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Prices, terms, and availability may vary online, in stores, and in–app. If the advertised price is not shown here, inventory at the advertised price may now be sold out. Please see the other offers, if available, while quantities last. Some items may be available from Marketplace Sellers, who set their own prices, and are not eligible for price match. Items sold in store by Walmart may be eligible for a price match to online items shipped and sold by Walmart. For variable weight items, price shown is an estimated price only – you will be charged for the actual weight of the item. See our

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3.7V Battery  Module, 1A 4.2V 3.7V  Lithium Battery  MPPT Solar  Controller Module, Unique Power, Controls

<ul><li>Lithium battery for solar powered system</li><li>Power supply voltage DC 4.4-6V, charging output voltage DC 4.2V</li><li>Maximum charging current/output current is 1A, but you can change the current by changing the value of the R1 resistor</li><li>Automatically adjust the charging current according to the output capacity of the input power supply</li><li>Precharge adjustment for restoring deep discharge batteries and minimize heat dissipation at the initial charging stage</li></ul>

Specification: Item Type: Lithium Battery Solar Module LED Indicator: ''CR'' LED is status indicator; ''OK'' LED is fully charged OR constant voltage mode Dimension: 18x10.16x2.7mm Options: with Pin, without Pin Weight: 0.9gwith Pin, 0.6gwithout Pin Instruction: The adaptive unit on the module can adjust charging current automatically based on the output capability of input power supply, so it is ideal for the solar-powered systems, or the applications that need to lithium-ion battery or lithium battery with an input power supply whose output capability is limited. If your solar panel is 5V, then you can use it directly. Of course, the module can also be powered by a 5V DC power supply. Package List: 1 x Solar Module