Protect your CBM1 against a...

GWL has supplied more than 30 000 pcs of the. Based on the user experience, we have found out that some customers have damaged the board when soldering the wires to the battery contact terminals.

There isa high risk of overheating of the componentsespecially near the (B-) termina

10.Aug 2020
| Blog

GWL/Modular Battery Link

Installation wiring for theproduct.

The GWL/Team makes your life easy.

10.Aug 2020
| Blog

GWL/Modular - BCC (Battery...


  • The BCC is a communication module working with GWL/Modular CPM1. It provided additional functions of the protection and management for the battery modules monitored by the CPM1.
  • The basic hardware of the module contains:1x LAN port 100/10 Mbpsfor connection to PC networ
  • 10.Aug 2020
    | Blog

Say No! – The active...

GWL/Team has spent many months testing the active balancers from China. In general, we have found following reasons why to “Say No!” to these products.

1) The risk of a products failure– Low Reliability Several of the balancers simply failed after some time. They either stopped working out of a sudden or

10.Aug 2020
| Blog

Say No! – The Energy Storage...

This photo shows the internal design of the energy storage black box from a Chinese supplier.

The battery pack consists of75 cylindrical cells welded togetherinto a fixed pack. This pack is stuffed into the 19” PC rack. See for yourself.

Clearly visible issues

  • Undocumented type of cel
10.Aug 2020
| Blog

The Death of a Battery Hero

This is the memorial of the oldest battery (as of 8/2020) from the, that we were able to trace back.This battery was produced in 8/2007.

As seen from the photos, the battery served for many years (10+ years) and would keep serving even longer. However, an accident made the end of the life fo

10.Aug 2020
| Blog

GWL in Action: Making the...

In 1950 the cities in the US got rid of their electric street cars systems. The photo from a tweet shows thePacific street carswaiting for the destruction in 1956. The same story was in Prague. There was a functional trolley-bus system operatingfrom 1936 till 1972. It was discarded in favor of gasoline bu

10.Aug 2020
| Blog

STORY n.2 about Solar energy...

In July 2019, we received a request to the installation of Solar energy storage 48V 5.4kWh.

It was a complete solution of a photovoltaic power plant for the customer, which was implemented by the assembly company SW-power. After consultation with the company's executive Mr. Coufal, we came up with a

06.Aug 2020
| Blog

GWL keeps saying: Say...

Some time ago GWL/Team purchased. Recently we have decided to use the hardware again. Very quickly we have come to realize it isa piece of “dead hardware”. Why?

Because the remote monitoring function was fixed at the operation of the“My Current Cost

03.Aug 2020
| Blog

The Price Development of the...

The graph shows the price and size development of the60 cell Poly solar panels from 2013 to 2020.

  • The price of typical solar panel [red line]: in 2013/6#1)the most sold size was 240Wp with average price of $195, in 2020/6 the average size is 280Wp and the average price is $79.
  • Size increase [blue bars]: the size
  • 30.Jul 2020
    | Blog
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