We Carry Everything from Laptop Batteries to Cell Phone Batteries and More. Everything from calculators to cash registers, cameras to laptops, and medical equipment to radios need batteries. We consider it more than “just a battery.” Whether you need a camcorder battery, computer battery, camera battery or more, Interstate Batteries is the best place to find high-quality batteries that meet your needs. Coupons, promo codes, deals, and 3.5% cash back savings for Interstate Batteries.