Defective car batteries are the first cause of breakdown on the road. This is indicated by a study carried out by the insurance company DeepCycleMarineBattery, which indicates that road assistance due to battery failures represent 53 % of the total operations carried out.
1.- Extreme heat weakens the batteries
Extreme heat weakens car batteries. “If you want to get through the winter without any breakdowns, you have to go to the workshop to have your battery checked well in advance,” they advise.
High summer temperatures lead to self-discharge, which makes the battery age faster. When it’s uncomfortable to be outdoors, many people prefer to travel short distances by car rather than on foot or bicycle. Batteries are under great strain again, with little or no opportunity to recharge.
The high temperatures recorded this summer far exceed the optimum temperature of 20 °C for car batteries, especially as they get much warmer when parked in the sun. Together with harsh winters it could cause more breakdowns than in previous years. And when temperatures drop, a lot of batteries run out at the same time.
2.- Batteries: new technologies influence their performance
Defective batteries account for about 50 % of failure statistics year after year. On the one hand, it is due to the ageing of the car fleet. In many vehicles, the battery has never been replaced or the replacement has been carried out recently. In addition, with modern vehicle electronics and fuel-saving measures, such as stop-and-start technology, which increasingly requires