The new sodium ion batteries can handle very cold weather, -40C and still have plenty of power.
They are becoming affordable,.. compared to lead acid car starting batteries.
And sodium beats lead, or even lithium as far as toxic gick.
They are about the same price as LA starting batteries now:
https://www.aliexpress.us/item/3256808924809169.html?spm=a2g0o.order_list.order_list_main.4.54d31802bpcON7&gatewayAdapt=glo2usa
4 of those will get you 12 volts.
That's kind of a kit so you'd have to build the box.
And use a BMS (battery management system) if you don't use it in a car.
Because they are new and expanding.
You could easily watch the price drop substantially after you buy them.