Replacement Lithium Ion Battery by Empire G. E. DS5370, E1055W, E1480W BLI-272 Simple installation. Just clip on, no tools required, all necessary Cut-outs for easy access to all ports. Printed in the UK using state of the art heat transfer process. Ultra-thin, lightweight, strong and durable design. Same day turnaround on all products we produce. Designed for BlackBerry Curve 8520 Only.