Pro Charging Systems Battery Maintenance     Battery Discharger and Battery Balancer can be used to sort and regroup like batteries to eliminate unbalanced batteries in a bank, thus extending the lifetime of batteries. Balanced batteries in a bank charge evenly, more completely and last longer. If a battery pack is discharging quickly or showing signs of end of life, each battery can be fully discharged and then recharged independently (using the Battery Balancer) to its full charge. Then each fully charged battery is again discharged and timed to see how long it takes. Still useful batteries can be sorted based on discharge times with like batteries grouped together to form a balanced battery bank. Individual underperforming batteries in a bank can be replaced as needed with other like batteries, thus extending the life of the batteries and keeping your equipment charged and ready to perform. This type of battery maintenance keeps battery banks performing at optimal levels and supports significant improvement in equipment performance and longer battery life.   All 2 day and overnight orders must be placed no later than 1:00 PM EST. Otherwise, order will be shipped the following business day.