Thank youBelieve it or not, this is super common.
Many people want to use throttle 90% of the time, this is why throttle only intended ebikes are booming.
I just wanted to know about the range, I know more the better, but how much?
This is why I suggested RadMini, because it can carry 3 batteries, and make it 52V 63Ah+ (3,275+Ah).
But OP may not need that much.
If it's 48V, Luna sells 48V 24ah triangle battery, Jenny sells 48V 24.5Ah for Reention DP9, and rear rack can be whatever, let's say 48V 31.5Ah with using a 117pcs battery case like below, and you can have a 48V 80Ah battery.
Case-Ebike-Battery 48V High Capacity Electric Bicycle Battery Box Rear Rack Fat Bike Kits Shellcan.grandado.com