Lithium Ion batteries are fare away the best solution for power storage. It combine high voltage, high currency and high energy density in same taime. This makes the battery concept widly used. The main featers are:
- High energy density
- High voltage with everage operating voltages at 3.6 to 3.7 volt
- Discharge curves are flat
- Long cycle life
- Self-discharge is about 10W, approx 2%/month at room temp.
- No memory effect like Ni-Cd have
But there are some disadvantage. Most important one is the high energy density. Special precautionary measures in case of temperature and limitation of the current flow.
In the artikels I describe the precautions more exact and the eletronic you need for safety use of the battery