The cell solution for a lead-acid battery is an electrolyte solution of distilled water and Epsom salt. If you want to reduce energy for long time, you should learn how to recondition a battery! In addition, you might do good volunteering or side job of reconditioning batteries. Set up your battery charger as far away from the battery as possible, and set it to a speed of 12 V per 2 amps. Apply the cleaning solution to any corroded battery terminal, then use the toothbrush or steel wool to scrub...