Here's a nice graphical rendition of what can happen. The undervoltage situations are not driven by current travelling outside the cell, they can happen even i

Here's a nice graphical rendition of what can happen. The undervoltage situations are not driven by current travelling outside the cell, they can happen even if the cell voltage drops by self-discharge. http://www.mpoweruk.com/lithium_failures.htm http://www.mpoweruk.com/lithium_failures.htm