LFP as a starting battery – two concerns
Question: I want to use the LFP battery (4x 3.2V cells) for starting of my car. What SBM should I use to protect the battery?
You cannot use a SBM to protect the starting battery. For starting the car, the current will be very high, hundreds or even nearly 1000 Amps, it is not possible to disconnect such high currents.
WARNING: Additionally it is not possible to disconnect the battery from vehicle circuits. The car electronics may burn or become faulty of the battery is suddenly removed from the circuit, as a result of disconnection, during the operation (when the engine is running)....more >>
1937 Jaguar Electric Vehicle Conversion Lithium LifePO4 Battery
Lithium electric Jaguar conversion by North Valley Systems llc. in Montana. It is using the WINSTON BATTERY 260AH LiFePO4 batteries that contain 25 KW hours of power. Over 100 mile (160 km) range. Top speed is rpm limited by the controller to 103 mph (160kmph). 1000 amp Zilla at 110 vdc gives over 100 KW of potential acceleration power.
The TUE.nl project: LUPO EL
The Lupo EL (“Electric Lightweight”) vehicle combines a very low weight (1,060 kg, 2,337 lbs) with a large battery pack (27 kWh). This results in a range increase of 30% to 50% in comparison to existing electric vehicles with four seats on the market today— 215 km (134 miles) urban and 135 km (84 miles) highway on the Artemis cycle. Despite the presence of a large battery, the interior and cargo space dimensions remain unchanged.
Batteries: Winston Battery/Thunder Sky TS-LFP90AHA, capacity 90 Ah, 3.3V, cycle life > 2000 @ 80% DOD, chemistry: LiFePO4, 91 cells in series, 273 kg, 27 kWh
deSpyder - an EV Porsche Replika with Lithium Power
Check a reference project for a high-power EV using the LiFeYPO4 cells from Winston Battery.
The gardening and the farming is so easy with EVBarrow!
Check some model photos of the EVBarrow.
The technical parameters of EVbarrow
EVBarrow - detailed photos
Check the technical photos of the EVBarrow - electric wheel barrow components: the 12V-inwheel motor and the installation, the electric hand-grip, battery installation under the chasis, details of the mechanical brake switch,
The power of electric induction
A simple mistake: the cable rolled up on a wheel-cable extension cord used to charge an EV. Never forget that even few loops on a cable can cause severe heating by electric induction.
EVBarrow from eCarTec reported by the Süddeutche Zeitung
EVBarrow at the eCarTec show 2012
EVDock at the eCarTec
We were showing the EVDock at the eCarTec 2012 in Munich.
EVDock - promotion
If you are interested to have your own EVDock, be sure to contact us for details. We will send you the special promotion price.
EVBarrow - the details of the frame
The robust frame of the EVBarrow and 12V electric traction motor.
eCarTec 2012 - the real Electric Vehicles at our booth
eCarTec Munich 2012
The GWL/Power had the stand together with the partner companies Faktor and Fleck Machines at the Hall B2, stand 520.
eCarTec 2012 - Day Zero
We have arrived and we made the assembly of the EVDock! It took a lot of time, but we are ready for the show.
Loading the EVDock for the eCarTec show
The EVDock construstion was disassambled and loaded in VW Multivan for transporation to the eCarTec Munich
EVDock system component information
The EVDock consists of 3 main components:
If you wish to get more details about the EVDock, check with us by email or over web.
GWL/Power Electromobility October 2012
The electromobility in a daily use: every day we drive 200 to 350 km in electric cars. We power the cars by the electricity that we produce locally from solar panels. No need to pay for the gasoline, no need to worry about the price of the petrol in the future.
The EVDock design
… from an idea to a real product…
Introducing the EVDock Solar CarPort
The EVDock is 100% wooden CarPort to shield the car and protect it against direct sunshine, rain, snow, etc. It is designed as a self-construction kit that can be assembled by two people just in a few hours.
The roof can be made of solar panels so that the solar energy is harvested directly.
Keep in touch with us more more details on this exciting project.
The EVKart project reference
The technical university in Pilsen has been working on a EVKart project of a fully electric racing go-kart. It can reach up to 160 km/h without any noise, smell and dirty emissions.
BOmobil - an EV project by Hochschule Bochum
Check some details of a reference project using the LiFePO4 technology. See more photos on this page.
Plug-in Hybrid Refuse Collection Vehicle
GWL/Power has supplied LiFePO4 Cells and the complete RT-BMS system to be used in France by SEMAT Company - ZOELLER Group, for their Plug-in Hybrid RCV (Refuse Collection Vehicle) with the Electrical Zoeller Lifter “E-Rotary”, on the PREMIUM “HYBRIS TECH” Chassis made by RENAULT TRUCKS. This hybrid RCV was presented at the “IAA” HANOVER 2012.
