You should always use a battery hold down. Without one the battery flops around like a fish out of water. You can stress the cables if they dont have any slack in them (G100, for example), and the battery could jump up and hit the hood if the road (or trail) gets rough..
Just so, is a battery hold down necessary?
But another thing that's very important, and is often overlooked, even by those who take the time to check their battery's fluid level, is the battery hold-down. That's the device that holds the battery firmly against its tray. It's important. That's why the battery hold-down is there, to keep the battery in place.
Likewise, how much is a battery clamp? Replace your battery terminals in an hour for less than $20. Replace your car's badly corroded battery cable terminals with new ones in about an hour. New terminals cost less than $20.
Beside this, what is the purpose of the battery hold down?
That's why the battery hold-down is there, to keep the battery in place. Sure the battery takes a certain amount of bouncing around, just as the rest of the car (and passengers) do; but if the hold-down is loose, the battery can bounce and vibrate much more than it normally would.
How do I secure my car battery from theft?
Buy a system—a cross bar/lock or a lockbox—to lock the battery in. If you can't find one for your car, ask a mechanic if he can weld one. Temporarily pop in an old battery from your mechanic. (Be sure it isn't leaking acid and won't hurt your car.)
Related Question Answers
Will AutoZone install battery?
Yes we do, with certain circumstances. If it's an easy battery to change without removing other components yes, but if the battery is in the wheel well, uner the seat, in the truck, or another inconspicuous place no we can't change. This is a free service provided by AutoZone.How do I know when my car needs a new battery?
Here are seven telltale signs that your car battery is dying: - A slow starting engine. Over time, the components inside your battery will wear out and become less effective.
- Dim lights and electrical issues.
- The check engine light is on.
- A bad smell.
- Corroded connectors.
- A misshapen battery case.
- An old battery.
When should you replace your car battery?
General wisdom says you should replace your car battery about every three years, but many factors can influence its lifespan. You might need a new battery before the three-year mark depending on the climate where you live and your driving habits.Can you replace your own car battery?
Yes, You CAN Change Your Own Car Battery: Here's How.Is replacing a car battery easy?
To change a car battery, pop the hood of your car and locate the battery, which will be kept on either side of the car's frame. Then, insert the new battery, and connect the positive and negative terminals. Finally, tighten the terminal clamps with a wrench and spray them with lithium grease to prevent corrosion.Does AutoZone replace battery for free?
This is a free service provided by AutoZone. If it's not a battery we can change, we can refer you to a reliable shop that would be able to assist in the changing of the battery. We also offer free tearing of your battery, starter, and alternator.How much does it cost to replace a car battery?
Replacing your car battery will usually cost between $118 – $216, with most of those costs coming from the part rather than the labor. The repair itself is normally a straightforward job, so the real cost comes from buying the new battery.What happens if you disconnect the positive terminal first?
By removing the negative battery cable you are disconnecting the battery from the chassis of your vehicle. If you begin to remove the positive side before the negative and your wrench would make contact with any part of the vehicle, then you could cause a short in the system.When replacing a car battery which terminal goes on first?
Attach the positive (red) cable first, following with the negative (black) cable. Hand-tighten the nuts. Do not over tighten the terminal bolts; the following values are recommended: SAE (tapered) automotive terminal: 50 to 70 inch-lb. 
