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I need to increase my battery capacity and i am thinking to replace my 24V acid lead battery bank by a 48V lithium batteries.
i can reuse my smartsolar 150/35 charges but i would also like to reuse my multiplus conpact 24/1200 inverter.
is there any way to reuse the inverter/charger? Perhaps with a 48/24 dc-dc converter?
thanks
It would be easier to connect two smaller 24V batteries in parallel. You already have all you need for 24V.
Its an old thread, but I have the same problem and im thinking about a unconventional solution.
Situation: MP2 24/3000 with 2600Wp mixed DC and AC-out1 (HM-1500); 2x 7,14kWh (JK-BMS)
Works perfekt! I prefer great Loads when Sun is shining and i can use the 1400W AC form Hoymiles directly. I try to avoid Loads from Battery over 1500W because bad efficiency.
SOLUTION. (I'm still thinking about)
I'm planing to buy a MP2 48/5000 GX and run a second ESS (all really Off-Grid!) with a DIY 14,3kWh Battery. This device creates an own Grid of course, which in can connect to my AC-IN of the 24V System. The complete Load is on the 24V ESS at AC-out1 and. The Power from 48V ESS is passing through.
Now I can easy limit the Grid-Input (from 48V ESS) at my 24 AC-in to about 2500W. If i need more Power at 24vAC-out1, it should easy come form the 24V battery or AC-coupled HM1500.
The great benefit is, that i don't have to sell my existing hardware. And if the 48V Battery is empty and I loose Grid at AC-in form 24V ESS, I have still a working 24V ESS as a Backup.
Please tell me, what are you are thinking about this! I have never read about such a setup. It can be seen as 24/48v Hybrid Battery-System or a Cascade of MP2. If there are some errors in my plan, let me know. I still have not bougt anything.
PS: Ihr könnt auch in Deutsch antworten, ich habe nur die Sprache dieses Thread aufgegriffen, falls der Ersteller seine Lösung gerne teilen möchte.
