Hi, has anyone tried one of thees? I'm looking to utilise excess solar to heat water but don't like the idea of cycling my batteries or burning up my other electronics powering a 2kw heater, I've see a bunch of diy projects etc but this seems like an off the shelf option. any input appreciated..
https://www.ebay.ie/itm/263523458861?itmmeta=01HQG1CBNGPXRAK1C1AP71ZYAS&hash=item3d5b38df2d:g:tbEAAOSw9BBkwqt2&itmprp=enc%3AAQAIAAAA4EMoKoqzxltvIdjgPmf4MgLB1dDwxyZwyd%2FuGEZY6vvzvxw237b2OR7UNTiRK3yquwCoWTkZ6AtN%2F4Vlxs7RlyoTCFDCDxci0OvpjIu30yz%2FLBsYgS6DuVYmPTvpva1Q%2BCedZ%2Bg%2FYB0B2jWeug5jbGpInei0VgRjo490AnZ59dEkiYysyq8z1DQMUxtqMx3kRQruIJ3mJI6PYoPZaaXc2i67F9zAt2%2FmMwncZhEhVL6KLVrYxDXJ3oTQCUwX9XaP9CMCcKpa%2BpljWXY0Zvqh%2BmDRXyZtfM3YX%2FXvwLPLGfU%2F%7Ctkp%3ABk9SR-i6sYG8Yw