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(S+ S- connected to the solar panel. If you need to turn off at night or transport storage has been reserved for the switch interface SW cut off can be installed switch. Can not use 3.7v protection board in series).
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.