- Solar Controllers
- Solar Batteries
- Solar Panels
- Solar Lights
- Power Inverters
Solar Charge Controllers
High performance,Wellsee solar charge controllers suitable for both 12V and 24V or 48V systems.- Battery System Monitor
- Temperature Compensation
- LCD Display with battery volts and temprature
- Lightning Protection
- Automatic Selection of Voltage 12V/24V or 48V
- Wide Temperature Working Range of -35°C to 55°C
Solar Lighting Controllers
A complete Solar Lighting Controller used to charge the battery during the day, turn on a light at night.- Lightning Protection
- Adjustable Resistance
- lights and time control
- Automatic Selection of Voltage 12V/24V or 48V
- Wide Temperature Working Range of -35°C to 55°C
MPPT Solar Charge Controllers
Wellsee Maximum Point Power Tracking charge controls for solar electric panels,it's cheap for you choose!- Lightning Protection
- Automatic Selection of Voltage 12V/24V or 48V
- Wide Temperature Working Range of -35°C to 55°C
Gel Batteries
This category features a variety of 12V Gel solar batteries,offered at different amp 1Ah to 200Ah,- Maintains car, SUV, Boat, ATV, and power pack Batteries
- Charges in all weather conditions (voltage varies with light level)
- Plugs into cigarette lighter for automotive use.
- Alligator battery clamps included for boat, ATV, or power pack use.
- Mounts on windshield or side window with suction cups, included
- Temperature Range: -40°C to 176°C
Lead Acid Batteries
This category features a variety of 12V lead-acid solar batteries,offered at different amp 1Ah to 200Ah.- Maintains car, SUV, Boat, ATV, and power pack Batteries
- Charges in all weather conditions (voltage varies with light level)
- Plugs into cigarette lighter for automotive use.
- Alligator battery clamps included for boat, ATV, or power pack use.
- Mounts on windshield or side window with suction cups, included
- Temperature Range: -40°C to 176°C
Monocrystalline Solar Panels
Wellsee monocrystalline solar panels provide 10W to 50000W Custom,You can choose according to your requirements for your solar panels- Supplied with factory fitted aluminium frame
- Multiple pieces can be connected to acquire higher power
- Ideal to charge 12 Volt batteries of all types
- Supplied with blocking diode to prevent reverse charging
Polycrystalline Solar Panels
Wellsee polycrystalline solar panels provide 10W to 50000W Custom,You can choose according to your requirements for your solar panels.- with high quality and consistent performance come from abroad
- Junction-boxes and connectors are of top quality
- High transmission, low iron and tempered glass
Solar Garden Lights
Solar garden lights to ensure that you are in the garden, walkways, garden deck and look at things more clearly.- Automatic sensors
- A perfect addition to your yard and garden!
- Line a garden border or walkway with these charming lights
Outdoor Solar Lights
Outdoor solar lights to ensure that you are in the street, walkways, garden deck and look at things more clearly.- ambient lighting that will add elegant style to any outdoor space.
- perfect for accenting trees, patios or can be used to line a driveway or sidewalk.
- Traditional style
Solar Landscape Lights
In addition to increasing visibility and safety in your yard or garden, solar landscape lights are also highly cost efficient and can reduce your electric utility bill.- Durable weather-resistant metal construction
- Simple yet elegant design
- Rechargeable NiCd Battery (included)
- Turns on automatically at dusk for up to 8 hours
Car Power Inverters
Wellsee car power inverters support 12V car battery converter to hight voltage,then You can use your low-power electrical on board.- Low Battery Alarm
- Low Battery Auto Shutdown
- Overload and Short Circuit Protection
- Input Polarity Reverse Protection by Fuse
- Compact Size, Light Weight & High Efficiency
- High Surge Current Capacity. Easy to Start for TV, Motors & Other Inductive Load
Modify Wave Inverters
Wellsee modify wave power inverters changes DC power from a battery into conventional AC power that you can use to operate all kinds of devices.- Input voltage: 12 or 24V DC
- Output voltage: 110 to 120 or 220 to 240V AC
- AC output sockets: BS + diamond or Shuko + diamond or American socket
- Low battery alarm and shutdown, overvoltage shutdown, overload protection Short-circuit protection, over temperature alarm and shutdown
Sine Wave Inverters
Wellsee Sine wave inverters Provides 1000 and 6000 watts of sine wave AC power from a DC source Offering superior quality true sine wave output.- Input voltage: 12 to 48V DC
- Output voltage: 110 to 120 or 220 to 240V AC
- Output power:1000 to 6000 watts
WellSee Solar Power Systems Products Modules Manufacturer
The Photovoltaic Generation System
Written by Wellsee Solar Saturday, 23 January 2010 11:17
A solar photovoltaic power generation system is composed of a solar battery pack, a solar energy controller and a storage battery (pack). And an inverter should be equipped if a 220V or 110V AC output power supply is needed. The function of each component is illustrated below:
The solar panels are the core of a solar power generation system, which are also the part of highest value in a solar power generation system. The function is to transform solar radiation energy into electric energy to drive the load to work with the energy or store it in storage batteries. The quality and cost of solar panels decide the quality and cost of the entire system directly;
The function of a solar energy controller is to control the working condition of the whole system, which can also play a protective role in preventing overcharge and over discharge for the storage battery. And in some places of large temperature difference, a qualified controller should also have the function of temperature compensation. Other extra functions such as photo switching and time-controlled switching should both be the options for the controller;
They are generally lead-acid batteries, and nickel-hydrogen batteries, nickel-cadmium batteries or lithium batteries are also available in a small micro-system. The function is to store up the electric energy produced by the solar panels in the sunshine and release it when needed;
A 220V or 110V AC power supply is needed in many situations. Since the solar energy directly outputs 12V DC, 24V DC and 48V DC generally, it is needed to transform the DC electric energy produced by a solar power generation system into the AC electric energy in order to provide the electrical power for 220V AC electrical appliances, a DC-AC inverter is needed then. A DC-AC inverter is also needed in some situations when it is necessary to use the load of multiple voltages, e.g. transforming 24V DC electric energy into 5V DC electric energy (Note: It is not a simple voltage reduction).
