I have used a lot of these over the years: https://www.ebay.com/itm/Exeltech-Mx-Series-N-1-Redundant-Expandable-Inverter-System-NSN-6130015361815/273164348175?hash=item3f99dd2b0f
From: Gino A. Villarini Sent: Tuesday, May 08, 2018 1:58 PM To: af@afmug.com Subject: [AFMUG] 48 vdc Inverteres for Data Room 6kw ? Looking for 48 vdc inverters for data room applications in the range of 6-8 kw Can be a all in one system ( charger plus Inverter) , must be always online Gino A. Villarini President Metro Office Park #18 Suite 304 Guaynabo, Puerto Rico 00968