Power Pack Jump Starter
I know very little about these things so I come here asking: "Will this thing really start a car?". My wife wants to give one to her son for as a backup for his 2008 Harley Streetglide. He has been wi...
Forum Discussion
Hi,
77f or 25 c is the testing temperature. Hotter than that and charge voltage needs to be reduced. Colder it needs to be increased. In fact at -40 voltage should be about 17 for charging.
Lifespan is reduced at higher temperatures because the speed of the reaction is approximately double for each 10 degrees C (18 f) of the rise. The acid rips into the plates twice as fast. So, yes, inside a car may reduce the lifespan.
Rule of thumb, batteries last longer in the cold, so long as they are kept charged, preventing freezing.
77f or 25 c is the testing temperature. Hotter than that and charge voltage needs to be reduced. Colder it needs to be increased. In fact at -40 voltage should be about 17 for charging.
Lifespan is reduced at higher temperatures because the speed of the reaction is approximately double for each 10 degrees C (18 f) of the rise. The acid rips into the plates twice as fast. So, yes, inside a car may reduce the lifespan.
Rule of thumb, batteries last longer in the cold, so long as they are kept charged, preventing freezing.
fj12ryder wrote:
So there is kind of a "sweet spot" temperature wise with these things? I've known that cold weather is hard on batteries, but never really considered hotter weather being an issue. How hot would be too hot? In a closed car during the summer reduce it's life expectancy?
