About this item 3.7V 500mAh rechargeable Lithium battery: voltage3.7V,capacity:500mAh,batterySizeL68*12*25mm/2.68*0.47*0.98inch,,weight:18g/0.66oz,Lightweight and portable battery pack suitable for RC Quadcopter Drone E58 S168 JY019 L800 3.7V Lithium rechargeable battery with USB charging cable: Everywhere You will Charge It- You can charge the battery on power bank, vehicl power, computer,charger cable are great for MOST of the 3.7v batteries but not all. Check the printed limits on the chargers of different toys so the numbers match the charger that came with the toy Replacement battery for 3.7V 500mAh: When your original battery is damaged or old, it can be a good replacement. You can also use it as a spare battery, when you play the toys, which allows you to enjoy longer action time(Please make sure your device battery is the same size and connector as the picture shows before you buy it) Lithium Battery No memory effect: Our nickel metal hydride battery pack has no memory effect which helps retain its max energy capacity every time,Easy to operate,Recharge anytime without needing to discharge and drain the battery Warranty and Guarantee: All of our products have been rigorously tested before leaving the factory,We provide 100% satisfied customer service, if you have any question about our products, just feel free to contact us, we will provide replacement or refund within 24H