① It has a high ratio of weight to energy and volume to energy.

② The voltage of high-voltage single lithium battery is 3.6V, which is equal to the series voltage of 3 NiCd or NiMH rechargeable batteries.

③ Self-discharge is small and can be stored for a long time, which is a great advantage of the battery.

④ No memory effect. The lithium battery does not have the so-called memory effect of nickel-cadmium battery, so it is unnecessary to discharge the lithium battery before charging.

⑤ Long service life. Under normal working conditions, the number of charging/discharging cycles of lithium battery is far greater than 500.

⑥ Lithium battery charger manufacturers believe that lithium batteries can be charged quickly. Lithium batteries can usually be charged at a current of 0.5 to 1 times the capacity, thus reducing the charging time to 1 to 2 hours.

⑦ It can be used in parallel at will.

⑧ The lithium battery charger manufacturer thinks that because the battery does not contain cadmium, lead, mercury and other heavy metal elements, it is non-polluting to the environment, and is a very advanced green battery in the contemporary era.

⑨ High cost. Lithium batteries are more expensive than other rechargeable batteries.