You can place a voltmeter across the new battery without the engine running, and check the voltage. It should be around 12-13 volts. Check it again with the engine running, it should increase to the 14-15 volt range. This will verify that your engine's charging system is operating properly.
Just about all modern small engines operate with a magneto type ignition system, using the battery for just starting the engine. This makes troubeshooting battery problems a little difficult. -Fordlords-
Just about all modern small engines operate with a magneto type ignition system, using the battery for just starting the engine. This makes troubeshooting battery problems a little difficult. -Fordlords-