Unit does not have a battery so I have no way of testing it, sold as is.The Tandy 1400 HD 25-3505 Vintage Portable Computer PC is a piece of computing history that hails from Japan. This vintage laptop from Tandy is a collectible item for computing enthusiasts and vintage technology aficionados. While it is missing its battery and has not been tested, it holds the potential to bring a touch of nostalgia and retro charm to any collection or workspace. With its unique design and historical significance, this portable computer offers a glimpse into the past of computing technology.