So that your drone can reach the same heights as it did at the beginning, it will be time for a new battery after a few charging cycles. This lithium polymer battery contains 3.7 V. This voltage is important when choosing the right charger, among other things. The unit milliampere hours (mAH) indicates the amount of charge that can flow through the device within one hour. With this rechargeable battery it is 650 mA. It is important that you do not dispose of your old Li-Polymer battery with normal household waste. Old rechargeable batteries should be placed in specially designed boxes. They are yellow and can be found in electrical or DIY stores. The disposal points provided by local waste disposal companies also offer professional disposal. This battery is specially made for the Quadcopter CA XL (503002).