Walmart Battery Terminals: What to Check Before You Buy
The short answer
Walmart generally carries replacement battery terminals, also called cable ends or battery clamps, in the automotive section of many stores and through its online listings. Whether a terminal from Walmart is right for your car depends on three things: the type of battery post your vehicle uses, which side of the battery (positive or negative) you are replacing, and the size of the cable the terminal must fit. In-store stock varies by location, so check your local store's listing or call ahead before making a trip. This article does not include current prices or availability, because none were confirmed for it.
Identify your battery post type first
Battery terminals are not universal. The connection style on your battery determines which terminal you need, and it can differ between vehicles from the same manufacturer depending on model year, market and battery fitment. Look at your current battery before shopping.
Top post: round, tapered lead posts stick up from the top of the battery, and the terminal clamps around them. This is the most common layout on many cars and trucks. Side post: the battery has threaded holes on its side, and the cable end is bolted in with a short bolt. This layout is common on many older General Motors vehicles. Dual terminal: some batteries offer both top and side connections, which lets one battery suit either style of cable. Stud or other styles: some marine, lawn equipment and specialty batteries use threaded studs with wing nuts, which need a different kind of terminal.
If your vehicle has a side-post battery, a top-post clamp will not work, and the reverse is also true. Adapters exist, but replacing the terminal with the correct type is usually the cleaner fix.
Match positive and negative correctly
On standard top-post batteries, the positive post is slightly larger in diameter than the negative post. Terminals are made to match, so a positive terminal will be loose on a negative post and a negative terminal will not fit over a positive post. Product listings and packaging usually state which side a terminal is for, and many terminals are marked or colored red for positive and black for negative. If you are replacing both ends, buy one of each rather than two of the same.
Check the cable size and connection method
The terminal also has to attach securely to the cable. Cable thickness is described by gauge, often written as AWG, where a smaller number means a thicker cable. Check that the terminal you choose is rated for your cable's gauge. If the gauge is not printed on the cable jacket, a parts counter or your vehicle's service information can help confirm it.
Bolt-on or clamp-style terminals hold the cable under a plate or saddle, so you can install them with basic hand tools. Crimp-on or solder-on terminals give a more permanent connection but require a proper crimping tool or soldering equipment. Some vehicles use cables with extra wires, such as sense leads or accessory feeds, attached at the terminal. A basic replacement terminal may not have a place for these, so check that it can handle every wire your original terminal connected.
Material and build quality
Replacement terminals are commonly made from lead, plated steel, zinc alloy, brass or copper. Softer lead terminals tend to conform closely to the battery post, while brass and copper conduct well and resist wear. Thin, lightweight terminals can crack or loosen over time, so a sturdier build is worth considering on a vehicle you plan to keep. A tight, clean connection matters more than the material itself.
When a new terminal may not be enough
Corrosion that has crept down inside the cable insulation, a cable that is frayed or stiff, or green or white buildup that keeps coming back are signs that the cable itself may need replacing, not just the end. In that case, a complete pre-made battery cable for your vehicle may be the better purchase. Persistent corrosion can also point to a charging or battery problem worth having checked.
Installation and service at Walmart
Many Walmart locations have an Auto Care Center that offers battery-related services. However, no information was available here on whether a given center will replace battery terminals or cable ends, or what that would cost. If you would rather not do the job yourself, contact your local Auto Care Center to ask before buying parts.
If you do the work yourself, disconnect the negative cable first and reconnect it last to reduce the risk of a short circuit. Clean the battery posts before fitting the new terminal, and tighten the clamp firmly without forcing it. Disconnecting the battery may reset radio presets, clock settings or other stored data on some vehicles, so check your owner's manual for any steps needed afterward.
Quick checklist before you buy
Confirm your post type: top post, side post, dual or stud. Confirm which side you need: positive, negative or both. Check that the terminal fits your cable gauge. Account for any extra wires attached to the original terminal. Inspect the cable itself to decide whether a whole cable is the better fix. Check your local store's stock before you go, since availability varies by location.