Some tips for taking care of your battery.

Image of a mechanic using a multi-meter to check the voltage of a car battery.Fall is upon us and it’s time to think about winter preparations. Among the many things on our lists, making sure our cars are in tip-top shape to handle the tough Minnesota winter is a big item with many little things to be done. Among those little things is something not so little if it fails – the battery. Because the battery powers all the lights and accessories in your car, you need to make sure it’s ready for the long, hard job of powering through winter. Here is a quick breakdown of tips for you to make sure your battery is good condition as we roll into cold weather.

Related: Minnesota’s Best Car Battery Service

Signs your car battery is about to die.

Car batteries usually last two to five years, depending on quality, operating conditions, and condition of the vehicle.

There are a few simple warning signs that will tell you it’s time for a new battery.
Long crank times in any kind of weather.

If your car takes longer to start than usual, especially if the battery has not been replaced in more than three years, this is a sign that the battery is wearing out. If the engine has to crank excessively in order to start, the battery should be checked. Keep in mind that cold weather affects the battery and its ability to perform, so it’s fairly normal for your car to start with difficulty in the wintertime. Everything slows down in the cold, including electric current. It is also hard to vaporize gasoline, and oil thickens up when it’s cold. Batteries put out only half their normal power when the temperature is freezing – so be patient, but be aware. If your car “cold cranks” in warmer weather, it’s a good time to change the battery.

Engine cranks, but won’t start.

The engine cranks, but won’t turn over. This a pretty solid sign that the battery is dying or already dead. You could get a jump start, but you’ll just need another one when you turn off the car. Driving around town, going from jump to jump might be a unique way to meet people, but let’s face it – it’s no way to spend a weekend. Get a jump and get a new battery.

image of jumper cables attached to car battery terminals.Too many jump starts will kill a battery.

Jump starting a battery too much will kill it. It’s hard on a battery when you basically shock back into action. If you have to jump start your car more than three times in a week, it’s time to replace the battery. One thing you can try that will get you through the interim is get the jump, then let the engine run for 30 minutes so the alternator can recharge the battery. Once this is done, shut off the car, wait two or three minutes, then try to start the car again. If it starts, turn it off, wait another couple minutes, then start it again. If it consistently starts, you probably won’t be stranded wherever you go next – but that doesn’t mean your battery is good to go. Your next stop really should be to get a new battery.

Engine won’t crank, won’t start, and there are no lights.

This is a pretty sure sign the battery is dead. Again, you could get a jump, but the battery has left the building – or the engine compartment, as it were. Something to consider in this situation is there might be a combined issue with the alternator, because that’s the part that keeps the battery charged. If the engine won’t crank, but you do have lights and other functions, then there could be other problems in the car’s electrical system or other areas of the engine. Some issues might be a bad ignition switch, a failed starter or solenoid (which usually causes a check engine light), or a poor electrical connection somewhere in the ignition system. Electrical problems should be properly diagnosed and fixed by a mechanic.

Your car starts fine one day, then does not start at all the next day.

There two battery-related issues that might cause your car to start intermittently or unreliably.

Battery terminals are loose, broken, or corroded.

A visual check usually will reveal if there is any corrosion or other problems with the battery terminals. You should check for tightness of cables, as well. If there is corrosion or the terminals are damaged, the battery will not perform at its best.

Parasitic draw on the battery is slowly draining its power.

Sometimes there is a condition somewhere in the electrical system called a “parasitic draw” that drains the battery of its power slowly, usually overnight. A certified mechanic can help diagnose, find, and fix this problem. If you decide to do it yourself, you’ll need a multimeter with amp capabilities up to 20 amps (A) and down to 200 milliamps (mA), and a fuse checker.

Simple battery maintenance will save you a lot of trouble.

  • Visual inspection to check for corrosion around the battery terminals. Look for a white powdery chalk-like substance. Corrosion affects electrical conduction. Clean the terminal with a wire brush. Never ever put baking soda on a battery to clean it. Coat it with grease before reconnecting the battery. The grease prevents further corrosion and improves electrical conduction.
  • Check the battery cables, as they are usually a prime cause of battery issues and are easy to check.
  • Make sure the cables are attached securely to the terminals and are not frayed, damaged, or falling apart. They should not wiggle or move around if they are properly tightened.
  • On older batteries with access to the cells, you can add distilled water to help the battery keep a charge.
  • Keeping a clean engine compartment in general prevents a lot of dirt and crud from covering the battery and collecting around the battery terminals, and possibly compromising its performance. It also makes overall engine maintenance and troubleshooting easier and less messy – and mechanic’s job a little easier if you have to bring your car in for a diagnosis.

SAFETY NOTES: Proceed with caution when performing maintenance on a battery. The sulfuric acid in batteries is highly corrosive and can burn your skin and eat holes in your clothes. There is even a slight danger of explosion. Always work in a well-ventilated area. Wear gloves and eye protection. Never lean over the battery when charging or testing it, or when jump-starting the engine. Keep a solution of water and baking soda handy in case battery acid gets on your clothes or skin. This mixture can neutralize the acid.

Related: Tips for Affordable Car Maintenance

image with text - Car Battery DiagnosticsAAMCO Minnesota Can Diagnose & Fix Battery Problems  

AAMCO Minnesota locations in Minneapolis, West St. Paul, Fridley, Hopkins, and Maplewood provide expert battery services that include diagnostics and testing. Based on the diagnosis, your Minnesota AAMCO mechanic will recommend the battery service that’s right for you, replacing only the components that are needed. If your car won’t start and you want help figuring out what’s wrong and having it fixed right, it’s time to call a mechanic and have it inspected and repaired. If you notice any of the symptoms mentioned in this article, or suspect that there could be issues with your electrical system, engine or other systems that are causing your car to not start, stall, or perform poorly, schedule an appointment with a professional mechanic to diagnose the problem and recommend next steps for repair.

Visit Your Local Minnesota AAMCO Auto Repair & Transmission Center

If you have any questions, feel free to call and talk with one of our courteous technicians. Or, book an appointment online to reserve your time, date, and location.



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