The NP-98 is a NP1 battery offering 98 Watts of power. This battery is well suited to power sound equipment and various other accessories. The larger capacity NP1 should save you from switching or rotating batteries and power your kit for a good majority of the day, subject to your kit. The NP-98 battery is fantastic for today's sound-recordist and can be used in conjunction with our APD power distribution box or regulated NP1 adaptor shoes. This particular version "D" will allow data communication to NPD-8S when used with NPD1 or other NP1 shoes and cups where the data pins are available.