Features: The Ec5 to Ec3 wireless battery adapter, good quality and compact Plug and play, without welding,easy to use Connection is very solid and secure, light weight and small size with performance Product description: Male connector: Ec5 style Female connector: Ec3 style Quantity: 2pcs Used for: convert battery with Ec5 to Ec3 on esc/charger Package includes: 2 pack of Ec5 male plug to Ec3 female plug adapters. Please choose the correct adapter plug type, wrong choice will not match your device properly. If you have any questions, please contact us.