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🔋 Electrical — Battery, Alternator, Starter
Battery starts, alternator powers while driving, starter cranks engine. One weak link = no-start.
⏳ Battery
3–5 years
💰 Battery
$120–$250 / Alternator $400–$800
🛠️ DIY
Battery: Beginner
⚠️ Fails like
Click, slow crank, dim lights
Quick diagnosis
Rapid clicks = dead battery
One loud click = starter
Battery light while driving = alternator
Parasitic drain? Trunk light, dashcam
Make it last
Clean corrosion with baking soda
Short trips kill batteries — drive 20min+
Test free at auto stores each fall
Keep terminals tight
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