SKU: 92632979470

Eco Energy Charge Controller PWM 3A 12V - S3 12V

Sale price$36.00 Regular price$40.00
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Ships within 48 hours · Estimated delivery Aug 22 - Aug 27

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Description

Eco Energy Charge Controller PWM 3A 12V - S3 12VThe Eco Energy S3 Solar Charge Controller is a compact, high performance PWM controller designed for small 12V off grid solar systems. Featuring 3 stage PWM charging (bulk, absorption, float), automatic night time shutdown, and temperature compensation, it efficiently manages battery charging while consuming minimal power. Fully encapsulated in epoxy potting within a sealed ABS case, it withstands harsh environmental conditions. With an ultra low 0. 2

The Eco Energy S3 Solar Charge Controller is a compact, high-performance PWM controller designed for small 12V off-grid solar systems. Featuring 3-stage PWM charging (bulk, absorption, float), automatic night-time shutdown, and temperature compensation, it efficiently manages battery charging while consuming minimal power. Fully encapsulated in epoxy potting within a sealed ABS case, it withstands harsh environmental conditions. With an ultra-low 0.2 mA night-time consumption, it is ideal for maintaining batteries in RVs, boats, cabins, gates, wildlife cameras, and other remote applications. Designed and built in North America.


Key Features & Benefits

3-Stage PWM Charging: Maximizes battery efficiency and longevity through intelligent bulk, absorption, and float charging stages, ensuring optimal charge without overcharging.

Automatic Night-Time Shutdown: Automatically powers down when the sun sets, reducing power consumption to an ultra-low 0.2 mA and preventing battery drain.

Temperature Compensation: Automatically adjusts charge voltages based on ambient temperature, protecting batteries from undercharging in cold weather and overcharging in heat.

Fully Encapsulated in Epoxy Potting: Completely sealed within a rugged ABS case, providing maximum protection against moisture, dust, vibration, and corrosion for reliable outdoor operation.

Ultra-Low Power Consumption: Consumes only 0.2 mA at night, 0.6 mA in daytime standby, and 2.5 mA during charging – preserving battery power for your loads.

Compact and Lightweight: Weighs just 50 grams (2 oz.) with dimensions of 1.5 x 2.75 x 1.3 inches, making it easy to install in tight spaces.

Smart LED Status Indicator: Provides clear visual feedback with three flash patterns: 3 flashes for charging, 2 flashes for bulk voltage achieved, and 1 flash for float mode activated.

Eco-Friendly Manufacturing: Built using solar power, reflecting a commitment to sustainable production.

5-Year Warranty: Backed by a 5-year warranty for long-term peace of mind.

North American Design & Craftsmanship: Engineered and built to high quality standards with local support.


Technical Specifications

Specification Detail
Manufacturer Eco Energy
Model S3 12V
Nominal Battery Voltage 12 VDC
Maximum Charging Current 3 Amps
Maximum Input Voltage (VOC) 25 Volts
Charging Stages 3-Stage PWM (Bulk, Absorption, Float)
Bulk Charge Voltage 14.4V
Float Charge Voltage 13.6V
Night-Time Power Consumption 0.2 mA
Daytime Standby Consumption 0.6 mA
Active Charging Consumption 2.5 mA
Temperature Compensation Automatic
Operating Temperature Range -40°C to 50°C (-40°F to 120°F)
Protection Features Fully encapsulated, sealed against elements
Warranty 5 years

Mechanical Specifications

Specification Detail
Dimensions (W x H x D) 1.5 x 2.75 x 1.3 in (3.8 x 7.0 x 3.1 cm)
Weight 50 g (2 oz.)
Case Material Sealed ABS, fully encapsulated in epoxy
Wire Leads 18 AWG, 15 cm (6 in.)

Custom Options (Contact for Quote)

Option Description
Disable Temperature Compensation Turn off automatic temperature adjustment for specific applications
Custom Voltage Setpoints Adjust bulk and float voltages for specialized battery types
Extended Wire Lead Lengths Pre-attached wires longer than standard 6 inches
Lithium Battery Protection Optional low-temperature charging cutoff (no charging below 4°C / 39°F)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 92632979470

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4.2 ★★★★★
Based on 5 reviews
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T
Verified Purchase
Tiffany Hammond
Boise, US
★★★★★ 5
Fastens to the windshield and stay secure
Preformed well Good value for money
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
M
Verified Purchase
MamaSylvia
Battle Creek, US
★★★★★ 4
This sticks to my Chrysler Pacifica!
I bought a new-to-me Chrysler Pacifica and of course wanted a phone holder or two for when my husband and I are travelling. I absolutely adore the car, but I've never had so much trouble finding a phone holder that would stick to the dash, no matter how thoroughly I cleaned it with alcohol! Finally found this one, but it only sticks if you do NOT activate the suction part. That pulls the sticky part off the dash. And it's not very attractive on top of the dash. I'm more concerned with function than appearance so I'm happy with it, and it works great. The phone stays put and stays charged, which is all I ask.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
D
Verified Purchase
Donna Gentile
Lowell, US
★★★★★ 5
A gift that the receiver loves and would recommend
I bought this as a gift for my son he has told me he loves it and works well,he would recommend it
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Reviewed in the United States on May 29, 2026
C
Verified Purchase
CheepersCreepers
Houston, US
★★★★★ 3
Imperfect, sometimes charging is unreliable, clamp needs power to work and annoyingly not auto
The build quality is great for the price. Like iOttie. The tech advancement is cool but it doesn't work very well which is a disappointment. It doesn't charge my phone very fast, because my phone is limited to 15 watt wireless charging, but it's great for preventing battery loss while using GPS. The button to manually clamp and unclamp are a little too hard to press, it flexes the whole holder, so you need to press with your whole hand supporting the holder. Sometimes my phone disconnects and reconnects randomly to this charger multiple times. Not sure if it's the charger or phone but that stinks . (I'm using an Anker 50w USB adapter for this wireless charger) The clamping is motorized which is cool, but it's honestly less reliable than a spring loaded clamp because it doesn't always auto clamp the phone. When this clamp is working properly it is great as it auto clamps onto a phone it's charging. But the issue is it doesn't always clamp. It sometimes thinks it's clamped, when it's not, so you have to press the manual activation button twice so the phone will be locked in place. It's hard to know when you need to press just once or twice. (The reason you press the button twice is if it thinks it's closed when it's actually open. Then you press first to "open" the clamp, even though it's already open, then press again to close it. But if it knows the correct clamp position already, and just refuses to auto clamp, you only press the button once. If you press twice, you will end up cancelling the clamp. It feels random and unpredictable what the correct action is) The clamping requires power which is another disadvantage to spring loaded hand clamps. But unclamping works without power due to a backup battery. (Powered clamping is still better than those manual squeeze clamps, which are finicky to get a strong enough clamp on the phone) I'm not sure how safe the battery is in a super hot car, like Florida heat. It seems fine for Pa heat.
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Reviewed in the United States on October 9, 2025
I
Verified Purchase
Iwona
Lake Worth, US
★★★★★ 5
Great product
UPDATE: Amazing customer service. I didn’t reach out, they did. After some adjustment shaking is minimal. Also regardless the charging. Well apparently my case is not compatible with fast charge. Phone charges fast without the case. Guess that has been my issue with other wireless charges. Definitely recommend. My husband went with another brand and now will be getting the same as mine. Cool idea but definitely not super fast charge. In 40 minutes charged only 10%, was expecting more. Hold phone well but it shakes while driving. Installation was super easy.
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Reviewed in the United States on July 31, 2025

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