From: http://www.batterysharks.com/

From: http://www.gobti.com/

Very Expensive for UPS RBC2

From: http://www.gruberpower.com/12-volt-7-amp-hour-ah-battery

Great Specs and Crossrefernece tables

From: https://www.upsforless.com/cart.aspx

	
APC SmartUPS 750VA Tower UPS with LCD Display, Refurbished (SMT750)
For: 160.00 with Shipping