I've been lurking on here for ages and finally taking the plunge on a small off-grid setup for my shed/workshop. Not a campervan build or anything ambitious — just want to run some LED lighting, charge my phone and laptop, and maybe power a small 12v fan in summer. Basically trying to keep it as cheap as humanly possible without buying total rubbish.
I've been looking at a 100W panel from a seller on eBay (about £55), a 20A PWM controller (£12-15), and a leisure battery from Halfords which seems to be around £80-90 for a 100Ah. That already puts me close to £160 before I've bought a single bit of cable or a fuse holder. Starting to wonder if I've missed somewhere obvious to save money.
The thing I'm most unsure about is the battery — is a brand new Halfords one actually worth it at that price, or would I be better hunting for a secondhand battery locally? Seen a few on Facebook Marketplace for £20-30 but obviously no idea what state they're in. Bit nervous about buying a dud.
Has anyone actually put a functional little system together for £200 or less in the last year or two? Would love to know exactly what you bought and where from — real figures, not theoretical ones.