I recently had an UPS failure. My UPS and APC 650 ES, has a battery they call for is the RBC17. Which on Amazon.Com is $39.99. However when you peal the sticket off you get Vision UB1290. This battery (which is the same battery) cost around $15.00.
I imaging this happens a lot with companies looking to make a cheap buck. Hopefully this post catches someone search on “Alternative APC Battery” or something similar.