Question on switching to LiFePO4 batteries.

Sterling1 wrote:
I'm going to replace my 2 lead acid batteries in my Bigfoot truck camper with two 100ah LiFePO4 batteries. I've previously installed a 4 way battery selector switch to allow me to keep one of my batteries at a high enough charge level to start my generator (they are run in parallel). However, this won't be necessary (and probably won't work) with the lithium batteries and I will probably need to have it at the Both position to start my generator.

My question is is can I damage the batteries if I switch to the Both position when one battery is low and the other battery is fully charged?

do you have an auto start on your generator where you can just adjust the voltage it starts at? Personally, I would just take the switch out all together or just replace it with an on/off switch. as for your shunt, as long as it is installed on the negative of the battery (right at the battery) it will measure the charge and discharge from the batteries no matter how you're charging it. will it pick up the genny supplying power to the camper, nope but to me that's not what's important, we use them to monitor the state of the battery, when you're running on a genny or shore power who cares how much power is going to your lights.

Steve