I just replaced the original battery in my UPS APC ES700 BackUPS, 3 times cheaper than battery sold by APC ... The size is perfect, only the terminals are not identical but still adaptable and effortless connection is sufficient. Remains to be seen how long they will last and autonomy in the event of failure. Apparently, according to my estimate of UPS, 1400 seconds instead of 2700 with the original APC battery. Next episode.