a car battery last for about 3-5 years
"Mag lights are very strong and can last for months. With regular daily use though because you are draining the batteries, you will probably have to replace the battery."
As long as the battery is kept charged then it should last 3-5 years.
a panasonic triple a battery last about 4 hours nonstop.
about a year.
8hrs
Forever.
a vented battery is vented and the regular battery is regular
No the battery is built in but should last a long time.
A Sanyo phone battery last just about as long as any other battery. Most batteries are manufactured by just a few different manufacturers, and then rebranded.
This is not necessarily true. Usually the brand of battery is not as important as the technology used. An alkaline battery should last longer than a regular carbon battery, no matter what the brand.
If you divide the 5000 mAh by the current used (in mA), you will get the number of hours the battery will last.
About eight hours