KTM 450 SX ATV Owner's Manual page 116

MAINTENANCE ON CHASSIS AND ENGINE
Info
Even if there is no load on the battery, it still loses power steadily.
The charge state and the type of charge are very important for the service life of the battery.
Rapid charging with a high charging current has a negative impact on the service life.
If the charging current, charging voltage and charging time are exceeded, electrolyte escapes via the safety valves. This reduces the
battery capacity.
If the vehicle is started repeatedly until the battery is depleted, the battery must be charged immediately.
If the battery is left in a discharged state for an extended period, it will drain completely and sulfate, destroying the battery.
The battery is maintenance-free, which means that the acid level does not need to be checked.
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Switch off all power consumers and switch off the engine.
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Remove the rear fender. (
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Disconnect the minus (negative) cable of the battery to avoid damage to the vehicle's
electronics.
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