Hello. I am planning an Ambulance RV conversion solar system that will power some high-wattage items like a 9000BTU mini-split AC and a small microwave. This is my first full solar system set up. I have some experience with automotive DC wiring, but not much with residential AC electrical. Below are the components I'm planning on using. Please let me know if I've mis-matched or made any bad choices. THANK YOU
MPP all-in-one inverter/charger. 24V 2.7kW Model
4x 250W solar panels (total 1000W)
Undecided on brand/model, but I'm considering these if I can make them fit:
1x EG4-LifePower4 Lithium Battery | 24V 200AH
A few things I have not yet learned is:
- what's the best way to tie in the 24v battery to the 12v vehicle. I know this can be done with a "step-down" unit, but is there a better method used in solar-vehicle applications?
- How do you tie in the vehicle's alternator so that it can supplement the battery charging while driving? Can this just be spliced in to the MPPT input or is additional componentry needed, like a separate DC-DC charger connected straight to the battery?
- Can the solar system also top off the vehicle's AGM starting batteries or would this require a separate charger with a different profile, etc?
Thanks for any tips/pointers/corrections on this idea!
MPP all-in-one inverter/charger. 24V 2.7kW Model
4x 250W solar panels (total 1000W)
Undecided on brand/model, but I'm considering these if I can make them fit:
Used SanTan 250W Solar Panel | SanTan Solar
store.santansolar.com
1x EG4-LifePower4 Lithium Battery | 24V 200AH
EG4 LifePower4 Lithium Battery | 24V 200AH | Server Rack Battery
EG4 Lithium battery 25.6V (24V) 5.12kWh with 200AH internal BMS. Made of UL Listed Battery Cells. Off Grid Solar Batteries - Off Grid System - Solar Batteries for Home - Lithium Solar Batteries - Deep Cycle Solar Batteries - Power Reserve - Solar Panels Plus Battery - LifePo4 - LifePower4 - Life...
signaturesolar.com
A few things I have not yet learned is:
- what's the best way to tie in the 24v battery to the 12v vehicle. I know this can be done with a "step-down" unit, but is there a better method used in solar-vehicle applications?
- How do you tie in the vehicle's alternator so that it can supplement the battery charging while driving? Can this just be spliced in to the MPPT input or is additional componentry needed, like a separate DC-DC charger connected straight to the battery?
- Can the solar system also top off the vehicle's AGM starting batteries or would this require a separate charger with a different profile, etc?
Thanks for any tips/pointers/corrections on this idea!