Batteries At the end of the rated duration the battery voltage is designed to be no less than 90% of the nominal voltage. that inverters can start the lighting load in the mains failed mode and that they are capable of permanently handling 120% of the load requirement for the rated duration. We also make sure that in accordance with BS 50171:2001 section 6.5.3. The units will be sized in accordance with BS EN 50171. Rating Our systems are designed to provide total connected emergency lighting load and will have a battery capable of providing either 1 or 3 hours autonomy for the life of the system. The information below provides an insight into some of the criteria we use when designing our systems. To provide clients with the best solutions we undertake regular reviews of all the products we specify to make sure they meet with our high standards. To deliver successful projects it is critical that the components and features will last for the life of the system.
