Looking for an MGE Eaton EX EXB RT 3U Extended battery? Then you've come to the right place. We have been selling batteries for MGE Eaton EX EXB RT 3U Extended UPSs online since 2003 and will have the correct battery for your UPS in stock, available for next day delivery. Use our MGE Eaton EX EXB RT 3U Extended battery guide below to find a suggested battery for your UPS and compare it to the battery fitted to your Eaton EX EXB RT 3U Extended. Need help? Simply contact us.