RAK19007 with LiFePO4 18650

Hi All,
I’d like to put 1 or more 18650’s of LiFePO4 chemistry with a RAK19007 or any RAK1900x series board. Any directions on this.

Thanks in Advance.

Welcome to the forum @gvence

The charger chip on the base boards support only Li-Ion batteries, Li-Po might work as well

LiFeP04 seem to have a rated voltage of 3.2V and max charging voltage of 3.65V.

Li Ion have a rated voltage of 3.6V and a max charging voltage of 4.2V.

That means the charger chip on the BaseBoards might destroy you LiFePO4 battery or even cause an explosition or fire.

Good morning,

Maybe I can help because I already did, I think that is what you are looking for, 2 or 3 batteries (in in parallel. Take a look in the photo below:

In the RAKBox-B4 Outdoor enclosure, you have space for until 3 batteries, but pay attention that in the battery case, the connection between batteries MUST BE parallel to guarantee voltage between 3.0 and 4.2 for LiPo

For example for batteries that I have: LiitoKala 25R-JT 18650 2500mah INR18650-25R

  • Product parameters:

  • Model:INR18650-25RM
    Voltage: 3.6V
    Storage temperature: Normaltemperature
    Working temperature: -20 ℃ ~ 80 ℃
    Material: Lithium
    Size: 65*18MM
    Charging Voltage: 4.2V
    Continuous Discharge Current:Max 30A
    Continuous Charge Current:Max 4A

I hope that it be helpful