The layer of Battery De-Mister in each cell must be at least 1/3 to 1/2 inch deep in order to work properly. If you have an odd-sized battery, follow these instructions to determine how much Battery De-Mister you will need to add to each cell:

1. Make sure the electrolyte is up to the proper full level, or 1/8 inch below the bottom of the vent tube well. If the level is low, add distilled water to bring the level back up and charge the battery.

2. Use a non-metallic object, such as a popsicle stick or the tube of a hydrometer, to check the depth of the electrolyte to the top of the plates. Insert this straight down through the acid to the top of the plates.

3. Remove the measuring stick and place it alongside a ruler. Measure the length covered by the acid. Write this number down.

4. Use a hydrometer to remove the electrolyte from one of the cells down to the top of the plates. Empty the electrolyte into a glass or plastic measuring container. DO NOT USE A METAL CONTAINER. Measure how many ounces of fluid you have removed from the cell. Write this number down.

5. Divide the the ounces by the inches to get your ounces per inch. Divide this by 2 to determine how many ounces of oil will be 1/2 inch.

Let's say you measured 2 inches of electrolyte and you removed 8 ounces of electrolyte from the cell. 8/2 = 4. 4/2 = 2. You need 2 ounces of Battery De-Mister per cell.

Battery De-Sulfater requires exactly half the amount of Battery De-Mister, unless you are treating a 2 volt industrial cell or forklift battery, then you will determine quantities by weight. Please see Battery De-Sulfater & Battery Equalization or call 800-221-5351 for special instructions.