hi
I have noticed that the T-200 thrusters require a lot of current for their nominal operation. so for a runtime of about 30 minutes i would need a around 6 lipo cells that are V=14.8V 10Ahr and 25C. But i have noticed other teams use a single battery with similar ratings or at most 2. how is this possible
Hi @tejaa -
It’s often easiest to consider battery capacity in terms of watt-hours. A 14.8V nominal battery (4s) with 10 amp-hours has 148 watt hours (10*14.8).
This means that you could provide 148 watts to thrusters for one hour, or double that for a half an hour. The max discharge rate is determined by the battery’s C rating.
Understanding what your batterie’s capacity is vs. others used may clear things up!
so lets say my thruster works at 14V it would require 20 amps i.e 280 watts. 8 of those thrusters would need around 2240 watts. an my battery can give 148 watts an hr so this battery would work only for around 4 minutes? I am kinda new to all of this pls correct me if i am worng
Hi @tejaa -
It’s very rare to be in a situation where all thrusters are run at maximum power as you describe - and the maximum power deliverable by the battery is determined by the C value.
It’s typical to see currents with an 8 thruster BlueROV2 of 30-120 amps, and battery life of 20 to 120 minutes, depending on the conditions and how aggressively the vehicle is being operated.
The maximum continuous current, and the burst current capacity can be found in the technical details.