Ampere-hour is a unit of electric charge. One ampere-hour is the electric charge that flow in electrical circuit, when a current of 1 ampere is applied for 1 hour. 1Ah = 1A 1hour. One ampere-hour is equal to 3600 coulombs.
1 If your propane tank has been requalified, the requalification date will be printed on an oval sticker and affixed to the collar of the tank. 2  If the date on the sticker does not have a letter to the right of it, your propane tank needs to be requalified within 12 years of the date on the sticker.nstructions. Locate the collar of your propane tank. The collar is the raised piece of metal at the top of the tank, surrounding the valve. On the bottom half of the collar, look for the letters MFG DATE.. This indicates the manufacturing date.
This Fan Blade was built in January 1973. Decoding Ford Carburetor date codes. Autolite carburetor use a 3 or 4 digit date code system. Starts with the year on left, a letter in the middle for the month and a 1 or 2 digit number on the right depicting the day of manufacture.this tag is typical of an Autolite 4300 carburetor, C8ZF-A with date code 8B13.ngine components with date code castings 3 or 4 digit date codes. Ford 3 or 4 digit date codes on engine castings are very much similar in their composition and by far the most common types.