Charged battery worked fine then all of the sudden the power cuts out and my gauge needs are shaking while car is off.

Hello, sounds like the battery -- as the root provider of system voltage -- has failed in its amount of charge available to sustain necessary electrical system operation. Hands on testing is needed to test the battery first, then the related charging system to see if there is a problem recharging a good battery (if that's the case) first. Use this link to find some shops near you that can help with your concern: www.repairpal.com/repair-shops