The answer depends on the type of application. See some examples.
1. Simple installations
Simple installations with one battery (12V) or with just a few cells do not need any special inspections. If you have a SMB to handle the protection of the pack, you can just monitor the voltage level. This kind of pack should be inspected once or two times in a year. Or perhaps each time after a longer pause in usage. Note: do not forget to disconnect all electronics if not using the pack. The pack should have a dual protection, as explained here.
2. Advanced installations
More advanced installations (typically with 8 cells and more) should be monitored regularly. It is recommended that the inspection of the pack is performed in these intervals (ie, after number of discharge / charge cycles):...more >>
GWL/Power has organized a specialized seminar for the LiFePO4 battery technology. See the photos from The Sinopoly Battery Technology Training Seminar on 9th of March.
he EVMosquit is a hybrid between an electric bike and scooter! Enjoy the comfort of the electric bike with the speed of the electric scooter.
We will be showing the EVMosquit at InterSolar 2017. Come to check with us at Intersolar 2017: Hall B2, Booth 459.
If you want more details about EVMosquit now, please contact our technical department.
Question: I need a 100V DC pack. How many cells do I need (for LFP or for LTO)?
Answer: The above table shows the various configurations of the number of the cells and the voltage levels that will be reached with the configuration.
FAQ: Determining the size of cells based on current and operation time
Question: I need a battery pack to supply 60 Amp continuously for 8 hours. What size of the battery do you recommend?
Answer: The above table shows the size of the battery packs (in Ah) based on the 100% DOD (depth of discharge) and 80% DOD.
The 80% DOD cycle is typically used according to the specification of the manufacturer to reach the optimal life span (cycle life) of the battery pack.
For a pack running for 8 hours at 60 Amp, at 80% DOD, the capacity of the cells should be at least 600Ah.
For 8+ years, GWL/Power’s main focus is on the large industrial prismatic cells for energy storage, traction systems and all purpose applications.
Together with our key supplier Thudersky Winston Battery, we were promoting the large capacity cells from 40AH to 1000AH.
Did you not have chance to get more details at InterSolar? Do you wish to know more? Be sure to contact us for more technical details, projects applications and solutions.
GWL/Power has been promoting the small size cells ZG 20 AH and 60AH.
These cells are suitable for high power applications with continuous currents of 3C to 5C.
Be sure to follow with us for more details on the application of these cells.
Example of the Winston Battery application. A 24V battery pack for telecom offgrid applications…. as visible at InterSolar (at a partner booth)
The photos of the GWL/Power booth at Hall B2, Booth 459. Together with our main partner ThunderSky Winston Battery, we have setup the booth in our favorite design. We have been using this design for last 3 years (2015, 2016, and now 2017).
We thank to all of our customers, partners, old and new friends to come to our booth.
We are happy to be available to realize your DC power related projects.
The GridFree inverters for the energy solutions
The 1000W and 2000W GridFree Smart inverters for energy self-generation.
The large capacity Winston cells 700AH, 1000AH are equipped with multiple terminals. All terminals are mutually connected and there is no difference between them.
The terminals of the small cells like 40AH, 60AH, 100AH, 160AH can be used for continuous loads with rating up to 100 Amp currents. The larger terminals of the 200AH cells to 400AH cells can withstand some 300 to 400 Amp currents.
Please note that for high power applications with currents above 100Amp (continuous) the cabling and connector mounting must be realized in a very precise way with corresponding load rating.
For high power applications, with continuous load demands, it is recommended to use multiple terminals. This is the purpose of the multiple terminals on the large 700AH and 1000AH cells.
In simple words: if you have continuous power rating more than 100 Amp, we always suggest using the multiple terminals.
We kindly remind the customers of the need to be very careful about some types of internet frauds related to payments and refunds.
In recent months GWL/Power has experienced some kind of attacks. Some hackers pretended to be the sales person of GWL and asked the customer to change the payment information to another account. The hackers compromised the email account and sent faked emails and created faked modified order confirmations with a fake bank account.
We kindly ask all of our customers to take note of these illegal activities. In case there is any change in payment details, it is always better to wait, resend the copy to more employees of GWL/Power and verify by phone, Skype or some other channels.
When making the payment, always verify the payment details as published on our web pages....more >>
GWL/Power is offering a variety of LTO technology based cells that allow to assemble the battery packs for special applications:
Be sure to contact the GWL/Power team with your demands for details on the LTO solution.
Check the basic specifications and dimensions of the LTO cells now available for your projects.
We will be happy to supply these cells for your packs. Be sure to let us know what you need.
The diagrams show the test results of the specifications of the LTO cells.
We will be happy to provide these cells for your applications.
The innovative LTO cells allow a simple and easy assembly into the packs. As a result any company or individual with basic skills in electronics is now able to produce the battery packs with excellent performance. There is no need to use the welding machines to fix the contact terminals to the cells.
The LTO cells have the outstanding energy performance and mechanical safety.
The LTO cells bring the energy solutions into a new level.
The team of GWL/Power will be happy to assist you in your projects.
The world of the LTO technology
The 2.4V high performance cells for your packs and battery applications.