ANSWER: The most common battery rating is the AMP-HOUR RATING. This is a unit of measurement for battery capacity, obtained by multiplying a current flow in amperes by the time in hours of discharge. (Example: A battery which delivers 5 amperes for 20 hours delivers 5 amperes times 20 hours, or 100 ampere-hours.)
2 â The Block. Round off an end of a block of wood to match the original shape of the inside of the bumper and place it against the dent. Tap it with the rubber mallet and check it every so often to see how the repair progresses.
How to Repair Your Scratched Plastic Bumper. Got a bumper scuff or scratch? While not as severe as a bumper crack or dent, a trip to an auto body repair shop can still cost an average of $560, and they will probably need to keep your car for a few days. Why not fix it yourself?