Starting issues

Sounds like your battery is toast. Did you measure the voltage at the posts (not the cable clamps)? Should be approximately 13 volts, if not disconnect the cables and attach your charger DIRECTLY to the battery posts. If the battery is severely discharged then you will likely not see the current meter on your charger move but after about a half hour you should notice the meter start to come up. As the battery charges the meter will work it's way back to zero. Clean the posts and cables, reconnect and try again. Good Luck.