GridFree - direct solar charging from FV power supplies
The GridFree technology allows to harvest solar energy directly and simultaniously with the AC grid. The GridFree FV power generation reduces the comsumption of the electric power from the grid. Check with us for more details on this exciting technology.
An electric car using the LFP batteries for the traction.
OSCar eO - The first EV car racing the DAKAR rally!
Using 160 cells of 100Ah from Winston drove 8400 km in the 2012 Dakar rally. Check more here - http://driveeo.com/
Customer EV project: Fiat 500 R from 1973 from I.C.E to electricity
LFP 200AH and RT-BMS installation in Opel Corsa EV convertion
Check the reference photo supplied by our customer. You can see the installation of 200AH LFP cells and the RT-BMS system. Note the size of the cooler for the CBU modules (10A High Power variant is used)
Solar Powered Car from China
EVTraxer - the standard wiring diagram
See the standard wiring diagram of the EV platform EVTraxer. Of cause you can make modifications of the design as needed. This is the great advantage of the EVTraxer platform: you can modify the vehicle to fit your needs.
Thank you for visiting us at the eCarTec 2011
We thank all our customers who came to visit our booth at eCarTec 2011 in Munich. Our exhibition booth was at A6, stand 603. Check some of the photos at the GWL Power on the exhibition eCarTec 2011 gallery.
The DC motor setup
Agni DC motor + Evnetics Soliton Jr installed for the eCarTec demo setup.
EVKart - racing with batteries
…. our racing partners continue to tune-up the electric Kart to get the best performance….
We attended to race named WAVE 2011 in two last weeks.
WAVE is shortcut of the “World Advanced Vehicle Expedition”.
More than twenty electric cars started on Sunday 11th September. They embarked on a long journey over 2,800 kilometers from Paris across 8 countries (France - Belgium - Netherlands - Germany - Switzerland - Liechtenstein - Austria - Czech Republic) and 30 cities. The Vehicles arrived to finish line in Prague on Sunday 25th September.
The Czech Republic Team participated in the race with electric car SuperEl based on Skoda Superb. Which is using our LiFePO4 cells and BMS system.
The main objective of this event was to show that electric cars currently stand in competition with the conventional vehicles with combustion engine and that it is possible with electric car ride over accross the the Europe without problems....more >>
Electric Vehicle Driving and Charging History Log
VW City Stromer 1995 year, with 24 kWh lithium-iron (LiFeYPO4) battery pack
Download the XLS file with the log data at Auto88.cz
I want to replace the lead acid 12V 100Ah stating battery. Which LFP model can I use?
Answer: The performance of the LFP batteries concerning the starting current is excelling the performance of the SLA (lead-acid) batteries. Our tests and the tests of our customers show that the LP12V 40Ah battery can replace any SLA starting battery (even the 100AH, or 150 Ah models). Even big diesel machines can be started from the LFP battery at very cold weather.
For long term use and massive deployment, we suggest to make testing for each application to make sure that the replacement LFP battery will work properly for long time.
WAVE 2011 - The Electric Vehicle Expedition - Paris to Prague
Come and join the 2011 WAVE - the World Advanced Vehicle Expedition!
This exciting event will travel from Paris to Prague this September with a special mission to promote electric mobility running on renewable energy.
GWL Power is a part of the CZECH team in electric model of Skoda Superb.
The new items in our product range - spare parts for motors Agni.
- Agni Brush Holder - Cap set of 8 Brushes + Terminal Plates
- Agni Brush Replacement - set of 8 Brushes
(Both items are supplied separately.)
A cartoon about EV cars
GWL/Power team is using EV cars
Two of our CityStromers that are used on daily bases - both for the ordinary driving and for testing of the EV power solutions.
GWL/Power team ready in Action!
We seldom take photos of ourselves… however here is a rare photo of three members of the GWL/Power team.
EVKart - Electric Racing Cart - another photo
EVKart - Electric Racing Cart
GO-Electro VW Squareback (1969 VW Type3)
Another reference project of one of our customers. (Courtesy of http://www.go-electro.nl/ )
We are installing EV scooters for EV project in Prague
…. more news to follow….
EVTraxer with a “solar roof”
In a summer mid-cloudy day, one standard 220Wp panel provides about 150W of charging power. During a day it can charge up to 1kWh of energy. It is about 10km to 12km of driving range of a light-weight vehicle based on the EVTraxer platform.
The need for simple mobility - EV Tricycle
While the official vehicle manufacturers are ever delaying the coming of the EV vehicles, there are many simple mobility projects that go ahead with the EV solutions. (Link)
Solar charging of the LFP(LYP) batteries
The high powel solar panels are used to harvest the solar evergy into the LFP batteries. A specialized solar charger manages the charging of the battery pack. The solar charging allows to be full independant (off the grid).
EVTraxer platform chargered from solar panels
Our experimetal photo shows the charging of the EVTraxer platform batteries directly from solar power.
