Battery Posts
A: Usually, using the hardware that came stock with the battery and a little blue Loctite is more than enough to keep your connections secure. Be sure that you are using the correct spacers between the cables and the battery, if needed, for an aftermarket battery. Usually a star washer can be used beneath the heads of the bolts. If you, at one time, over tightened your battery terminals; your battery lugs may be stripped. Unfortunately, if this is the case, you will need to replace this battery.
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If you put no-ox or battery grease on the battery terminals, when they loosen, there will be no arcing, or open circuit. Gives one a chance to tighten the bolts, periodically