Quote:
Originally Posted by patrickt
That would seem to make sense, and ol' Blas is usally right, but this quote: "Full-charge voltage on a 12-volt battery is 0.9 volts higher at 32°F than at 70°F" seems to be prevalent on several battery related sites. Is it completely wrong, or is there some subtle point we're missing? BTW, I pulled it originally from here: https://azsolarutility.com/Battery_Information.html |
Quoted from that site "Full-charge voltage on a 12-volt battery is 0.9 volts higher at 32°F than at 70°F. While discharging, a highertemperature will increase battery voltage.
There is little temperature effect while a battery is standing."
Their wording is rather bad, or we've discovered a mis-information conspiracy.
I've got 30yrs as an electronic technician, an even more as a sometimes unwilling mechanic. Never saw a battery (any kind) increase voltage with decreased temps.
Lithium batteries were the only ones I've heard of that can maintain voltage at sub-zero temps. Because of their finiky charging and resultant fires they were deemed to unsafe for public use (in the '40s or '50s). Even the lithium ion batteries can light off. (google sony laptop fire)