A nice little device for powering a mount and addidional devices in the field. The inexpensive Powerstation includes a rechargable 12V/7Ah lead battery and the charging electronics powered by a 15V wall power supply. 12V with 10A max. is available by two cigarette lighter type connectors. In addition 3V, 6V and 9V are availabe via smaller connectors (these voltages are produced by parallel resistors from the 12V, so the usage results in loss of unused power).
The 7Ah battery is capable of powering my GM-8 for nights. In addition it's very nice to power scope cooling fans etc.