Airsoft Battery Pack EBHP-4 aren't cheaply made like most in the Airsoft market. They are specially made for the serious Airsoft player in mind. These batteries will provide the best power output for the longest amount of time. Take good care of these batteries and they'll take good care of you when out in the field. This battery is made with high quality parts and are guaranteed to meet or exceed the original equipment manufacturers specifications at a reduced price.