You have devices that need a rechargeable battery, which is the lithium battery that is used for most solar energy cameras. Forcell provides you with a rechargeable 18650 lithium battery with a capacity of 1800 mA and an electrical voltage of 3.7 volts. It is used in a thermometer, flashlights, solar cameras as it is Compatible with some electronic devices. (DLC-18650 3.7V Rechargeable Li-ion 1800mA Battery) Available in other models ()