Total cost of my current solar system consisting of harbor freight solar panels

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My solar system has been in operation since late June of 2023. It seems to be still fully functional, batteries appear healthy. Here is an outline of what I got for what I paid. The total cost of my solar system cost $317.00.

I already had 1 previously used car battery but I had to purchase another battery to put them into parallel (to store more electricity). My solar system consists of 5 solar panels, 2 charge controllers and 2 car batteries. This system produces about ~220 watts when the sun is out.

What I do with my solar system

My solar system operates 48 ft of LED light strips at night, a wireless access point 24/7 with plans to incorporate security cameras.

Breaking down the costs

• 100 WATT Thunderbolt Panels @ 109$/pc X 2 = $218
• 30 AMP MPPT Charge Controllers @ 15$/pc X 2 = $30
• 595 CCA Car battery @ $69/pc x 1 = $69

Costs not counted

The original 45 watt solar panel kit was already in place since 2010 from a previous project. They still produce electricity so why not incorporate them into this project? They were a part of a $250.00 kit at that time, from harbor freight. Additionally, I already had the one car battery so I only had to purchase 1.