Our nickel-metal hydride batteries have a cycle life of up to 1200 cycles and a high energy density, equivalent to 6,000 primary batteries. Pre-charged and ready to use, it retains up to 80% of its charge after 12 months thanks to its low self-discharge technology. Operating temperature range from -20 °C to +50 °C provides reliable performance even in extreme environments. With the built-in independent charging system, the charger can charge 1 AA or AAA NIMH battery in 40 minutes, or 4 identical batteries in less than 3 hours. Its USB compatibility and compact design facilitate high-performance charging for travel, home, and business use. Safety is our top priority and our chargers are equipped with six safety mechanisms to guard against possible risks.