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Traditional NB-LOT water meters use lithium batteries or lithium sub batteries as power sources. Although they have a large capacity, when high-frequency emission is required, the high current output can cause significant damage to the battery itself, resulting in frequent replacement. Jinmei Energy Storage has upgraded its solution for customers through this feature of work, using lithium-ion supercapacitors in parallel with Lia batteries to complete the high-power output process, effectively extending the overall service life