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2014 newest PWM solar charge controller

FOB Price: US $15 - 30 / Unit | Get Latest Price
Min.Order Quantity: 100 Unit/Units Solar charge controller
Supply Ability: 1000 Unit/Units per Week Solar controller
Port: Ningbo/Shanghai
Payment Terms: L/C,T/T,Western Union,MoneyGram
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Quick Details

Place of Origin:
Zhejiang, China (Mainland)
Brand Name:
Model Number:
Charger Controller
Rated Voltage:
Maximum Current:

Packaging & Delivery

Packaging Details: Standard Export Packing
Delivery Detail: In 5 days

Solar charge controller
1. 12/24V automatic recognition
2. OEM service
3. CE & RoHS certificate
4. 2 years warranty 



SML series


l  Battery State-of-Charge display with 3 LEDs

l  Acoustic load disconnect pre-warning

l  PWM-regulation (series type)

l  Boost, Equalize and Float charging, also for VRLA

l  Integrated temperature compensation

l  Large terminals (up to 24mm2 wire size)

l  SOC and voltage controlled LVD

l  Fully electronically protected



The SML series is a sophisticated solar charge controller family for low cost applications.


The electronic circuit is equipped with a microcontroller that provides high-efficiency charging technology together with a number of outstanding status display, warning and safety functions.


The temperature-compensated three-stage PWM charging method (boost-equalization-float) is now adjustable to sealed and vented lead-acid batteries. The new version also allows an either SOC or voltage controlled low voltage disconnect function.


The battery status is clearly indicated by three LEDs.


As the first controller on the market in this price range it comes with an acoustic low voltage load disconnect pre-warning feature.











Nominal voltage:

12/24V automatic recognition

Max. module current







Max. load current







Boost voltage


Equalization voltage


Equalization voltage13.7/27.4V

Deep discharge protection

11.4-11.9V/22.8-23.8V controlled by state of charge 11.0/22.0V controlled by voltage

Load reconnect voltage


Temperature compensation


Self consumption


Max. wire size

16mm ²(AWG#6)





Temperature range


Type of protection





SX series


l  Battery State-of-Charge display LCD

l  Charge and discharge status display

l  Acoustic load disconnect pre-warning

l  Load status indication

l  Choose between 5 load disconnect algorithms

l  Boost/absorption/float PWM-regulation (series type)

l  Integrated temperature compensation

l  Covered terminals(up to 16mm2 wire size)

l  Full solid-state protection



The SX series is a sophisticated solar charge controller family with exceptional features in this price range. Beside a perfect PWM regulation with integrated temperature compensation the controllers provide extraordinary display, programming and safety functions.


 The battery state of charge is clearly displayed with a bar chart, as well as energy flows from and to the battery and the load status (e.g. overload, load short circuit). The deep discharge protection function can be set up to three different modes: voltage controlled, SOC controlled or adaptive (fuzzy logic).


 Acoustic warnings are built in, also A programmable nightlight function.


 The compact case design is prepared for DIN rail mounting (mounting device available as an accessory).


Charge Current Max.10A20A30A40A
Load Current Max.10A20A30A40A
System Voltage12/24V12/24V12/24V12/24V
Self Power Consumption<4mA<4mA<4mA<4mA
Ambient Temp. Range-25 to 50 °C-25 to 50 °C-25 to 50 °C-25 to 50 °C
Type of ProtectionIP22IP22IP22IP22



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Our company (called "Saip" for short) is an enterprise specialized in the design, production and sales of electric equipment. Our office is located in the largest manufacturing base of electric equipment of Wenzhou, which is called "the Electric Equipment Capital of China".

Saip has five specialized branches, and over 300 specialized cooperative partners. Saip, an ISO9001 certificated enterprise, has modern production lines and high quality controlling equipment w... View detail

Basic Information

Business Type: Manufacturer, Trading Company  
Main Products: Solar Charge Controller,Solar Power System,Water Proof Box,Distribution Box,LED Controller,LED Lens,Temperature Controller,Heater,Wind Turbine,Inverter,Industry Plugs and Sockets,Terminal(All products only for oversea)  
Number Of Employees: 101 - 200 People  

Trade & Market

Main Markets: Africa
South America
Eastern Europe
Southeast Asia
Mid East
South Asia
North America
Eastern Asia
Western Europe
Central America
Northern Europe
Southern Europe
Total Annual Sales Volume: US$10 Million - US$50 Million  
Export Percentage: 51% - 60%  
Trade Shows: Hong Kong Electronics Fair    

Factory Information

Factory Size (Sq.meters): Below 1,000 square meters  
Factory Location: 2F, No. 3 Building, No. 688, Station Road, Liushi Town, Yueqing City, Zhejiang Province, China  
No. of Production Lines: Above 10  
Number of R&D Staff: Less than 5 People  
Number of QC Staff: Less than 5 People  
Contract Manufacturing: OEM Service Offered   Design Service Offered   Buyer Label Offered  

Supplier Assessment Report

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How It Works

China (Mainland) | Manufacturer, Trading Company | Contact Details
Key Strengths: Assessment Report by TÜV Rheinland
Top 3 Markets: Africa 12.00%, South America 10.00%, Eastern Europe 10.00%
Experience: Established 2010 , 5 years OEM

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Mr. Danny Huang
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