Good afternoon, could you assist as we have had a Solar System installed at our home with 2 x 10kwh batteries ( the same as what you have). Both are connected to Hybrid Inverters but the 1 battery now suddenly indicates it is not charging as the LED light is not indicated and the 4 charge lights indicators is only showing light on the 1. We were search for a manual on these batteries but all we could find is the 48NPFC where ours is showing on the sticker 45NPFC200 as yours?