Lead acid batteries have problems like heavy weight, short life span, etc.
If this is well understood, the Cost-of-Ownership of Lithium batteries are far better than being perceived.
Lithium tech. is far better off, for being :
50% lighter 200% Runtime @0.2C discharge 400% usable capacity @1C discharge saving Many Hours of charging time 4X Cycle-life Long Shelf Life (over winter) Maintenance Free Non-hazardous & Eco-friendly