3 ms·
Batteries like Chrome-Vanadium Flow Batteries can already be recharged just by filling a tank (http://en.wikipedia.org/wiki/Flow_battery http://en.wikipedia.org
by caf 15y ago
Batteries like Chrome-Vanadium Flow Batteries can already be recharged just by filling a tank (http://en.wikipedia.org/wiki/Flow_battery http://en.wikipedia.org/wiki/Flow_battery).
The energy density is still a killer, though.