What size battery is needed?

A battery should be big enough to allow reliable cold starting. The standard recommendation is a battery with at least one Cold Cranking Amp (CCA) for every cubic inch of engine displacement (two for diesels). CCA rating is an indication of a battery’s ability to deliver a sustained amp output at a specified temperature.

Specifically, it is how many amps a new, fully-charged battery can deliver at 0 degrees F for 30 seconds and still maintain a minimum voltage of 1.2 volts per cell.

A rule of thumb says a vehicle’s battery should have a CCA rating equal to or greater than engine displacement in cubic inches. A battery with a 280 CCA rating would be more than adequate for a 135 cubic inch four-cylinder engine, but not big enough for a 350 cubic inch V-8.

Battery manufacturers have been trying to outdo one another by introducing batteries with higher and higher cold cranking amp ratings. There was a time when a battery with a 550 CCA rating was considered a powerful battery. Now there are batteries with 650, 750, 850, and even up to 1,000 CCA available.

One reason for the “amp wars” between battery manufacturers is that bigger is definitely better. How much overkill is really necessary to assure reliable cold weather starting? Two amps per cubic inch of engine displacement? Three, four or five amps? The bottom line is bigger sells better.

The difference between a group 23 battery and a group 24 battery is 1/2″ in length, 1/16″ in width and 7/16″ in height. It does not sound like much, but it is enough of a difference that the longer battery might not fit the space provided for the shorter battery if a swap were attempted.

Since there is little or no effort on the part of vehicle manufacturers to standardize original equipment battery dimensions, aftermarket battery suppliers are faced with the task of trying to cram as many amps as they can into the smallest battery case that will fit the most applications.

Consolidation reduces the number of different batteries a jobber has to stock to cover the various vehicle applications. It also simplifies manufacturing by building fewer basic battery sizes.

The most powerful battery in the world will not be able to do its job properly if battery cables are not up to the job. One often overlooked source of cranking trouble is undersized battery cables. If the original equipment cables have been replaced with cheap ones with undersized wires, the cables may not be able to deliver the battery’s full amp load to the starter.

Why did my battery light come on?

The battery light comes on when there is a problem in the battery charging system. Because your car is so dependent on the battery all cars have a battery light on the dashboard that is designed to warn you if the charging system fails. A simple circuit reads the voltage that the alternator is producing and turns the battery light on if it’s too low. If the battery light stays on while you’re driving, the most common problem is a broken, damaged or loose belt. Total failure of the alternator another possibility.

Why doesn’t my power window work?

Many times a power window will only roll up. Or just down. Or do nothing at all. If there is an issue with the flow of electricity to the power window. These problems may happen. Window doesn’t do anything when using the switch. Only rolls up or down. Many times the switch has false contact and doesn’t allow the circuit to continue to the motor/regulator that drives the window up and down. The motor/regulator can be damaged and doesn’t function correctly, Blown fuse, short circuit. Whichever occurs. We can fix it. By diagnosing the problem and fixing it right the first time.

Why my headlights don’t come on

If both headlights are out at the same time, the problem is likely to be electrical. The problem can consist of a blown fuse, bad connection, faulty wire, bad switch or short circuit. If a blown fuse accurse, possibility can be either of those problems. We at Delta Auto Care specialize in electrical problems. Our technicians are knowledgeable in electrical repair.

Why is my check engine light on?

A glowing or flashing Check Engine or Service Engine Soon light alerts you to problems in your vehicles on board diagnostic system that should be checked out as soon as possible. Many times you won’t notice a difference in your vehicles performance, but can cause failure of a major electronic component. On board diagnostics systems are very complex and require a fair amount of expertise as well as special tools to troubleshoot. Here at Delta Auto Care we have the latest diagnostic tools to better troubleshoot your vehicle.