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The things that will affect your snowmobile battery the most are temperature and vibration.
As your snowmobile is driven, vibration causes active plate material to loosen and fall to the bottom of the battery case and can break inter-cell welds and grids. Loss of material decreases the life of the battery and could also cause shorts.
The electric current generated by a battery is produced when a connection is made between its positive and negative terminals. When the terminals are connected, a chemical reaction is initiated that generates electrons to supply the current of the battery. Lowering the temperature causes chemical reactions to proceed more slowly, so if a battery is used at a low temperature then less current is produced than at a higher temperature. This can spell disaster if you are on a back woods trail in the dead of winter.
That is why it is important to choose a Snowmobile battery that can produce the Cold Cranking Amps and vibration resistance you need to start your sled right on time – EVRYTIME.