Hello, first time poster, please have patience.
I am planning to build a power box with my son as a learning opportunity (for both of us). It will use 4S 60AH Lifepo4 cells with a BMS. We'll add USBs, 12V cigarette lighter and probably use a 500W inverter. Separately, I have an off grid solar array with a 24V 1300AH SLA battery bank and Midnite Solar Classic 150 charge controller. I would like to charge the power box from the 24V bank (via relay) using the "waste not" feature of the Midnite CC.
My question is this. If I feed an MPPT charge controller in the power box from my 24V bank, how do I limit the current? I am afraid the battery box will pull too much current from my large battery bank and will overwhelm the batteries, CC, BMS. How should I limit current coming out of my battery bank? I am thinking about this situation properly?
Hope this question makes sense...
Thx.
I am planning to build a power box with my son as a learning opportunity (for both of us). It will use 4S 60AH Lifepo4 cells with a BMS. We'll add USBs, 12V cigarette lighter and probably use a 500W inverter. Separately, I have an off grid solar array with a 24V 1300AH SLA battery bank and Midnite Solar Classic 150 charge controller. I would like to charge the power box from the 24V bank (via relay) using the "waste not" feature of the Midnite CC.
My question is this. If I feed an MPPT charge controller in the power box from my 24V bank, how do I limit the current? I am afraid the battery box will pull too much current from my large battery bank and will overwhelm the batteries, CC, BMS. How should I limit current coming out of my battery bank? I am thinking about this situation properly?
Hope this question makes sense...
Thx.