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Pulse Tech

SolarPulse® SP-3 3-Watt Solar Battery Charger & Maintainer

SolarPulse® SP-3 3-Watt Solar Battery Charger & Maintainer

$99.50 USD
$99.50 USD $99.50 USD
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Part #: 735X453

Harness the free energy of the sun to keep your 12-volt lead-acid batteries fully charged and ready. The SolarPulse SP-3 delivers 3 watts of clean, renewable solar power paired with PulseTech’s patented Pulse Technology to prevent sulfation, extend battery life up to 3X, and eliminate the worry of dead batteries.

Perfect for cars, trucks, motorcycles, ATVs, boats, and seasonal equipment, the SP-3 is maintenance-free, spark-proof, and weather-resistant—making it safe for year-round outdoor use.

Problems This Product Solves:

  • No More Dead Batteries: Keeps batteries charged during storage or inactivity.
  • Reduce Battery Replacements: Extends service life by preventing sulfation and over-discharge.
  • Dependable Performance: Optimizes battery capacity for stronger starts and consistent output.
  • Off-Grid Reliability: Maintains batteries using clean, renewable solar energy.

Key Features:

  • 3-Watt Solar Charger: Maintains and conditions 12V batteries in cars, boats, trucks, RVs, ATVs, UTVs, and more.
  • Patented Pulse Technology: Reverses sulfation to restore and maintain optimal battery performance.
  • Safe for Long-Term Use: No risk of overcharging, overheating, or battery damage.
  • Durable, Weatherproof Solar Panel: Built to withstand outdoor environments.
  • Low-Maintenance Power Solution: Easy, plug-and-play setup for year-round use.

What Sets PulseTech Apart?

Unlike generic solar chargers, PulseTech Products deliver superior performance through:

  • Military-Tested & Approved durability.
  • Pulse Technology that extends battery life up to 3X.
  • Proven long-term savings by preventing premature battery failure.
  • Works with all 12-Volt lead-acid batteries including VRLA, AGM, gel and flooded cell
  • Commercial-grade crystalline cells are 30% smaller per watt than and twice as efficient as typical panels
  • Maintains the normal loss of battery power on seldom-used vehicles and equipment
  • Patented Pulse Technology circuit continuously desulfates the battery 
  • Virtually indestructible commercial design
  • Dramatically reduces jumpstarts
  • Maintains the battery indefinitely without the danger of overcharging or overheating
  • Reverse polarity protected
  • LED indicates unit is working
  • Ten-Year Limited Warranty

Model Name: SolarPulse 12V Solar Charger Maintainer, 3-Watt
Model Number: SP-3
Part Number: 735X453
NSN: 6130-01-388-0245

Input Electrical
Solar Powered

Output Electrical
Output Current: 240 mA
Output Voltage, Bulk Charge: 16.5 V dc

Mechanical/Physical Characteristics
Circuit Box Dimensions: 3.4" L x 2.25" W x 1.5" H
Solar Panel Dimensions: 4.7" L x 9.45" W x 0.25" H
Weight: 1.65lbs

Shipping Weight: 2.2lbs

Box to Lug Wire Length: 3'
Box to Panel Wire Length: 17'
Quick Disconnect Between Solar Panel & Circuit Box

Environmental
Operating Temperature: 0°F to 130°F
Storage Temperature: 0°F to 150°F

Indicator
LED shines brightly when the solar panel is in full sunlight and fades during partial sunlight

Warranty
10-Year Limited Warranty

Product Manual

Product Datasheet

Circuit box, 3' box-to-lug wire, and a 17' box-to-panel wire.
View full details

WHY DO YOU NEED A SOLAR CHARGER

  • Sustainable Power: Harness the sun's energy to keep your batteries charged

  • Extended Battery Life: Maintain and prolong your battery's lifespan

  • Reliable Performance: Ensure your power needs are always met

  • Effortless Maintenance: Let the charger do the work for you

  • Robust Design: Built to withstand outdoor conditions

Customer Reviews

Based on 32 reviews
72%
(23)
9%
(3)
3%
(1)
0%
(0)
16%
(5)
90.6
100.0
E
Ed S
Great for equipment the is only used once a month!

This is my third charger for use on equipment that is not used on a regular basis. They work fantastic. Shipping was very fast.

S
Steve Brinson

SP-3 SolarPulse™ Solar Battery Charger/Maintainer

T
Trent Quinn
Just right!

The right fit and with great prices and good quality.

M
Mark Flynn
This thing works.

This thing saves money & makes the tractor reliable even if I don’t use it for a month. Easy to install, easy to plug in & unplug. Instead of worrying whether my tractor will start, I know it will. Saves money.

S
Sang Le

SP-3 SolarPulse™ Solar Battery Charger/Maintainer

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