Q: What about the cooling coils in storage to keep them fresh longer? What about freezing?
R: Recently, the discussion will drift back to the old question of cooling batteries. Most chemical processes approximately twice the rate for every 10 degrees C increase in temperature. This includes the chemical processes of self-discharge of the battery and corrosion. So a battery heater is the shorter its life. coils during the life of the dell precision m90 battery increases, but often not worthwhile. A cold battery production was also low due to the current of the same process, so make sure you have enough time to warm up!
How cold is too cold? Now it is true that it is wrong to freeze the batteries because ice crystals can damage the structure of the battery (the separator, for example). But when a battery freeze? NiCad, NiMH and alkaline batteries used in 30-45% KOH aqueous solution. The freezing point of the present in the eutectic is 31% -60 ° C (-76 ° F). Freezer not go so low.
The lithium ion cells are more difficult to define, but most of their electrolytes go to -40 ° C (also -40 ° F). Lead acid batteries will depend on the state of charge, a fully charged battery, frozen at -70 ° C to -30 ° C. A completely discharged battery lead acid battery freezes at 0 ° C. So unless a discharge of lead acid batteries, no, do not worry about storing batteries in the freezer.
