At a temperature of 80° F, a flooded lead acid [FLA]
battery will self-discharge, at a rate of approximately 3 - 4% a week [±12%/month].
In cold weather, flooded batteries will take longer to discharge.
My question is:
What self-discharge compensation factor [% per 10°F below 80° F] should one apply, for temperatures below 80° F?
Can we extrapolate from the specific gravity temperature compensation adjustment?
A typical, fully charged, flooded
battery, will have an electrolyte density around 1.265 as measured on a hydrometer, at battery temperature of 80° F. To compensate for winter temperatures, subtract 0.004 for every ten degrees below 80° F [26.6º C].
Trojan is no help.
“Deep-Cycle Battery Storage” ~ Trojan Battery White Paper
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https://www.trojanbattery.com/pdf/WP...orage_0512.pdf