Apc Es700 Manual -

| Problem | Likely Cause | Solution | |---------|--------------|----------| | Unit won’t turn on | Battery disconnected or dead | Check battery connection; charge 16h | | Constant overload beep | Too many devices plugged in | Remove non-essential loads | | Short runtime on battery | Old battery or high load | Replace battery or reduce load | | No power to device | Outlet failed (surge-only outlets) | Move to battery-backed outlet | | USB not detected | Wrong cable or driver issue | Use A-to-B USB cable; reinstall software |

For safety during shipping, the internal battery is disconnected at the factory. The unit will not operate until this connection is made: apc es700 manual