Charge AC200l via Coach Battery

[Rossodinho]

Can I effectively charge my Bluetti AC200L from my coach lead-acid batteries, which are being charged by the alternator through a Sure Power multi-battery isolator?

I’d prefer not to modify the existing wiring. Would adding a DC-DC charger such as the Bluetti D40 be the best way to do this, or can I simply use the Bluetti lead-acid battery charging cable directly from my coach batteries?

[Zoomerange]

I think you will limited your input received to around 100 watts using a lead acid to 12/24 cable. But it can be done. The cable they sale is a MC4 to alligator clips , the mc4 ends will plug into the Solar charging cable to XT90 .