Does it need a battery to run?

No. The pump runs directly from the solar panels at 60–76V. A battery bank is only needed if you want to pump after dark or on very overcast days.

How deep a well can it draw from?

It is rated for a maximum head of 203 ft, so it suits deep wells and long pipe runs within that lift. Flow falls as head rises, so expect less than 9.6 GPM at full depth.

How much water does it move?

Up to 9.6 GPM at low head. Real output depends on sunlight, panel array size and how high the water must be lifted.

What comes in the box?

The submersible pump and a suction check valve. Panels, wiring and mounting hardware are separate, so plan the array around the 60–76V operating range.

Is it good for a small garden?

It works, but it is more pump than a small garden needs. It fits better where you have a deep source, a long run or plot-scale irrigation.

Can it run from mains power with an adapter?

It is designed for solar DC input at 60–76V. Running it from mains requires a suitable power supply that matches that voltage range.

Where is the Rocksolar 3.5 kW Off-Grid Solar System cheapest?

At Rocksolar Technology, for $3,999.99, as of our latest check.

Rocksolar 3.5 kW Off-Grid Solar System

Best price now

$3,999.99at Rocksolar TechnologyChecked Nov 11

Prices are checked against each store and labelled with when.

Visit Rocksolar Technology

Rocksolar 3.5 kW Off-Grid Solar System

Best price now

$3,999.99at Rocksolar TechnologyChecked Nov 11

Prices are checked against each store and labelled with when.

Visit Rocksolar Technology

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Price facts

Last seen at $3,999.99 at Rocksolar Technology on Nov 11.

Our take on the Rocksolar 3.5 kW Off-Grid Solar System

The Rocksolar 3.5 kW off-grid solar system is built around a submersible centrifugal pump that runs directly from a solar panel array at 60–76V, with no grid connection or battery bank needed. It moves up to 9.6 GPM and lifts water as high as 203 ft, which puts it in the range of deep-well and long-run irrigation jobs rather than small garden watering. The 1.07 HP motor and included suction check valve suit residential and agricultural water transfer. Against AC-powered transfer pumps it trades plug-in convenience for independence from the grid; against smaller solar pump kits it offers more head and flow, but it needs a properly sized panel array to hit its rated output.

Best forOff-grid homes and farms without reliable mains powerDeep wells and long pipe runs needing high headIrrigation of larger gardens and small plotsMoving water to tanks or fields from a distant source

Pros

Runs directly on solar power at 60–76V, no battery bank required
Up to 203 ft of head handles deep wells and long runs
9.6 GPM flow is enough for plot-scale irrigation
Submersible design keeps the pump out of sight and weather
Suction check valve included, so less to buy separately
Maker claims a 30-year lifespan with a linear power guarantee

Cons

Output depends on sunlight; flow drops on cloudy days
Needs a correctly sized panel array to reach rated voltage
Off-grid wiring and installation are more involved than a plug-in pump
1.07 HP limits it to transfer and irrigation, not high-volume supply
No battery means no pumping after dark without extra equipment

Rocksolar 3.5 kW Off-Grid Solar System prices at every store

Rocksolar TechnologyNew
In stockSold by USA
$3,999.99Checked Nov 11
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Rocksolar 3.5 kW Off-Grid Solar System price history

Lowest price we've seen: $3,999.99 on Nov 11 at Rocksolar Technology. Tracked across 1 store since Nov 11.

About the Rocksolar 3.5 kW Off-Grid Solar System

This is a solar-powered centrifugal water transfer pump kit for off-grid use. It runs on solar panel power and is a submersible utility pump. It is meant for outdoor use.

It moves water at up to 9.6 GPM, with a maximum head and pumping depth of 203 ft. It is used for water transfer, watering, residential gardening and larger agricultural irrigation. It works with residential and agricultural systems, and a suction check valve is included. The listing states a lifespan of 30 years with a linear power guarantee.

Type: Centrifugal water transfer pump, utility pump
Design: Submersible
Max flow rate: 9.6 GPM
Max head: 203 ft
Max depth: 203 ft pumping depth
Power: 1.07 HP
Voltage: 60-76V
Power source: Solar panel, off-grid
Uses: Water transfer, watering, residential gardening, larger agricultural irrigation
Environment: Outdoor; residential and agricultural
Compatibility: Residential and agricultural systems, irrigation systems
Lifespan: 30 years with a linear power guarantee
In the box: Suction check valve
Color: Black

Specifications

Product Type: Water Transfer Pump Kit, Centrifugal pump, Solar Pumps
Pump Type: Water Transfer Pump, Centrifugal pump
Pump Subtype: Utility pump
Maximum Flow Rate: 9.6 GPM
Maximum Head: 203 ft
Application Use: Water transfer, Larger agricultural irrigation, Residential gardening, Watering
Electrical Voltage: 60-76V (Best)

Questions and answers

Does it need a battery to run?: No. The pump runs directly from the solar panels at 60–76V. A battery bank is only needed if you want to pump after dark or on very overcast days.
How deep a well can it draw from?: It is rated for a maximum head of 203 ft, so it suits deep wells and long pipe runs within that lift. Flow falls as head rises, so expect less than 9.6 GPM at full depth.
How much water does it move?: Up to 9.6 GPM at low head. Real output depends on sunlight, panel array size and how high the water must be lifted.
What comes in the box?: The submersible pump and a suction check valve. Panels, wiring and mounting hardware are separate, so plan the array around the 60–76V operating range.
Is it good for a small garden?: It works, but it is more pump than a small garden needs. It fits better where you have a deep source, a long run or plot-scale irrigation.
Can it run from mains power with an adapter?: It is designed for solar DC input at 60–76V. Running it from mains requires a suitable power supply that matches that voltage range.
Where is the Rocksolar 3.5 kW Off-Grid Solar System cheapest?: At Rocksolar Technology, for $3,999.99, as of our latest check.