# Dual battery controller

**URL:** <https://discuss.bluerobotics.com/t/dual-battery-controller/5912>\
**Category:** Power Supplies\
**Tags:** news\
**Created:** [September 1, 2019, 12:15am UTC](https://discuss.bluerobotics.com/t/dual-battery-controller/5912 "2019-09-01T00:15:52Z")\
**Posts on this page:** 1\
**Showing post:** 47

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**Author:** ![FIN\_TKG](https://avatars.discourse-cdn.com/v4/letter/f/a87d85/32.png) [@FIN\_TKG](https://discuss.bluerobotics.com/u/FIN_TKG)\
**Post date:** [March 20, 2023, 12:46am UTC](https://discuss.bluerobotics.com/t/dual-battery-controller/5912/47 "2023-03-20T00:46:19Z")

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The pololu MOSFETs are equipped with Reverse Voltage Protection.  
I hope connecting this MOSFET to each battery will prevent circulating current.  
Of course, this MOSFET does not have a low voltage protection function, so I need to monitor the three battery voltages using an Arduino or something similar, and use the MOSFET to cut off the electricity from the battery that is at low voltage.

I would like to know if there is any circulating current protection in parallel battery connection.

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