Does iSTAR Pulsar use an internal battery? Follow No, the product has no internal battery to power it, iSTAR Pulsar requires a continuous external power source in order to function. For more information on powering iSTAR Pulsar, see here. Related articles How do I install a license/firmware update file to my iSTAR Pulsar+ unit? How accurate are the iSTAR Pulsar GPS timestamps Powering iSTAR Pulsar How to use iSTAR Pulsar