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14. Sep 2009
 
Winston 12V dimmensions

LFP 12V 20Ah battery dimensions
LFP 12V 40Ah battery dimensions
LFP 12V 80Ah battery dimensions
LFP 12V 100Ah battery dimensions

 

High voltage lithium yttrium iron LiFePO4/LiFeYPO4 batteries. Please see the dimensions of these high power traction batteries.


22.Mar 2019
 
Latest articles

    16.Mar 2019
     
    ". "Raspberry Pi BMS communication module

    Blog EVPower
    Do you need to know how much capacity remains in your battery? Stay tuned - during Q3/2019 we will announce a communication module based on Raspberry project. Together with our CPM1 board, it will bring you information about SoC and DoD of any battery pack from 4 to 16 LiFePO4 cells. It will allow reading this information via touch screen or TCP/IP (ethernet).

    04.Mar 2019
     
    ". "Winston cells passed the China Army military safety tests

    Blog EVPower
    The photo shows the punch-through simulating a shooting from 45 mm calibre anti-tank gun. Fully charged cells are punched through simulating the shoot-through from a military weapon. The purpose of the test is to see the safety and stability of the lithium cells. As visible from the photo, the cells remained complete, did not burn, did not set on fire and did not explode. This kind of extreme abuse proved that superiority of the Winston Battery lithium cells. These cells are suitable for all kinds of applications including the heavy duty and military grade installations.

    28.Feb 2019
     
    ". "What is the Peukert’s Exponent for LiFePO4 cells?

    Blog EVPower
    The is used for the lead-acid batteries. Simply said this exponent is the ratio between the charging and discharging of a battery. It means how much energy you need to charge compared to the energy you get when discharging. For the LiFePO4 cells, the efficiency of the charge and discharge rate is very high – above 97% and more. That is why the Peukert’s Exponent is close to 1.00. The battery producers do not give this value because it is not necessary for the LiFePO4 cells. You can find that consider using the value between 1.01 to 1.03 for different models of the LiFePO4 cells. If you need additional support, don't hesitate to ask the for help. We will always try to find the best solution for you.
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    28.Feb 2019
     
    ". "Q&A: BMS123 Auto replacement parts

    Blog EVPower
    Question: I have the old version of BMS123 Auto and I need a replacement board. Can you help me? Answer: Yes! The solution is simple. The OUT and IN boards of the BMS123 Smart are backwards compatible with the previous version of BMS123 Auto. For the OUT-board you can just use the BMS123smart cell board without modifications. For the IN-board, you need to make a small hardware modification of the BMS123smart cell board. You just simply cut a piece of the PCB foil. Next to the (-) minus sign on the cell board, there are two golden dots. You need to cut the connection between these two dots. You can scratch the foil by means of a sharp knife or a screwdriver. If you need any additional assistance with the or Auto, please let us know. The is here for you.
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    20.Jan 2019
     
    ". "How to calculate the cost of stored energy in a LiFePO4 cell?

    Blog EVPower
    Lead Acid or LiFePO4? This is the price per kWh stored and cycle life comparison. The two following graphs will show you the comparison between the Lead Acid and LiFePO4 batteries. The first one compares the average number of cycles (cycle life) according to the battery type and a depth of discharge. The second graph applies these figures to calculate the cost for one kWh of energy stored – again according to the battery type and the depth of discharge. If you wonder how we got these figures or even would like to calculate the costs for a kWh stored for your own battery storage system, follow the steps below the graphs. How did we get these numbers? Plus some basic terms definitions > A 300Ah battery costs around 330€ > It has a voltage of 3.2V. The battery capacity in kWh is then:3.2 * 300 = 960 Wh = 0.96 kWh ~ 1 kWh > Because we want to gain the longest possible battery durability, we will use it only for 50% of the capacity (this is so-called 50% DoD – depth of discharge). The usable battery capacity is therefore 0.5 kWh.
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    20.Jul 2018
     
    ". "Sailing Yacht with a 12V/200AH battery bank

    Blog EVPower
    A reference project for a battery bank on a sailing yacht using the 4x WB-LFP200AH cells for the board battery and the BMS123 Smart. The battery pack is charged from the on-board AC/DC charger (35 Amp) and the generator (up to 80 Amp).
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    20.Jul 2018
     
    ". "Low priced cells on the market

    Blog EVPower
    Low priced cells on the market Question: We have received a quote for a battery pack from a Chinese supplier. The quote is considerably lower than the price of the LFP cells on the market in Europe. Why is this so? Answer: Yes, the pricing that is available from some suppliers in China is astonishingly low. Some offer only price as low as $0.50 to $0.60 per Ah. Of cause this “low” price creates a suspicion about the quality of the products. We suggest customers should review these questions: What is the original of the cells used in the pack? Are they new cells? Or are they some cells that were recalled from some projects and are now resold “as new”? Can you verify the production date of the cells? What is the brand and the specification of the cells used in the pack? What are the references of these products? How long has this type of the cells been on the market and what is the real customer experience?
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    16.Feb 2018
     
    ". "3.2V LFP cell initial charging

    Question: How should new cells 3.2V 40AH, 60AH, 90AH, 100 AH, etc. be formed before first usage? Answer: The new 3.2V LFP cells delivered from the warehouse are partially charged. However before the first use, it is essential to charge each cell to full capacity. The initial charging should be done with the charging current set to less than 1C (typically 0.5C), till the voltage level of 4.0 V is reached. There is no other need for LFP 3.2V cells to be formatted or otherwise specially prepared for the use. After the first charge to full, the cell is ready to be used for use. The above charging rule is also applied to the initial charge after the cell has been unused or stored for a long time. If not used more than 1 month, it is recommended to make again an initial charge to full.
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    16.Feb 2018
     
    ". "12V LP battery balancing and charging

    Question: Can I charge the 12V LFP battery using a conventional auto-moto charger 12V? Answer: With most of “cheap” car battery chargers you **cannot** charge the 12V LFP battery. Cheap chargers often end charging at 14V. As a result the LFP batteries are not charged sufficiently. In order to charge to full you need to reach above 16V. If you have an “advanced” manageable charger, it can be used provided you can set the charge level to at least 16V. Simply said: you can charge with any kind of charger if you make sure that the battery voltage reaches at least 16V, but does not exceed the maximum limit of 17V. Question: What are the experiences of balancing 12V batteries, when, for example, four pieces of 12V/40Ah in the series?
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    16.Feb 2018
     
    ". "You must charge the LiFePO4 before the first use!

    Blog EVPower
    You must charge before the first use! We remind all users of the LFP cells and LP batteries that the cells and batteries MUST be charged to full voltage level BEFORE assembling into a pack and before starting to be used. For the 3.2V cells, the full charge voltage level is 4.00V and the charging is . For the 12V LP batteries the full charge voltage level is 16.00V. More details about .
    eukert’s Exponent
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    escribed here
    he use of 12V batteries is here
       ...more >>
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