Eventually if you leave it sitting there for 5-10 years it will probably not work.
The battery size depends on the size of the engine. The larger the engine size the more cranking amps are required. A small 12.5 HP will only require around 190 amps while a 22HP will require closer to 360 amps.
Remotes, digital cameras, and portable CD players require the use of an AAA battery, which are the smallest size battery sold in retail stores. They are so compact that they can be sold in two to twelve packs. Customers can use these batteries in small appliances that may not require a lot of energy to operate smoothly. The lifespans may vary according to brand, but usually endure as long as a regular size battery.
You can use a battery in any electrical device that does not require being plugged in. All mobile vehicle with and electric starter uses a battery(usually placed under the hood or bonnet or close to the engine) you can however relocate the battery into you trunk/boot or where ever you want it to be along as you have the proper wire size.
When you go to buy a battery they can tell you the correct size.
Depends on the size of the engine in the boat.
Most use a small 12 volt battery.
Most cars use a cable, spring, and latch... it won't require a battery.
The fuse you use is determined by the load on the circuit and the size wiring used in that circuit not the battery voltage.
All Tamagotchis require a CR2034 battery.
They use a 1/3N 3 volt battery. AimPoint models which do not use AA batteries also use the same battery.
AAA
You can use modern size C