Is it cheaper to buy a complete solar kit, or build one yourself from the parts? i'm planning to upgrade my van's old 12v 80ah 100W system to a 200ah and 2-300W system.

Is it cheaper to buy a complete solar kit, or build one yourself from the parts? i'm planning to upgrade my van's old 12v 80ah 100W system to a 200ah and 2-300W system. submitted by /u/roamingandy
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