What are the advantages of the Li-ion battery over other secondary batteries?

The Li-ion battery advantages as follows :
1) High Energy Density. Li-ion battery have higher energy density, which allows them to be made approximately half the weight of and about 20-50 percent smaller and lighter in volume than the existing Ni-Cd or Ni-MH batteries of the same capacity. GeePower batteries have high energy density, can be reach 110~140wh/Kg.
2) No Memory Effect. Li-ion battery have no memory effect, which occurs in Ni-Cd and Ni-MH batteries from repeated charging and discharging. The capacity of Li-ion batteries is not reduced by frequent charging up to a certain level.
3) Environmentally Friendly Battery. Ni-Cd and Ni-MH batteries contain heavy metals that are hazardous to human bodies. Specifically, Ni-Cd batteries include cadmium, and lead-acid batteries use lead as its main material. This leads to the risk of heavy metal contamination not only during the battery manufacturing process but also after it is discarded. In contrast, Li-ion batteries are relatively environmentally friendly since they contain no cadmium, lead, mercury, or other heavy metals.
4) High Voltage. Li-ion battery can generate about three times as much high voltage as Ni-Cd or Ni-MH batteries. This helps reduce the number of batteries used, and the manufacture of smaller and lighter electronic devices.
5) Fast Charging. Li-ion battery can also be charged much faster than lead-acid batteries. Typically, they charge approximately three times faster than lead-acid batteries. GeePower lithium-ion batteries fast charging can up to 3C, less than 20minutes.
6) Long Life Cycle. Nickel-based batteries or lead-acid batteries have shorter life cycle than Li-ion batteries because of frequent charging and discharging. This results in inconvenience and cost due to frequent battery replacement. However, Li-ion batteries are more advantageous in terms of the total cost since they can undergo at least 500 cycles of charging and discharging. GeePower battery can be above 2000 recharge Cycles.
7) High Storage Characteristics. Typically, battery capacity gradually decreases because of self-discharge during long periods of storage. Lead-acid batteries retain only 60 percent of the initial capacity after a year of storage. However, Li-ion batteries are excellent in terms of self-discharge over a long period, as they maintain about 93 percent of their initial capacity after a year.
8) Light weight and small volume. GeePower Li-ion battery is about 1/3 weight and volume of lead-acid batteries.