Covert to 8V gell battery

Voltage and number of cells is the same.
Charger profile will follow battery type not arrangement of cells.
Miles will follow AH ratings less diminishing returns for weight.
If you go from 100ah to 150ah. In theory 10 mile range would go to 15 miles.
In practice expect 1/2 that increase. IMHO
Rodney would know more. He’s been there done that.

Read the latest Lithium thread. See how easy a first time conversion to 20s Nissan Leaf pack was.