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Our 10 years of Lithium Iron Phosphate experience shared within thousands of articles, hundrends of tests and examples.


A combined Energy solution - Alfons container

Alfons solution Alfons container

Alfons container Alfons container

A combined Energy Solution - Alfons Container

GWL/Power supplied the Winston Battery cells for the integrated hybrid energy solution called “Container Alfons”.  This solution integrates the energy from three sources - solar, wind and a backup diesel generator.

Be sure to contact GWL/Power for more details and for the reference to this and similar projects. 

New current measuring options for LAN Controller


New extension accessory current sensor for LAN Controller 2.0 is available for your projects - LAN-MOD-CS709. It allows to measure up to +/- 75A in circuits up to 277V AC/DC. Check our offer of LAN Controller extension sensors. Follow the pictures for complete installation and setup instructions.

The GridFree inverters for the energy solutions


The GridFree inverters for the energy solutions

The 1000W and 2000W GridFree Smart inverters for energy self-generation. 

How to connect solar panels a bateries to the solar regulator

Please note you have to always connect the batteries first to the solar regulator then the solar panels and load.

The solar regulator should be demaged If you connect the solar panels before the bateries.

Switch off the solar panels first, Load after and the batteries as last if you need to disconnect the solar regulator from the whole system.

A solar powered ebike - possible?


A solar powered ebike - possible?

I wish to make an ebike powered by solar panels in the wheel. What do you think about this?

It is a nice idea. We are always happy when our customers bring about some innovative ideas.

For the solar panels in the wheel (as suggested by the picture) we come to this calculation:

  • Taking the size of the rim 26", the diameter is 66 cm, making the flat area of the wheel some 0.34m2.
  • If you happen to fill this area with 60% by solar cells, you will get some 0.20m2 of solar panel flat space.
  • The regular solar panel is 1m x 1.6m making some 1.6m2 of the flat area. Such panels have typically about 260Wp of solar power rating. With 0.20m2 of the wheel, you will get the solar power rating of some 32Wp.
  •    ...more >>

A simple off-grid installation (customer photo)



A simple off-grid installation (customer photo)

Making a solar installation is easy. Just 4 components needed: 1) solar panel(s), 2) the solar charge regulator, 3) the battery and the DC/AC inverter. 

GWL/Power has supplied the solar panels and the LS1024E PWM regulator.

What is correct:  the panels (80Wp small size panels) have the MPPT voltage approx 10V, this means two panels must be in series to get the voltage above the battery voltage (some 15V at max charge).

What is wrong: 1) there is no DC fuse on the battery…. whoops …. always use fusing!  2)shame on the shading: the panels are shaded by the solar cables and also by the battery. This is simply wrong…. the panels will not provide full power potential. Always avoid shading of the panels.

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Tracer Remote Monitor MT-50


Tracer Remote Monitor MT-50

Check details on-line 

Tracer BN connection solution


Tracer BN connection solution

GWL/Power Status display for Solar MPPT Tracer BN (MT50)

GWL/Power Solar Controller Monitor for Tracer BN series (RS-485/USB)


Tracer BN MPPT Series


Tracer BN MPPT Series

Tracer1215BN, 10A, 12/24V 
Tracer2215BN, 20A,12/24V 
Tracer3215BN, 30A,12/24V 
Tracer4215BN, 40A,12/24V 

Check Tracer BN product on-line.

Solar powered Raspberry Pi

Raspberry Pi (RPI) is a successful piece of hardware and it is often used in industrial applications. But what to do if you need to use it in a place without a connection to the power source?

The solution is the possibility to power it by solar panel RPI!


RPI is powered via 5V microUSB, which is in many cases advantageous. But there is a problem with smaller solar panels because of their typical nominal voltage of 12V. To change the voltage with a DC-DC convertor is not a suitable solution either because of power loss. There are small solar panels, but their performance is obviously too small.

RPI has to be powered at least with a source of 700 mA 5V ie with some reserves it is possible to count with the consumption of 5W without other associated peripherals. The connection of the 5Wp solar panel is not sufficient, since it is its maximum performance in ideal conditions and with a cloudy sky the panel powered like this will have output only 0.5W. You must also have enough power to recharge the battery during the day to cover consumption overnight.

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