Do you want the economical and greener lifestyles? Maybe you should start from minor matter， and just like use the rechargeable batteries. Rechargeable batteries adopt universal standards， most of them suitable for cameras， toys and many other electronic devices. Except that， it features extensively long working life and high efficiency， great for use. And it is compact and rechargeable， so you can carry it anywhere anytime， convenient to use.                                    Features                New battery<br>    High quality and durable<br>    Provides excellent continuous power sources to your device<br>    High energy density， long life battery<br>    This battery has an extra long life for all your battery powered devices<br>                                                            Specifications            Battery Type    Ni - MH rechargeable battery    <br>Model    350AA    <br>Voltage    1.2v    <br>Capacity    3500mAh    <br>Charge Time    About 16hours    <br>Weight    2.29oz / 65g    <br>Dimensions    4.8 x 1.4cm / 1.89" x 0.55" (H x D)    <br>                                                            Package Includes            4 x UltraFire AA 1.2V 3500mAh Ni - MH rechargeable Batteries                                                            Extra Info            1. In case of danger， do not make it short-circuit distance or place it under high temperature<br>2. Avoid using Ni-MH batteries with ordinary dry-cell batteries<br>3. Do not use Ni-MH，Ni-Cd with different capacities and models<br>4. If you don&acute;t use the battery for a long time， please put it in a dry and cool place and make it full charged once every three months<br>5. For a new battery， it is better to full charge it before using<br>