# Parallel battery connection for four T500

**URL:** <https://discuss.bluerobotics.com/t/parallel-battery-connection-for-four-t500/21664>\
**Category:** Batteries and Chargers\
**Tags:** t500\
**Created:** [September 25, 2025, 8:19am UTC](https://discuss.bluerobotics.com/t/parallel-battery-connection-for-four-t500/21664 "2025-09-25T08:19:33Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sample](https://avatars.discourse-cdn.com/v4/letter/s/4491bb/32.png) [@sample](https://discuss.bluerobotics.com/u/sample)\
**Post date:** [September 25, 2025, 8:19am UTC](https://discuss.bluerobotics.com/t/parallel-battery-connection-for-four-t500/21664/1 "2025-09-25T08:19:33Z")

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Hi BlueRobotics,

We have four of your Lithium-ion batteries (14.8 V, 18 Ah) and are looking for the best way to safely connect them in parallel to power four T500 thrusters along with supporting electronics.

We already have a power distribution board rated for 300 A continuous current, so the main question is the parallel battery and connection to the PDB. Based on our calculations, the battery connection should safely handle around 120–150 A continuously. Ideally, we would also like to be able to charge the batteries in parallel (in a safe manner) to avoid four individual chargings, and have some form of power sensing.

Could you recommend a suitable setup for this application?  
Thank you!