Duraace98, IMO your best bet for unstable voltage correction at moderate cost is proabably a Furman voltage regulator like the AR-1215. Its features include instantaneous shutdown when there is any extreme undervoltage/overvoltage situation. PS, are you a cycling enthusiast ? "Duraace" brings to mind Shimano Dura-Ace bicycle components.
http://www.furmansound.com/product.php?div=01&id=AR-1215
http://www.furmansound.com/product.php?div=01&id=AR-1215