German solar battery charging uniformity

Germany sunshine battery voltage performance is good, in our country many kinds of standard requirements of the battery, such as the Ministry of culture and information of YD / T 799--1996 standard is required in the appropriate charging temperature of 2V battery voltage can not be a difference of about 50MV, in the open when the power voltage difference should not exceed 20MV; DL / T637--1997 power requirements the standard is 25 degrees, such as battery systems with 2V / battery, the open circuit voltage of a section of the highest and lowest section difference does not exceed 30mV, 6V / battery does not exceed 40mV, 12V / battery is not more than 60mV. In general, the number of parallel batteries should not exceed 4 sets. In order to prevent the premature failure of the whole battery system, it is necessary to put forward the requirements of the performance uniformity in the selection of CSB battery. When the battery model is determined, it is better to ask the manufacturer to provide the same batch of battery products in a UPS system in order to reduce the difference in performance. With this we can understand that the battery brand is not the same or the use of time is not the same, so between the index has the very big difference, according to my point of view, it is best not to put them together, or it will make the performance of a new battery behind. In the choice of VRLA, but also in a certain period of time for its maintenance and management, to prevent the German sunshine battery can not be used too early.