# Battery information

**URL:** <https://discuss.bluerobotics.com/t/battery-information/3474>\
**Category:** General Discussion\
**Created:** [October 7, 2018, 9:10am UTC](https://discuss.bluerobotics.com/t/battery-information/3474 "2018-10-07T09:10:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Stesso](https://avatars.discourse-cdn.com/v4/letter/s/3be4f8/32.png) [@Stesso](https://discuss.bluerobotics.com/u/Stesso)\
**Post date:** [October 7, 2018, 9:10am UTC](https://discuss.bluerobotics.com/t/battery-information/3474/1 "2018-10-07T09:10:46Z")

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Hi,  
I need an information for The t200 thruster, i’m planning to use a 12v litium battery with 20000mah, so how many ampere the thruster absorbe at 12v at high speed? Because i want to use it on a kayak and i have to study how long the battery last,  
Thank you all

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**Author:** ![jwalser](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/jwalser/32/2234_2.png) [@jwalser](https://discuss.bluerobotics.com/u/jwalser)\
**Post date:** [October 8, 2018, 2:49pm UTC](https://discuss.bluerobotics.com/t/battery-information/3474/2 "2018-10-08T14:49:55Z")

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Please see the specifications here:

> **[T200 Thruster Documentation](https://docs.bluerobotics.com/thrusters/t200/#performance-charts)**
>
> The BlueRobotics documentation site has instructions, tutorials, and guides for using BlueRobotics' products. You can contribute through Github!

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**Author:** ![Stesso](https://avatars.discourse-cdn.com/v4/letter/s/3be4f8/32.png) [@Stesso](https://discuss.bluerobotics.com/u/Stesso)\
**Post date:** [October 9, 2018, 3:01pm UTC](https://discuss.bluerobotics.com/t/battery-information/3474/4 "2018-10-09T15:01:46Z")

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I studied better your performance chart and i think maybe that i found a solution to my problem, in the graphic between power and lbf i noticed that the maximum thrust at 12V is 7.8lbf , that corresponds to almost 160watt, so at full throttle should absorbe 13/14 Ah, is that correct?  
Thank you again

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**Author:** ![jwalser](https://sea1.discourse-cdn.com/flex019/user_avatar/discuss.bluerobotics.com/jwalser/32/2234_2.png) [@jwalser](https://discuss.bluerobotics.com/u/jwalser)\
**Post date:** [October 9, 2018, 3:16pm UTC](https://discuss.bluerobotics.com/t/battery-information/3474/5 "2018-10-09T15:16:44Z")

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Look at Current vs. Pulse width signal to ESC. Pulse width signal to esc is the same as the duty cycle on the output. 1900 = 100% duty cycle. The maximum current draw at 12V is 15A.

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**Author:** ![Stesso](https://avatars.discourse-cdn.com/v4/letter/s/3be4f8/32.png) [@Stesso](https://discuss.bluerobotics.com/u/Stesso)\
**Post date:** [October 9, 2018, 6:26pm UTC](https://discuss.bluerobotics.com/t/battery-information/3474/6 "2018-10-09T18:26:50Z")

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Perfect, thank very much!