Efest Batteries are one of the most popular rechargeable batteries for vapers worldwide. With their IMR chemistry, Efest has created a remarkable piece of engineering – a safer, more efficient battery that is perfect for powering all your vape needs. Unlike ICRs, which use an internal protective circuit to manage charge and discharge cycles, Efest Batteries can operate without any such built-in feature, making them extra special. A reliable performance backed by Efest's exceptional customer service makes this battery stand out from the rest while also offering you peace of mind when choosing your electronic power source.