Can the OptiMate Y-Splitter Cable be Used to Split a Solar Panel Power to 2 Different Controllers?
Updated 08/12/2025 | Published 08/10/2025
Question:
I am looking to use this Y splitter to split the power coming in from my Battery Tender Solar Panel to two controllers so I can them keep two batteries connected at the same time - I have found that you cannot split after the controller, so I need to split before “it” and add a second controller running the 35 watt Batter tender solar panel
asked by: John D
Expert Reply:
Hey John, thanks for reaching out!
The Y-Splitter Cable # MA93BR is designed for a single battery source to send out power to 2 different locations, but it won't work by connecting 2 different solar controllers to the same solar input. You can only have 1 solar controller connected in, and if you have 2 of them in this splitter, they won't play nice together.
Just so I understand, you're trying to take a single solar panel input, and then have that power feed out to 2 different controllers and 2 different battery banks?
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Y-Splitter Cable - SAE to Twin SAE for OptiMate Battery Cable - 20" Long
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John D.
8/11/2025
You are correct - that is what I was hoping to do. Looks like I will have to have 2 solar panel Battery Tenders instead. (One for the electric jack on the front of the cargo trailer and one for the side by side inside the cargo trailer). Thanks.