- Add water, never acid, to cells. (Distilled water)
- Do Not Overwater
- For fully charged standard deep cycle batteries, add water to the level of 1/8 below bottom of vent well
- If the batteries are discharged, only add water if the plates are exposed. Add just enough water to cover the plates, then charge the batteries. Once fully charged, add water to the proper level indicated above.
- After watering, secure the vent caps on the batteries.
- Open the vent caps and look inside the fill wells.
- Check electrolyte level; the minimum level is at the top of the plates.
- If necessary add just enough water to cover the plates at this time.
- Put batteries on a complete charge before adding any additional water.
- Once charging is completed, open the vent caps and look inside the fill wells.
- Add water until the electrolyte level is 1/8″ below the bottom of the fill well.
- A piece of rubber can be used safely as a dipstick to help determine this level.
- Clean, replace, and tighten all vent caps.