One of my friends had a problem with his HP Slate 7
My HP slate 7 will not charge nor will it turn on, I have tried a different charger and different outlet plug. I tried different cables and different PC ports. Looks like the battery is not working anymore.
And true he is. The battery was discharged way bellow the operational limit. The HP Slate 7 has a Li-Polymer Battery: 3.7V, 3500mAh. Usually this type of batteries are charged up to 4.2V (Charging cut-off voltage) and work down to 2.75V (discharge cut-off voltage). Read More