The Truman Doctrine arose from a speech delivered by President Truman before a joint session of Congress on March 12, 1947.
Positive First. When installing a mower battery, always connect the positive cable first. The positive cable is red. It attaches to the battery terminal post marked with a plus sign, the letter P or the word POS. Attach the negative cable last. The negative cable is black.
It is worth the effort to remove the battery from the lawn mower and connect it to a battery charger. The best type of battery charger to use is a multistage charger. The multistage battery charger will constantly monitor the amount of power that is being fed to the battery.