated that no other battery company warranties their batteries for over a year, that's a lie, XS power (who actually makes this battery for them) warranties their 3400 AMG batteries for 3 years. I was a first-time customer and that will be the last time I will purchase anything from them. To spend $400 on a battery, only to have it fail just after the warranty expired and the company not stand behind the products they sell is ridiculous.