We have availability of Anton Bauer and BEBOB block batteries.
The Anton Bauer VCLX, is a smart battery with nickel metal hydride cells. It offers up to 560 W/h allowing to power devices for several hours. It has 14V and 28V outputs for high voltage film and lighting devices.
The BEBOB Cube is a modern block batterie with Ion Litio technologie which provides 1170 W/h. It is probably the powerfully block batterie in the market. It has 5V (USB), 12V, 24V and 48V outputs and a integrated charger. It can directly power an ARRI SkyPanel S30 or S60.