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The Y&H solar charge controller uses advanced MPPT technology to track the maximum power point. The tracking efficiency is not less than 99.5%, suitable for sealed lead-acid batteries, ventilated gel batteries, lithium batteries and other types of batteries. 100% MPPT Technology 20 A MPPT solar controller, if the battery is 12 V, the maximum input power of the solar panel is 240 W, if the battery is 24 V, the maximum input power is 480 W; if the battery is 36 V, the maximum input power of the solar panel is 720 W; if the battery is 48 V, the maximum input power of the solar panel is 96 V 0W 20A solar charge controller, automatic detection of 12V/24V/36V/48V. The rated charge current of the regulator is 20A, and the maximum charge conversion efficiency can reach 97%. The 20A solar controller features excellent heat dissipation design and multiple charge control modes: 24-hour working mode, light control mode and light and time control mode.