Solar Fountain Water Pump Backup Battery 14.8V 2600mah for ECO-WORTHY 12Watt/25Watt Solar Fountain Pump Kit

I started out first with just just the 12W pump. I am using it in a bird bath. The pump and solar panel work great- but only when fairly bright sunlight is directly hitting the panel. I guess that should be an obvious limitation of something that is solar, but I still found it a little surprising that it needed such strong light. I then decided to try this battery. My only expectation was that it would keep them pump going when clouds where passing over, or there were brief periods of shade. It did all that- and a lot more. The pump now stars running much earlier in the morning, before it is even getting much direct sun and then it just runs pretty steadily, even on cloudy days. In general- it's just made the pump a whole lot better. I cannot speak to its longevity, because I've only had it a few weeks, but it looks well made. Hopefully it will last. I'm very glad I bought it and would recommend to anyone with this pump.

Easy to set up. Good quality; works great. Great flow.

Setup was easy peasy. Instructions were clear, and the battery came pre-charged, so I was able to use it right away. There’s no indicator for battery level though, so I honestly have no idea how long it takes to fully charge via solar. The only way I know it’s out of power? When the fountain just stops. LOL. I don’t know the exact runtime, but one night we came home around 12:30 AM and the fountain was still going. The flow wasn’t strong, but it was steady like a pee, LOL. My setup uses a PVC pipe to create that effect—no splash, no arc, just a calm, continuous stream. It really adds a peaceful vibe to the garden, like a tiny spring in the background. By 5 AM it’s usually off, so the battery seems to last until sometime between midnight and early morning. That said, it’s nice to hear the water at night when we’re relaxing in the pergola. It gives the space a calm, soothing feel. Here’s the trade-off: without the battery, the fountain is stronger—like noticeably stronger. As soon as the sun hits the panel, the water pressure is great. But it shuts off as soon as the sun sets behind my neighbors tree. With the battery plugged in, it lasts longer into the night, but the flow is weaker—even during the day. I think the panel splits its power between charging the battery and running the pump, so you lose a bit of performance. I added the ECO-WORTHY 16.4 ft extension cord. Game-changer. It lets me mount the solar panel higher up where the sun hits it better, but I can still access the connector easily down below. That’s where I plug in the battery when I want extra hours of runtime. Honestly, if you’re picking between the battery or the extension cord, get the cord first. Better sun placement really helps performance. My routine now? I charge the battery with the wall plug and only use it when we plan to hang out in the garden after sunset. That way, we enjoy full power during the day and keep the vibe going into the evening. So is it worth it? If you want strong water flow during the day and we'll only be hanging out the garden during daytime, skip the battery. If you want longer runtime into the night, buy the battery. Want both? Do what I do—charge the battery separately and plug it in only when needed. Long-term durability? We’ll see. For now, it works for what I need. Also check my video and you'll the fountain runs noticeably stronger when the battery isn’t connected.

Three months after setting up this fountain, with the battery pack, there is some electrical issue with it. The cords are connected, but often do not run, even in bright sunlight. I have to mess with the cords and plug and unplug and it MAY start running again. A waste of money. Buy something else, won’t waste your money on this garbage, that worked for maybe three months!

Easy to use and holds power well. The solar plane it attaches to could be better but the battery is very functional.

The battery has worked most of the summer but now it won't turn on the pump once the sun comes back in the morning. I have to unplug and replug the pump from the battery to get the pump to start up again. That's really annoying. The solar panel directly connected works. the sun is shining and the battery is getting charged but it won't send current to the pump until it's reconnected.

For those that say the solar panel has no out put if a cloud passes by this is the solution to maintain the pump. so far the panel battery and pump have pumped 20,000 gallons. I used this to pump ou a swimming pool. LOL

I got this to go with a solar water pump for my fountain. If you walked in front of the panel the pump would shut off, now I think the pump runs constantly. It says flow would reduce going thru the battery but I have yet to notice any lack of force. A Must if using solar panel-