... PSW (500VA-6250VA)Ultra-fast transfer timeFrom AC to DC less than 5msFrom DC to AC 0ms(Routers, Switches PC, Servers and ATM ... recharge time(Big charge current 30A~50A)Automatic tracking mains or generator input(Tracking input voltage, phase & frequency)AC / ... load protection, short circuit protection with " ! " light onBATTERY CAPACITYFrom left to right 4 indicator means 100%, 75%, 50%, 25% (" ! " ...