# LifePo4 voltages

**URL:** <https://community.victronenergy.com/t/lifepo4-voltages/46243>\
**Category:** Q&A and troubleshooting\
**Tags:** battery\_protect, diy\
**Created:** [30 September 2025 10:32 UTC](https://community.victronenergy.com/t/lifepo4-voltages/46243 "2025-09-30T10:32:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Edgard](https://avatars.discourse-cdn.com/v4/letter/e/9de0a6/32.png) [@Edgard](https://community.victronenergy.com/u/Edgard)\
**Post date:** [30 September 2025 10:32 UTC](https://community.victronenergy.com/t/lifepo4-voltages/46243/1 "2025-09-30T10:32:05Z")

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Hello,

I have a Blue solar MPPT 100/30 charge controller and 700 Watt of solar panels in series giving me about 80V on a good day.

I have 2 200AH LiFePO4 batteries in series giving me a 24V system.

I have selected option 7 on the controller which is meant to be for use with this type of batteries.

The manufacturer states I have to use 14.6V for charging and 14.6 for float.

My charge controller is at 14.2V and 13.5V.  
I do not have the bluetooth cable to change these parameters and wanted to know if at these levels my system can work ok or that I have to change them to get a better more efficient setup.

I am surprised to see the recommendation for charge and float to be at the same level.

Much appreciated.

EB

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<div class="post-metadata">

**Author:** ![stok47](https://avatars.discourse-cdn.com/v4/letter/s/91b2a8/32.png) [@stok47](https://community.victronenergy.com/u/stok47)\
**Post date:** [30 September 2025 12:16 UTC](https://community.victronenergy.com/t/lifepo4-voltages/46243/2 "2025-09-30T12:16:26Z")

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14.2v and 13.5v float is perfect for 12v lifepo4

you will gain nothing by charging to 14.6v

its probably a typo 14.6v and 14.6 float, they probably meant 13.6v