Hell fire I know we are helpful but if the op does not know what or where the battery is or located ....does that not ring big alarm bells , im really not trying to be funny , but if this was even but a apprentice engineer the answer would be known , im just really worried that a customer that is 2000km away is going to end up with a fried kit.
OP do you know how to back up the config , reload etc ....this is not an attempt to pull you to bits in a public forum , but i am really really concerned that if you are asking that question ...well why , hence my suggestion of the ups as i guessed you know the admin but not the hardware , im just trying to keep our industry alive by not giving out advice to untrained engineers as it could well end badly for you ,the customer and ultimately us as the engineering community , who have to go on paid courses to learn this stuff, i hope this does not offend anyone but i think is pertinent.
APSS (SME)
ACSS (SME)
ACIS (UC)