Batteries are the critical component in any UPS installation. Testing monitors the internal resistance and will show cells which are degraded, abnormal or weak and could lead to battery failure. An electrical current is passed through each battery sequentially to decipher the internal impedance of each battery. As a battery ages its impedance increases, where a lower internal resistance generally indicates a higher capacity. An increase can indicate declining battery capacity, or degradation. We use calibrated test equipment giving accurate and reliable information on the condition of your battery system.