1. Super capacity, showing the capacity of the high waste capacity electrical appliances fully. 2. High voltage(1.5V), prolong the life of the electrical machines, 3. No memory effect, charge at any time and can be cycle used, 4. Self-discharge rate low ,only 1% of the Ni-Mh,Ni-cd battery ,the warranty is about 3 to 4 years. 5. buy and use immediately, there is no need to charge in advance, 6. work with the Topcel charger correctly, and can charge and discharge for more 20 times repeatly,