My Amazing 12-year old battery...
It's an original Toyota battery when I bought my new truck. Zero maintenance and I thought it's dead, which is long overdue for replacement anyway, when it did not crank nor rev the engine. Chec...
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Found a cheap cigarette light jack adapter for USB where the middle has volt-meter. I find it relatively accurate. It reads 14.3V when the engine/alternator is running and 12.3V with engine off.
Dang, those cheap Chinese products can be useful too -- sometimes.
Dang, those cheap Chinese products can be useful too -- sometimes.
