Car battery was dead but now working? Advice please?
First, the embarrassing part.
During my lunch hour, I (nearly) drained my battery using my iphone. Stupid, yes. The car started fine so I didn't think anything of it at that time.
After work, I pulled over and basically did the exact same thing also for an hour. I know. I know, I know, I know. BEYOND Stupid.
When I went to start it, shock, it wouldn't work. It made that clicking sound, lights flickered, but no go.
I waited about five minutes when, miracle, it suddenly worked.
I drove it around. Everything seemed perfectly fine.
My question is… Clearly I don't know much about batteries. My battery is a year old. Have I ruined it? Do I need to get it replaced tomorrow or was this hopefully just a learning experience for me and the battery *should* be fine?
Any thoughts, advice, would be huge.
I just had the same problem with a battery that was a 11 months old, as soon as it got cold it wouldn't start. I took the car back to the parts store and after taking it out and giving it the best test it showed the battery wouldn't do well in the cold. They finally gave me a new battery.
If your iPhone killed your car battery--it was already 90% dead. An iPhone draws about 1 amp at 5 volts. That's 5 watts. A typical car battery would have around 100 minutes of reserve capacity. That's the number of minutes a battery can deliver 25 amps at 12 volts. That's 300 watts. 300 divided by 5 = 60.So a typical car battery should run your iphone for 600 minutes. 600 mins divided by 60 mins/hr = 10 hrs.
10 hours is one heckofa long lunch.
Buy a new battery.
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