Retevis Two Way Radio Battery 1000mAh Original Replacement Battery for Retevis H-777 Compatible Baofeng BF-888S Arcshell AR-5 Walkie Talkie (5 Pack) Rechargeable original replacement battery; Suitable for Baofeng BF-888S BF-777S BF-666S; Retevis H-777 Walkie Talkies; Fit perfectly on walkie talkie without drops 5 pack Li-ion battery with portable power voltage 3.7V and capacity 1000mAh; allows day usage without issue Great back up during some outdoor or indoor activities; keeping your 2 way radios with power Safe to use with multi protections; making your every communication more efficient Simple and Convenient return process; 60 days warranty provide by us and 30 days no reason to return