... comprehensive testing including high altitude performance, vibration, mechanical shock, thermal cycling, external short circuit and overcharge test simulations. 6. ... mutual benefit and win- win commercial spirit, reliable quality.Our Main Product :Battery Pack for Walkie Talkie.PMNN4071AC ... , PT4200, PT558KB-33L fits Kirisun PT3300, PT3800, PT3500 High quality Li-ion Battery For ICOM BP-265, IC-F3001, ...