advice on battery size for trolling motor

[keakar]

just bought a motorguide sw82 great white 24v trolling motor and need to get 2 batteries and an onboard battery charger for it so what are your recommendations that I should get for it?

im not as much wanting the brand name of a battery because im pretty sure i will get the walmart everstart.

im more interested about your recommendations for the size of it that I should get, im told they have different sizes of marine trolling motor batteries.

as to the 2 bank onboard battery chargers I definitely do want to get your brand name and size recommendations for that