Amazon.com: Kastar HHR-P511 / HHR-P402 Battery, Type 24 &Type 30 NI-MH Rechargeable Cordless Telephone Battery 3.6V 1800mAh, Replacement for Panasonic HHR-P511, HHR-P402, P-P511 (Detail Models in the Description) : Electronics
Amazon.com: Retevis RT49P Waterproof Walkie Talkies, IP67 Floating 2 Way Radio, 1200mAh Rechargeable AA Batteries, NOAA, SOS Flashlight Two Way Radio for Kayaking, Rafting, Hydro Flying(2 Pack) : Electronics