Thruster draw too low current and power

I used 4* blue robotic T500 thruster and pixhawk 4 for unmanned boat project. But i only measured about total 55A in full throttle current by using 24V lithium polymer battery(15C) . This mean each T500 only draw less than 15A (360W). How should i get more power? This is less than the current which official announced 24V Full Throttle Current (Power) can reach 43.6A.

For differential thruster on boat, i setup 2 thruster as ThrottleLeft and the other 2 as ThrottleRight (function 73 and 74) in Pixhawk. Any suggestion would be greatly appeciated.

What mah capacity? This and the C rating tells you the max current the battery can supply (on paper).

The battery is 11000ma h

11 amp hrs* 15C=165a This is usually not realized but I suppose something else is limiting max current. Or the load condition you are testing under doesn’t demand the max current.

Thank for your reply. I also suppose something limit the current. But i have no idea. Pixhawk?