Nextsource Materials Inc (NSRCF)

[stooge4]

http://en.wikipedia.org/wiki/Lithium-titanate_battery

"This makes fast recharging possible and provides high currents when needed. The disadvantage is that lithium-titanate batteries have a lower voltage and capacity than conventional lithium-ion battery technologies."

http://en.wikipedia.org/wiki/Vanadium_redox_battery

"The main advantages of the vanadium redox battery are that it can offer almost unlimited capacity simply by using larger and larger storage tanks, it can be left completely discharged for long periods with no ill effects, it can be recharged simply by replacing the electrolyte if no power source is available to charge it, and if the electrolytes are accidentally mixed the battery suffers no permanent damage.

The main disadvantages with vanadium redox technology are a relatively poor energy-to-volume ratio, and the system complexity in comparison with standard storage batteries."