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Ways to extend the life of a car battery

An average battery usually lasts between 3 and 5 years. Battery quality matters, but there are also a number of other factors that affect the lifespan of a car battery. Check, among other things, how maintaining the vehicle's electrical system and correctly using a charger matter.

Battery under good care

A healthy battery means peace of mind for the driver, safer driving, and lower costs for servicing or professional diagnostics. That is why car owners, if their budget allows, try to choose high-quality batteries from a trusted manufacturer. The answer to the question, what is the lifespan of a car battery, is not straightforward. There are batteries that cause problems and stop serving properly already after 2 years from purchase. Others work trouble-free for 5 years or longer. What does it depend on? Why are there such differences in the average lifespan of a car battery? It turns out that many vehicle owners unknowingly make simple mistakes. Meanwhile, following a few rules is enough to extend battery life and not have to frequently use a car charger.

How to extend battery life – the importance of first contact!

To preserve the longest possible lifespan of gel, lithium-ion or lead-acid batteries, start by preparing them properly for use before they are installed in the car. You will extend the average lifespan of a car battery if you charge it fully before first use. You will need a good battery charger – maybe you have a charger in the garage that your grandfather used in the 90s to charge his Fiat 125p. Although the nostalgia may be strong, it’s better to set it aside in this case. Old-style chargers are not only less effective but in many cases also unsafe. If you really want to extend battery life without damaging anything, invest in modern equipment such as a 12V electronic charger. New batteries are usually charged to 80%. Use a charger to top the battery up to 100%. Fully charging it during the initial installation in the car extends battery lifespan.

Battery lifespan and avoiding deep discharges

Winter, frost, short trips or leaving the car unused for long periods cause the battery to self-discharge. Some factors cannot be avoided. It’s not about taking a long, pointless drive every time you need to go to a supermarket 3 km away. It’s about regularly topping up the battery in such circumstances. The voltage should read 12.7 V or higher. You can check it using devices such as a digital battery tester. A value below 12.5 V means the battery is starting to discharge. Remove it from the car (observing safety rules!) and charge it with a charger. This will extend the battery life in diesel vehicles and in every other engine type.

Regularly check connections

Every driver wishes for perfectly smooth roads. Unfortunately, our roads are far from ideal, and vibrations, e.g. while driving over potholes, can loosen connections – cables, bolts, etc. Check the tightness of connections from time to time. This will help you avoid, among other things, sparking during start-up or disconnected cables. More broadly, battery life is extended simply by taking care of the vehicle’s technical condition. Check its operation yourself or see a mechanic as soon as you notice any worrying symptoms. Professional, regular diagnostics and possible repairs are the basis for the proper functioning of all systems in the car, including battery lifespan.

Battery lifespan and fixing a broken radio

The battery supplies power not only to the vehicle but also to all electrical consumers inside it. If you want to extend the life of a lithium-ion battery or any other, avoid leaving the engine off with lights on, the radio playing, interior lights on, etc. In such circumstances the battery predictably discharges. Unfortunately, even a planned long trip won’t help, because intensive charging after a deep discharge is harmful to the battery. Also pay attention to whether devices in the car work correctly. A radio that draws power even when off, or a trunk light that never goes out – these are small but real faults that require a visit to an electronics specialist.

Checking electrolyte level

The lifespan of a maintenance-free battery is easier to preserve today than with other types. However, if you have a battery with so-called filler caps, regularly check the electrolyte level. If it is low, top it up with distilled water. Neglecting this can lower the electrolyte level to the point of exposing the plates, which can lead to permanent damage to the battery.

Battery lifespan may surprise you!

If, in addition to the tips above, you remember to keep the battery clean, regularly check at-rest current draw, or simply disconnect it when the car is unused for a long time, you will certainly extend battery life. Carrying jumper cables in the trunk will of course be useful, but mainly to help a friend in need, not to repeatedly rescue your own discharged car on the roadside!
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