Probably depends on the duty cycle. I bet the heat from charge/discharge does a lot to keep the electrolyte molten.
But if you drive infrequently...
Quote:
When not in use, zebra batteries typically require being left under charge, in order to be ready for use when needed. If shut down, a reheating process must be initiated that may require up to two days to restore the battery pack to the desired temperature, and full charge. This reheating time will however vary depending on the state-of-charge of the batteries at the time of their shut down, battery-pack temperature, and power available for reheating. After a full shut down of the battery pack, three to four days usually elapse before a fully-charged battery pack loses all of its significant heat.
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Also:
Quote:
" Vehicles powered by ZEBRA batteries have covered more than 2 million km. Modec Electric Van uses ZEBRA batteries for the 2007 model. The Th!nk_City also uses Zebra batteries.[1]"
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source:
Molten salt battery - Wikipedia, the free encyclopedia