Hi, I'm thinking of investing in to some solar panels in my shed roof, I've already got lights set up running off a small solar panel from a set I purchased off Amazon. What I'm looking to run off the solar panel is a pond pump and a potential water feature. I don't really know where to start if anyone can offer some advice. The reason for wanting to set up pond pump from a main system is that I purchased the below pump with battery back a couple of years back the pump has now stopped working but the battery is still working, I cant seem to find pump replacement online (apart from the US where the post of the item makes the purchase uneconomical), rather than buy the same whole package again, thinking I could invest in a more reliable set up.

https://www.primrose.co.uk/300-lph-solar-water-feature-pump-with-lights-battery-back-solaray-p-106700.html

The potential water feature I'm thinking of below is again solar but thinking If I can covert to run off mains then I can run the water feature at night.

https://www.very.co.uk/smart-solar-h...B&gclsrc=aw.ds

Assume a low voltage (4w) pump and the above Mill wouldn't require a lot of power.Any advise would be great.

Many thanks!