The portable battery pack from Electric Eel Mfg. is designed for use with the Ecam Ace, Ace Wi-Fi and Ace 2 pipeline inspection cameras. The lithium-ion battery pack will operate units for up to five hours and features a battery gauge and low-power alarm. Output voltages are 12 volts via DC jack and 5 volts via USB port. Units come with a wall adapter for charging. 800/833-1212; www.electriceel.com.