@ bubblemaker
Hi Marcel,
i will try to explain.
The battery has 12,6V and a capacity of 9,6Ah.
The used LED (SST-50) need 3,6V with 5A for full power.
The electronic (buck driver) inside the LED-head change the 12,6V to the needed 3,6V.
The total power consumption of the LED is 3,6V x 5A =...