Blog - Battery Monitoring

The GWL/Modular Solution in Action

One of the main advantages of theGWL/Modular solution is that it comes with a complete set of documentation. The goal of this concept is that the product is fully replicable and serviceable at any location of the world by the local skilled electricians.

This is the difference between the Modular –

14.Jan 2021
| Blog - Battery Monitoring

Details of the Emergency Output for CPM1

Pin # 1 - Main Turn-on Impulse- 150 ms pulse to GND

The pin will be connected to GND for 150 ms when the board is powered on, or after the board has been reset (and restarted).

This pin is designed to give an impulse to the bistable relay or to give a power-on impulse to the auxiliary controls

04.Jan 2021
| Blog - Battery Monitoring

The CPM1 Emergency Voltage Levels

The Emergency Voltage levels [U Emergency] are 0.3V bellow theUminand 0.3V above theUmaxlevels. They become active if the voltage of any cells reaches these levels for 30 seconds.

U Emergency (Min)

LFP: 2.5V, 2.6V, 2.7V, 2.8V

LTO: 1.4V, 1.5V, 1.6V, 1.7V

U Emergency (Max)


04.Jan 2021
| Blog - Battery Monitoring

Dogma: The energy of the regular “AA” cells = 1.43Wh

The AA cells are the primary one-time use cells. The nominal voltage ofthe AA cells is 1.5Vand their capacity in Ah usually not stated in the specification.It shows that people are fooled easily. ????

Image: you buy the milk in some box every day, but you never now how much liters or milliliters you actually bu

21.Dec 2020
| Blog - Battery Monitoring

Integration of the GWL/Modular with Victron Energy products

The reference of theshows the possibility of the integration of the GWL/Modular components with theVictron Energy products.

In this installation the CPM1 communicates (by means of auxiliary relays) with theAUX1 and AUX2 of Victron Multiplus, and the

15.Dec 2020
| Blog - Battery Monitoring

GWL/Modular - BMS SC Setup

The basic wiring diagram for the BMS SC setup. In this setup, there is theBCC communication moduleadded to theCPM1. There arethat respond to Umin, Umax, Uemergency and the controlling signal from BCC. There is also a 3-LED status for the condition of

14.Dec 2020
| Blog - Battery Monitoring

GWL/Modular - BMS Simple Setup

The basic wiring diagram for the BMS Simple setup. In this setup there arethat respond to Umin, Umax and Uemergency.

More details can be requested as.

14.Dec 2020
| Blog - Battery Monitoring

GWL/Modular – CPM1 - Auxiliary Relays for High Power...

As seen from the demonstration designs provided by GWL and also from the manual of the, the high-power outputs need to be connected by means of the auxiliary relays.

The auxiliary relaysprovide another layer of protection and disconnectionbetween the battery pack e

14.Dec 2020
| Blog - Battery Monitoring

GWL/Modular BCC - see the web

is an expansion, independent communication extension board designed to be used exclusively. This board expands the battery protection functions and enables remote management of batteries protected by the CPM.

Check the printscreens of the web interface. You can study

08.Dec 2020
| Blog - Battery Monitoring

Avoiding petty risks with home storage

Perhaps a small neglection of the maintenance of an airplane can cause the whole plane to crash. Also, a small negligence can cause somerisky situations concerning the energy storage solution.

See two examples from the photos.

Non-insulated wrench

GWL Team strongly keep remin

30.Nov 2020
| Blog - Battery Monitoring
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