Discover the best Automotive Replacement Portable Power Supplies in Best Sellers. . Check each product page for other buying options. Need help? Online shopping from a great selection at Automotive Store. . When adding battery power to your vehicle, there are two ways to do it – with a fixed, permanent installation, or with a portable, rechargeable battery pack. Also called Solar Generators”, all of our picks are. . Powerful & Compact: 1,500W AC output with 3,000W surge peak powers appliances like AC units, fridges, and electric pots. With a 1,070Wh capacity, lightweight design (23. These compact and versatile devices are essentially portable batteries that can be charged at home or in the car, and then used to power up smartphones. . XGen is a highly adaptable and energy-efficient power solution, offering multiple output options (120V, 208V, 240V, 480V) to ensure high performance, flexible operation modes, and broad compatibility across diverse applications.