The Dynpower NI-MH battery is made of high-quality material and equipped with special technology. It can be recharged and discharged for one thousand and five hundred times. It can be stored for two years after full charge. The service temperature is - 20 ℃ to 60 ℃. It is perfectly suitable for solar lawn lamps, landscape lamps and garden lamps. In addition, it is possible to replace 1.2V NIMH / NiCD and 1.5V Alkaline batteries to power your portable audio players, game controllers,home devices, digital cameras electric shaver and other equipmentMain featuresThe cathode material of the Dynpower battery is fully coated with cobalts, which makes it more difficult to erode the surface of the cathode material. It prevents the occurrence of side reactions so as to reduce the battery self discharge rate greatly. The high charge retention rate of the battery can be still maintained after three years of storage.The battery is made of the special formula of AB5 alloy powders and brand-new additives, which improves the sturdiness and durability of hydrogen storage alloy lattice, resulting in the service life of up to 1500 cycles.Specification Capacity: 1000mahVoltage: 1.2VSize: Diameter 0.57inch(14.5mm), Height 1.98inch(50.5mm) (AA)Chemical system: NI-MH Operation temperature: -4℉-140℉Package included：8 x AA NIMH Rechargeable BatteriesNotes1. Please clean the solar charging panel of lawn lamps in time if the battery's life is shortened.2. Please charge the battery with the NI-MH Battery charger for the first time or when the sun is not enough3. Please place the lawn lamp in a place without shadow but with sufficient sunshine in order to ensure that the battery can be charged normally.4. Please take out the battery charging device if it is not used for a long time.