Instruct: Classify Amazon reviews into positive or negative sentiment
Query: DOES NOT FIT ALL MODELS LISTED

This item does not fit the 'xs-1500'.It fits the xs series only up to 'xs-1000', and certain other series' up to 1500. To top it off, Amazon does not allow returns on hazardous items.You can fit it to the xs-1000 by:1 cutting the tape/seal both sides, above & below adapter plate.2 dis-assembling from wiring harness.3 place batteries side-by-side, orient to match old batteries.4 use jumper from old batteries to connect in series (+of one battery to -of other).5 connect black cable to '-'6 slide into the UPS, connecting red cable to '+' terminal when it reaches.