Step 1: Purchase Ingredients.
also you will need a face mask. long sleeves, safety goggles and water on hand.
this job could cause death or serious harm from explosions and acid spills.
you will also need a battery charger, applicator bulb and common sense.
Step 2: Drill Holes Into Vent Caps Or Remove Caps.
use a pneumatic drill a regular drill could cause sparking or explosions.
you have two choices.
1.fully flatten the battery to sulfate the plates. this will produce a super saturated acid.
2. fully charge the battery. check with hydrometer that the electrolyte is 12.5 to 13.00. this indicates 80 to 100% charge.
Step 3: Create Saturated Aluminum Sulfate Solution.
it takes a long time but you should be able to get a reading of 12.5 or more specific gravity easily.
if you heat the water or add too much the aluminum sulfate will precipitate when the electrolyte cools.
Step 4: Tip Out The Acid From Battery.
Step 5: Add Electrolyte
feel free to use any ratio. I have found 20% sulfuric acid to aluminium sulfate works the best.
100% tends to precipitate and provide low cca.
Step 6: Charging
gassing starts at 14.7v and gets rapid at 15v plus.
I use a turnigy charge set to 7 cell mode. it will cut out at 17.1v. but the battery only reaches 16.8v so you need to turn it off manually.