I did look mine up.. These backup units were over $1 GRAND when new.. but their date of manufacture was over 10 years ago.. kind of stunk to break them down.. but I concur with everyone here that the 5 year lifespan is a safe bet to pull these.. on the + side I got 244 lbs of lead batteries to recycle. Even at the dismal .25/lb they are bringing right now.. it is still $61 bones.. and that doesn't take into account the steel case and the massive amount of wiring I gleaned from the inside of it as well.
Not bad for less than $1 each I paid for them
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