I have two cars and two very different commutes and the difference in battery life is honestly shocking. My daily driver is a 2019 sedan that I use to drive from Dubai to Abu Dhabi and back three times a week. Most of that drive is on open highway at steady speeds. That battery is now eighteen months old and still starts perfectly every morning. My second car is an older SUV that I use for driving around Dubai during the day, mostly in areas like Deira, Bur Dubai, and sometimes Jebel Ali. That car is constantly in stop and go traffic. Short trips, long traffic lights, crawling through crowded streets. That battery barely makes it to twelve months before it starts struggling. Same owner, same maintenance habits, completely different battery life. I started looking into why and I found a really helpful explanation about
how traffic affects battery health. Basically when you're driving at steady highway speeds, the alternator spins fast and produces plenty of power to charge the battery while also running all the electronics. But in heavy traffic, the engine spends a lot of time at idle where the alternator isn't spinning fast enough to produce full charging power. Meanwhile the AC is still running, the radio is on, maybe you're using the hazard lights if traffic is really bad. The battery ends up discharging slowly during all those idle periods. Do that every day and the battery never gets a proper full charge. I'm not a mechanic so I can't verify all the technical details but the real world results are clear. My highway car has a much happier battery than my city car. Has anyone else here noticed the same pattern with their cars? I'm thinking about changing my driving routes even if it adds a few kilometers just to keep the car moving at steady speeds. Would love to hear if anyone has tried that and seen improvement.
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