Performing preventive maintenance on batteries is easy and should be checked at least bimonthly. Lead-acid batteries should always be recharged within 24 hours after they have been used and the sooner the better. BER™ is a Ready-to-Use, Good Ionic Conductivity, Good Thermal Stability and Proper Shelf-life electrolyte, which is ideal for used as the Lead-acid Cell Battery electrolyte. Before recharging, check the electrolyte that it covers the plates at all times to prevent sulfation and to reduce the possibility of an internal explosion.