GWLG/Team is testing — thermal release from the terminals
The copper bars server as heat conductors. The purpose of the test is to see how the cell will increase the temperature when there is a source of heat applied.
This also serves to test the function of the BMS, to detect and react to the terminal overheating.
BMS 123 is used for these tests.
ELERIX EX-L6C 32700 6 AH cell
The industrial format 32700 LFP cell with 3C support and 6000 mAh.
Get more details form GWLG/Team requesting the VIP support here:
Video: GWL a Intersolar 2023
A brief video memory of the GWL presentation of the AMVOLT product brand at Intersolar 2023.
Digital death? or The big brother? or What?
No way to find out why the YT refuses to connect. This may be a result of some DDoS Attack, that the YT servers decide to block some IP segment.
This condition lasted for about 4 hours and it somehow got restored after some time.
Who is the next? Perhaps you?
GWL: Helping customers to realize their ideas
The icons and symbols on the picture show the various areas of the customer ideas, projects and solutions that GWL has been helping with. From batteries for electric grass-mowers, batteries for electric vehicles, electric bikes, 12V batteries, to large battery projects, electric buses and other solutions for solar and for the EV charging. All of this and many more have been realized by the GWL’s customers.
GWL has been happy to helping customers to realized their DC power related dreams and ideas.
Get in touch with GWL: https://shop.gwl.eu/Contacts/
GWL Team at Intersolar 202 – C2.436
Check the photos of the participation of the GWL Team under the AMVOLT Brand at the EES Europe section of the Intersolar 2023.
BMS Easy Balancing Board
GWL Team is working on a design of the balancing board that will be used for 4 cells and will allow balancing up to 10 Amp.
Check the photos from the testing of the first prototype.
More details to follow, when the product will be verified and made available.
GWL at Intersolar again – C2.436 in hall C2
Since 2012, GWL has been exhibiting at the Intersolar Munich Exhibition. This year (2023) GWL is showing the AMVOLT brand products at the EES Europe section dedicated to battery storage.
Come and meet GWL at stand C2.436 in hall C2.
BMS Easy – an easy way to monitor your cells
The BMS Easy is a single cell protection board for the low voltage and over voltage monitoring of the LFP cells.
It allows the serial connection of multiple cells to get a closed circuit with monitoring of larger packs.
It also provides the parallel connection signal that can be used to report (i.e. feedback) the status of the pack.
The BMS Easy allows for both manual and for remote resetting.
Check more details about the BMS-Easy and see how it may help you in your installations.
The Solar Power System for Your Home – Guide / eBook
What you should know before you order a solar power system for your family home or office. The fourteen questions, answers and a step-by-step guide using a sample installation.
Increase your knowledge by reading the Guide book to understand more about the solar installation step by step.
The topics discussed in the Guide book
- How much electricity will my solar cells produce?
- Production equals savings?
- The efficiency of the solar modules – is it important?
- Does the country-of-origin matter?
- Are Chinese modules and solar tiles of a poor quality?
- What does “SHINGLED, PERC or HALF-CUT” mean?
- How about monocrystalline or polycrystalline?
- What is the key when selecting a solar module then?
- How to install modules and solar tiles on a roof?
- Why is it not possible to connect electrical appliances directly into a solar module?
- The batteries and how to store electrical energy from the solar modules?
- What size of a battery to choose?
- Other ways of storing electricity
- How to keep the electrical energy in balance?
- Calculating ROI in the sample installation
- Conclusion and Summary
The 7 Ways Your LiFePO4 Battery can Move You on! – Guide / eBook
Get the tips for using the LiFePO4 battery to boost your installation performance.
- Your Children Might Grow Up and It’s Still Running
- 4x Cheaper. Save Your Money
- It Won’t Explode
- A BIG, Simple Boost
- Stop Worrying about Charging
- Almost Zero Work
- Save the Forest, Save the Planet
Download the guidebook from this web page.
The Backup of the Critical Infrastructure – Guide / eBook
Reliable backup of critical infrastructure. How to keep your home, office or facility up and running during a power outage.
Is critical infrastructure protected in the event of a power outage? It may come as a surprise – but it isn’t. At least it usually isn’t.
Are you operating a critically vital electrical device in your home? You probably are but “don’t know” about it. There’s a reason why they say one doesn’t realize the importance of something until that something is lost. Most of us have a refrigerator and freezer at home – running on electricity of course.
Learn more about the tips and guiding information for the Backup of Critical Infrastructure.
Hi computer! How old are you? As old as Unix.
Recently, an automated setup using a small Linux board for battery monitoring stopped working. The GWL/Team tried to verify what went wrong. Everything seemed to be working fine and there was not any malfunction of the hardware.
After many hours of investigation, we have found out that the reason for the failure is the new verification procedure for Google services. To continue with the usage of the data on the Google account, the age must be verified. We were wondering how to verify the age of an automated board…
Anyway, for such automated setup, we always set the “birth date” at the beginning of the Unix time: 1/1/1970.
As always, such verifications are making the Freedoms of the Internet world smaller and smaller.
FAQ: What is the Cycle Life Estimation of the Elerix Cells
As given in the datasheet the cycle lifer is specified by the charging and discharging speed, the depth of discharge and the operational temperature.
The typical life span is given at this:
Cycle Life at 80% DOD —- 3000 cycles —- @0.3C/1C, @25°C, >80% SOH
This means that for the charging with 0.3C and discharging with 1C, at the 80% depth of discharge (80% DOD) and the monitored temperature 25°C, the cell will age to 80% of State of Heath (SOH) in 3000 cycles.
The 80% SOH is the typical “end of life value” for the LiFePO4 technology, meaning that the nominal capacity of the cell will drop from the original 100% to 80%.
In this scenario the cycle takes following time: discharge 80% at 1C - about 50 minutes, rest time 1 hour, charge at 0.3C – about 3 hours, rest time 1 hour. Total time per cycle is 5 hours.
With some time-reduction on the rest time, it is possible to perform up to 5 cycles in a day. This means that 3000 cycles correspond to 600 days of continued cycling. This is about 1.6 years.
ESS Cycle Life at 60% DOD —- 6000 cycles —- @0.3C/0.3C, @25°C, >60% SOH
The ESS cycle life is given at 0.3C charging and 0.3 discharging at the 60% depth of discharge (60% DOD) and the monitored temperature 25°C. This corresponds to a typical usage in energy storage applications (ESS).
In this scenario, two cycles per day are calculated as the typical performance. With this number of cycles, the life span of 6000 cycles corresponds to 3000 days of continued cycling. This is more than 8.2 years of the continued usage.
The above graph show some possible scenarios of the life spans for the typical ELERIX products in various modes of operation.
Please take note that the crucial condition for the long-time operation is the contact temperature of the cells, and the limiting of the current peaks to the maximal continued values.
For more support on ELERIX products, be sure to get in touch with the GWL Team.
