Power comes from a rechargeable lithium ion battery and the Ambit screen has an adjustable back light and can be reversed either white text on a black background or black text on a white background. Additionally impressive is the 50 hour battery life with GPS enabled, allowing for two straigh...
When the lithium metal becomes detached, it can become trapped by the newly-formed SEI matrix, becoming a dendrite. When trapped, it no longer contributes to battery charge cycles. In this case, the dendritic lithium is considered "dead," and the cell's charge capacity will diminish; in oth...