VEVOR Dual Battery Isolation Kit, 6m 12V, Auto Split Charge Relay System with 140AMP VSR, Fits RVs, Marine Crafts, Cars, Trucks, Caravans, Campers, Yachts, ATVs, UTVs, and Boats Workshop

Yes, and you can refer to the link below. https://we.tl/t-ESnf2alKFQ

Sorry, we don't have any accessories for sale at the moment. You can refer to ANS-H2 Small Forkbolt 80A Fuse to purchase.

Yes, it can charge a main lead acid battery and a secondary lithium battery safely without problems.

We have verified that it can be used, but it cannot be used for a long time, as it will harm the lithium battery for a long time, because the lithium iron phosphate battery is 14.6V when fully charged.

Here is the link to the manual: https://d2v0huudrf11kh.cloudfront.net/vevor-center-goods/%E9%9A%94%E7%A6%BB%E5%99%A8%E7%BA%BF%E6%9D%9F%E8%AF%B4%E6%98%8E%E4%B9%A6_1691225088840.pdf.

Yes, it can be used to charge two different batterys from the same solar system.

The total length of the red line is 6m/19.68 feet and the black line is 1m/3.28 feet.