Car battery problems are among the most common issues for drivers, especially in challenging climates like Alaska. Whether your car won’t start on a cold morning, your dashboard lights flicker, or your hybrid’s battery isn’t holding a charge, understanding how car batteries work and how to care for them is essential.
Do you want to take the right steps to extend battery life and help reduce the likelihood of that dreaded, unexpected metallic clicking? Then read on. You’re in the right place to learn about causes and the prevention of car battery problems.
How Does a Car Battery Work?
In a traditional combustion engine, a car battery’s primary job is to provide the electrical energy needed to start the engine. When you turn the key or press the start button, the battery sends a surge of power to the starter motor, which cranks the engine. Once the engine is running, the alternator takes over, generating electricity to power the vehicle’s systems and recharge the battery for the next start.
Traditional car batteries store energy in the form of chemical potential. Inside, lead plates are submerged in an electrolyte solution. When you start your car, a chemical reaction releases electrons, generating electricity. As you drive, the alternator replenishes the battery’s charge. If the alternator or voltage regulator fails, the battery can overcharge or undercharge, leading to various car battery problems.
Most Common Indicators of Car Battery Problems
Car battery problems can manifest in several ways:
- Difficulty starting or failure to start the engine
- Dim headlights or electrical issues
- Frequent jump-starts needed
- Corrosion on battery terminals
- Battery warning light on dashboard
These problems can stem from age, lack of maintenance, extreme temperatures, or electrical system issues. Identifying the root cause is key to finding the right solution for your car battery problems.
How to Take Care of a Traditional Car Battery
Proper care can significantly extend the life of your car battery and reduce the risk of unexpected failures. Here are some essential maintenance tips:
1. Test Your Battery Regularly
Use a battery tester to check the battery’s health. Detecting a weak battery early is one of the most effective ways to help prevent car battery problems that can leave you stranded.
2. Keep Connections Clean
Corrosion on battery terminals is an often overlooked cause of car battery problems. For a DIY cleaning, use a toothbrush to clean the terminals with a mixture of baking soda and water. ALWAYS wear safety gear. Or, you could take your car to a mechanic to get it cleaned during routine maintenance.
3. Ensure a Tight Fit
A loosely mounted car battery can vibrate excessively, causing internal damage and shortening its lifespan. Regularly inspect the battery to ensure it is securely fastened in its tray.
4. Prevent Electrical Discharge
Leaving headlights, interior lights, or accessories on when the engine is off can drain the battery. Always double-check that everything is powered off before exiting your vehicle.
5. Take Longer Drives
Short trips don’t give the alternator enough time to recharge the battery fully. Longer drives help keep the battery charged and healthy, reducing the risk of car battery problems.
6. Use a Battery Maintainer
If your car will be parked for an extended period, use a battery maintainer. This device keeps the battery at an optimal charge level without overcharging, preventing car battery problems related to inactivity.
How to Take Care of a Hybrid Car Battery
Hybrid vehicles use high-voltage battery packs that require special attention. While hybrid batteries are designed to last 10-15 years or 100,000-150,000 miles, improper care can lead to premature car battery problems. Here are some tips to help you keep your hybrid’s battery charged and ready for the road:
1. Minimize Exposure to Extreme Temperatures
Both heat and cold can impact battery life—heat wears down the battery, and cold reduces its range. In the summer, park in garages or covered areas. In the winter, take the time for proper arctic car care.
2. Avoid Charging to 100% (for Plug-in Hybrids)
Repeatedly charging to full capacity can reduce battery longevity. Many hybrids have systems to cap charging at 80%.
3. Drive Regularly
Hybrid batteries self-discharge over time. Regular driving ensures the battery is charged and maintained. Aim for at least 625 miles per month.
4. Keep the Battery Area Clean
Dirt, debris, and moisture can clog cooling systems and cause overheating or corrosion. Clean the battery compartment regularly and check for signs of rodent damage.
5. Limit Fast Charging
Frequent use of DC fast chargers can reduce battery lifespan. Use standard charging methods when possible.
6. Get Routine Maintenance
Clean or replace the battery cooling fan filter as recommended by your vehicle’s manufacturer. Bringing your car in for inspections and maintenance from a trusted mechanic is one of the most effective ways to avoid car battery problems.
The Impact of the Alaskan Climate on Car Batteries
Winter (especially in Alaska, where it can stay below freezing for months) is notorious for causing car battery problems. Subzero temperatures slow the chemical reactions inside the battery, reducing its ability to deliver power and making it harder to start the engine.
And it’s not just the fluids inside the battery that get sluggish. As temperatures drop, materials inside the battery condense, raising internal resistance and making it harder for electricity to flow. This can result in higher voltage drops and less power when starting.
Additionally, cold temperatures cause the engine oil to thicken, making it harder for the engine to turn over and requiring more power from the battery. At the same time, heaters, defrosters, and lights increase the electrical load, draining the battery faster.
As you drive in the cold, frequent deep discharges and recharges accelerate battery aging. Even new batteries can struggle in extreme cold, while older ones are more likely to fail.
Battery Tips for Alaskan Drivers
Here are a few tips to help you minimize car battery problems during the Alaskan winter:
- Test Your Battery Before Winter: Have the health and charge level of your battery checked before the coldest months arrive. We recommend getting a pre- and mid-winter inspection.
- Park Indoors When Possible: Garages help keep batteries warmer by minimizing exposure to the elements. However, be mindful of slush that melts off your vehicle in a warmer environment, as it can increase the risk of rust damage. Regular inspections are key to catching any potential issues.
- Use Engine Block Heaters: Winter engine heaters reduce the strain on your battery by making it easier for your engine to start.
- Limit Accessory Use: Turn off heaters, defrosters, and lights when they’re not needed to conserve battery power.
- Replace Old Batteries Proactively: Don’t wait for a breakdown. Replace batteries that are more than four years old before winter hits.
Stay Charged for More Alaskan Adventures
Car battery problems can leave you stranded and frustrated. By practicing good maintenance year-round, you can avoid many common issues. Regular testing, proper cleaning, and mindful driving habits are your best defense against problems with your car battery.
Need an inspection or battery replacement? Metro’s mechanics live and work in Alaska, so we know how to give your car battery the care it needs in every season.
