One of the most critical rules in UPS maintenance and safety is performing a regular battery test. Our software offers a scheduling function for this task. If batteries are not checked regularly following situations may happen: • Battery capacity will decrease over time and reach a point where it cannot support the load long enough. It might even render the UPS unusable. • Continuous charging of faulty batteries may lead to leaks, swelling or even burning of the battery. Basic Battery Test The software will perform a 10 second battery test. Please note that the test only proves that the battery will hold the connected load for 10 seconds. Hence, the test will only determine if the battery is not depleted. We recommend the basic test at least once a month. Real Life Test Since the typical expected backup time is much longer than 10 seconds, we recommend a real life test to ensure the proper functionality of the UPS system. Please cut off the input (i.e. by switching the input breaker or unplugging the input cable) and measure how long the UPS can backup the load. Knowing the load in watts (you can read it in the monitoring software), you can compare it with the real performance. Feel free to contact our support team if you need a recommendation. This will give you the best overview of the batteries condition. You can also monitor the backup time changing over the lifespan of the batteries. If it drops below your requirement, please change the batteries. We recommend to perform the real life test with the following schedule: At the very beginning of any operation Every 6 months in the first 2 years Every 3 months after 2 years