What is MPPT solar charge controller?
Written by Wellsee Solar Tuesday, 19 January 2010 09:10
1.What is MPPT solar charge controller?
A maximum power point tracker (or MPPT) is a high efficiency DC to DC converter which functions as an optimal electrical load for a photovoltaic (PV) cell, most commonly for a solar panel or array, and converts the power to a voltage or current level which is more suitable to whatever load the system is designed to drive.
2.MPPT solar charge controller - Main features
In any applications which PV module is energy source, MPPT solar charge controller is used to correct for detecting the variations in the current-voltage characteristics of solar cell and shown by I-V curve.
MPPT solar charge controller is necessary for any solar power systems need to extract maximum power from PV module; it forces PV module to operate at voltage close to maximum power point to draw maximum available power.
MPPT solar charge controller allows users to use PV module with a higher voltage output than operating voltage of battery system.
For example, if PV module has to be placed far away from charge controller and battery, its wire size must be very large to reduce voltage drop. With a MPPT solar charge controller, users can wire PV module for 24 or 48 V (depending on charge controller and PV modules) and bring power into 12 or 24 V battery system. This means it reduces the wire size needed while retaining full output of PV module.
MPPT solar charge controller reduces complexity of system while output of system is high efficiency. Additionally, it can be applied to use with more energy sources. Since PV output power is used to control DC-DC converter directly.
MPPT solar charge controller can be applied to other renewable energy sources such as small water turbines, wind-power turbines, etc.
3.Compare to the traditional solar charge controller
The most traditional charge controller simply monitors the battery voltage and opens the circuit, stopping the charging, when the battery voltage rises to a certain level. Older charge controllers used a mechanical relay to open or close the circuit, stopping or starting power going to the batteries.Traditional Solar Inverters perform MPPT for an entire array as a whole. In such systems the same current, dictated by the inverter, flows though all panels in the string. But because different panels have different IV curves, i.e. different MPPs this architecture means some panels will be performing below their MPPT, resulting in the loss of energy.
4.Compared with normal solar charge controller by Schematic Diagram
MPPT solar charge controller Schematic Diagram: Picture 2 shows typical 12V battery solar charge system V-A curve.
Normal Solar Charge Controller: Solar Panel works at point A state, the solar panel working voltage is a little higher than battery voltage.
Charge Voltage: UA=13.2V
Charge Current:: IA=9.8A
Charge Power: PA=13.2*9.8=129.36w
Area in drawing: ①＋③
MPPT Solar Charge Controller: Solar Panel works at point B state, the solar panel working voltage much higher than battery voltage.
Charge Voltage: UB=18.4V,
Charge Current:: IB=9.3A
Charge Power: PB=18.4*9.3=171.12w
Area in drawing: ①＋②
DRAWING 
△P/ PA =（PB— PA）/ PA＝32..3%
As a result of different manufacture of solar panels, different solar illumination intensity, different temperature, different efficiency of solar charge controller and so on. The effective power increase rate is 30%.
5.The benefits of MPPT solar charge controller
The benefits of MPPT solar charge controller are greatest during cold weather, on cloudy or hazy days or when the battery is deeply discharged. Solar MPPT can also be used to drive motors directly from solar panels. The benefits seen are huge, especially if the motor load is continuously changing. This is due to the fact that the AC impedance across the motor is related to the motor's speed. The MPPT will switch the power to match the varying resistance.
6.The price of MPPT solar charge controller
MPPT charge controllers are more expensive that PWM charge controllers, but the advantages are worth the cost. If you can afford it, you should definitely use an MPPT charge controller.
7.Wellsee MPPT Solar Charge Controllers(12V、24V、48V): 
Model: MPPT 10 Amp Solar charge controller
Rated Voltage DC: 12V / 24V
Max Current:10A
Zero Loaded Losses:≤45mA/12V / 24V
Full Charge Cut:14V/12V,×2/24V
Efficiency:95％～97％
Net Weight:0.26Kg
Dimension:188×93×55mm
Model: MPPT 15 Amp Solar charge controller
Rated Voltage DC: 12V / 24V
Max Current:15A
Zero Loaded Losses:≤45mA/12V / 24V
Full Charge Cut:14V/12V,×2/24V
Efficiency:95％～97％
Net Weight:0.26Kg
Dimension:188×93×55mm
Model: MPPT 20 Amp Solar charge controller
Rated Voltage DC: 12V / 24V /48V
Max Current:20A
Zero Loaded Losses:≤45mA/12V / 24V
Full Charge Cut:14V/12V,×2/24V,×4/48V
Efficiency:95％～97％
Net Weight:0.74Kg
Dimension:188×118×55mm
Model: MPPT 30 Amp
Rated Voltage DC: 12V / 24V /48V
Max Current:30A
Zero Loaded Losses:≤45mA 12V / 24V
Full Charge Cut:14V/12V,×2/24V,×4/48V
Efficiency:95％～97％
Net Weight:0.74Kg
Dimension:188×118×55mm
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