Solar DC pump package with controller

[TomA7400]

I run one of those pumps off 2 100w 12v panels in series (24v). In full sun it spins pretty good. If cloudy it spins more slowly but still pumps. No charge controller.

[fivewin]

No. The charge controller requires a battery to work.

The pump looks like a Shurflo 9300 knock off. The Shurflo pump can be ran solar direct or with a LCB. I run one on my well. Being a knock off I can't say if that one can.

WWW

I have already ordered and expect to recieve it within 2 weeks. I will then try directly to the panel and also with a dummy battery connected to the chargecontroller. Still have an old motorbyke battery. Only for some pumping each day a motor/car battery is i think no problem. The panel gives more watt than the pump with full sun.

[bcroe]

But, it is amazing the price difference. A similar BUCK converter can be changed
into a linear current booster for 50 cents. That 24V pump kit with panels costs about $380 in the US.

The price of solid state components in quantity has become extremely low. But a practical product
still needs design, mfr, marketing, and other overhead. If the demand is small, the price may be high.

What we need is more public info on how to convert cheap components to do specialized jobs like
an LCB. Bruce Roe

[Wy_White_Wolf]

So if i only connect the panel and pump to the controller (no battery) the pump will run with that 100Wp panel

No. The charge controller requires a battery to work.

The pump looks like a Shurflo 9300 knock off. The Shurflo pump can be ran solar direct or with a LCB. I run one on my well. Being a knock off I can't say if that one can.

WWW

[PNPmacnab]

But, it is amazing the price difference. A similar BUCK converter can be changed into a linear current booster for 50 cents. That 24V pump kit with panels costs about $380 in the US.

[Mike90250]

No. that is a link to a DC-DC module.
This is a link to a solar LCB

https://realgoods.com/solar-renewable-energy/solar-water-pumps/linear-current-boosters

[fivewin]

Mike, about the lcb , is this what you mean?

https://www.lazada.co.id/1200w-20a-dc-dc-converter-booster-step-up-power-supply-module-contant-voltage-amp-current-intl-14286186.html

[fivewin]

Sounds like a deal. My search shows the pump costing that much alone and that pump model being 24V. Post a link, I might buy one.

It is Lazada Indonesia, but the seller is based in China. If you r in Indonesia its free shipping and COD also possible

https://www.lazada.co.id/high-power-100w-solar-panel-kits-with-12v-deep-well-water-pump-for-farm-washing-intl-63257443.html

On ebay its double the price & more.

[PNPmacnab]

Sounds like a deal. My search shows the pump costing that much alone and that pump model being 24V. Post a link, I might buy one.

[sensij]

That is a terrible photoshop mash-up of some components that used to be sold by "Eco-worthy". It requires a battery to function properly.

[Mike90250]

I would confirm with the vendor that it will work in the mode you chose.

Batteryless systems usually use a Linear Current Booster to run a simple DC motor. LCB's don't want a battery. The picture looks like a conventional battery controller (but it's a tiny thumbnail).

[fivewin]

Ok thanks again for your reply.

About 130usd for this package incl the panel is i think a very good deal.

[SunEagle]

It is hard to say what will happen. I do know that unless you have perfect sunlight hitting that panel the pump will not run to it's full potential and may be so slow it doen't pump and water iy you have too much of a head.

A battery will even out the running of the pump to keep it from sputtering or slowing down due to low sunlight.

[fivewin]

So if i only connect the panel and pump to the controller (no battery) the pump will run with that 100Wp panel

[SunEagle]

That pump may work just using the 100watt panel but the charge controller does have the ability to charge a battery which will keep the pump running even if the sun isn't out.

Since that panel can deliver a max of 4 amps your battery should not be bigger than 45Ah