This is a Lead Acid Battery with 240Volt A/C Wall Charger suitable for driving your Field box power panel.
12V7Ah Sealed Lead-acid Rechargeable Battery
Type: sealed lead-acid rechargeable battery
Voltage: 12V ; Capacity: 7Ah ; Weight: 2.13kg
Dimensions: 151 x 65 x 94 x 100mm
HHQ Australian 240volt wall charger.