Charging Point Polarity for Sumvision Cyclone 10.1 in Android Tablet

[bluelead]

I have lost the mains charger for my Sumvision Cyclone 10.1" android tablet, and it will not charge via USB

I have a universal regulated AC/DC adapter which can give the required 5VDC at 1 amp. But I need to know what polarity to set on the adapter. There is no symbol on the charger input port on the tablet. Anyone know the answer out there?

Bluelead

 

[hag6]

I have a cyclone voyager 2. The symbol on the 0.5A charger is: - c +

Hope this helps

 

[yefimo]

I have the tablet. It's centre positive.

I should also add that the DC tip is 2.5mm o.d. / 0.8mm i.d. You can find cables on ebay etc that go from this to usb, so you can use a standard charger.