I have an Axpert 5Kva inverter hooked up to 4 x 100Ah batteries for backup during load shedding. We are currently being shed twice a day for 2,5hrs and the inverter has started cutting out. When rebooting, batteries show at close to 50% which, I understand, is when the inverter cuts out anyway to protect the batteries. My question is, do I need to add a second battery bank or are the existing batteries just not getting enough time to fully recharge? The system is about 16 months old. Please help, any advice will be greatly appreciated š.