I bought a used 8830 world and I have been charging it for a couple of hours. It wont power on and all I get are 4 flashing red lights from the L E D and a pause can someone tell me what that is please!!!!!!!!!!!!!!

Looks like the battery is not charging. BB will boot up automatically once it has more that 10 % of juice in the battery.

Battery is probably n/g. Buy a new one. You can get one for 6 bucks at Amazon.

take off the battery then put it back a red led will lit and wait , it was a reset to your unit

There is something wrong with your battery