PC Doctor

Problem : you replaced battery pack in your APC UPS with brand new batteries, but they are not detected by UPS unit. Failed battery LED is on, you hear alarm beeps and PowerChute console show no battery alarm. Solution : The UPS batteries have self-discharge rate around 3% of capacity per month at 20oC (average). If you or your supplier has stored batteries for a long time, batteries may come totally discharged and UPS will not detect them. What you'll need to do in this case is to disconnect battery pack from UPS, open the battery pack cover and install one new battery into the old battery pack, connect it to UPS, let it charge for a while, then add second new battery and so on, until you fully charge all 8 batteries in the battery pack.

Symptoms: Blackberry Curve 8300 or 8330 shows the white screen and battery symbol with red line across (see screenshot below). The phone will not boot up neither with new battery inside nor connected to a wall charger. BlackBerry Desktop Software can't connect to the phone either. Solution : remove the battery, gently remove the front plate, separate the back and center pieces and clean the contact pins marked on the picture below.