Features: The high-energy-density intelligent IC control chip and the step-up- step-down transformer built in Lishu 1.5V smart lithium-ion battery (constant-voltage and rechargeable) decide its characteristics of stable discharge, fast charging and strong power. The battery is rechargeable for up to 1000 times. 1 battery equals 1000 disposable batteries. It is durable, economical, low-carbon and environmentally friendly with low self-discharge and without memory effect. The battery also has strong high and low temperature adaptability. There is no heavy metal elements or harmful substances during production or use, thus no pollution or seldom secondary pollution in recycling.