We will be publishing our direct solar charging solutions soon. Check our blog for more details later.
EVKart ready for new testing rides
The installation of the EVKart for 72V 60Ah was finished and we are going to make the first test rides.
EVKart installation continues
We plan to have the EVKart V2 running in the beginning of April. More details to follow.
The electric power boat in Croatia
… using the Agni motors and the LFP 200AH cells equipped with RT-BMS.
Photo courtesy of ABA VELA d.o.o., Split, CROATIA
Cooling Akumons using computer fans
(source Fiat Seicento project)
EVKart project - installing 72V/60Ah pack
The 3 pcs of 24V 60AH packs ready for the installation.
EVKart project - installing 72V/60Ah pack
The new improved EVKart project will be using 6 pcs of 12V 60Ah batteries to take the total of 72V/60Ah battery pack. The pack consists of 3 identical 24V/60Ah pack that can be easily changed.
DFM Mini Electric - Conversion to Lithium
The Dong Feng Mini Car (electric version) is being improved with lithium batteries. The original 6 pcs of 12V 150AH lead acid batteries have been replaced with LP 12V 90AH. More information to follow.
FIAT Seicento Elettra - conversion to lithium
Another lithium conversion project using the 12V LP batteries. Fiat 600 Elettra will be converted to full LiFeYPO4 battery traction.
Do you remember your first electric car?
The first car that many people ever drove for the first time in their life was electric. Yes, for many boys or girls the first car they ever drove was the electric “bumper-car” onto an autodrome.
While the big auto-makers have only full mouths of empty promises, the many local EV hobbists make the real electric cars.
The VW CityStromer convertion to lithium (cont).
The whole conversion is nearly done. The battery packs installed, we are getting ready for the first LiFePO4 drive!
The Conversion to Lithium …. (cont)
The front battery-pack tray with the new batteries. The balancing modules already installed and the cabling done.
VW CityStromer - The Conversion to Lithium
This is the empty back battery-pack. The batteries and the battery tray removed.
Say Good-bye to the Lead-Acid Starting batteries!
Get your 12V lithium iron starting battery now. Please check our quote.
Using LiFePO4 batteries as starting batteries for the fuel cars
Q: Can the 12V LFP/LFYP batteries be used as starting batteries for the regular vehicles?
A: Yes. We highly recommend using the LFP/LFYP batteries for starting vehicles. Their performance is much better than the lead-acid batteries.
Q: What are the advantages of the LFP/LFYP batteries?
A: LiFePO4 batteries are able to provide much higher starting current than the lead-acid batteries (SLA). They work even in extreme low temperatures (bellow –35 deg. C). They cannot “get frozen” like SLA batteries. They contain no acids and require no special care. Their life span is 10 years and more, while SLA batteries may last just 4 to 5 years. There are no known disadvantages when using LFP/LFYP batteries....more >>
Toyota Prius Plug-in Conversion using Thundersky cells (http://www.eaa-phev.org/wiki/Prius_PHEV)
This is a photo of the Do-It-Yourself plug-in conversion kit for Toyota Prius. Tha author is Jim Fell, Peterborough, England. (Jim was using the older generiation of the ThunderSky cells - white color.)
Toyota Prius Plug-in Conversion using Thundersky cells (Enginer.us)
This is a photo of the commercially available plug-in conversion kit for Toyota Prius. The battery pack uses ThunderSky cells. (-link-)
Yet another commercially available plug-in conversion kit is available from http://www.pluginsolutions.com/
Toyota Prius Plug-in Conversion using Thundersky cells (Czech)
This is a photo of the experimental Plug-in conversion made in Czech, EU. The battery pack uses 77 pcs of TS-LFP40Ah.
The real driving distances of VW CityStromer using the 80Ah LFP batteries and the 240Ah LFP battery pack
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?
Answer: Unlike 3.2V cells that can hardly be operated without balancing, the 12V LP batteries behave “very sophisticated”, so the need for continuous balancing practically does not exist. It is just enough to check the voltage levels during inspection periods. If you notice a difference in the battery voltage levels, we recommend balancing all batteries manually to the same maximum charging level (ie, max 17 V / per battery)....more >>
Electric Vehicle Technical Report 2009/10/09
Please download the GWL/Power Group Electric Vehicle Technical Report 2009/10/09.
VW Golf 3 CityStromer 240Ah - 218 km per charge
We continue our test rides of the VW Golf CityStromer with 24 pcs of 12V 80Ah lithium batteries. We have reached the new record of 218 km per single charge in real trafic. This distance was reached in the ordinary city trafic in the capital city of Prague. The city driving means a lot of stoping and accelerating at the many crossroads. We hope to reach even larger distance driving on intercity roads without the many crossroads.
VW Golf 3 CityStromer 240Ah installation finished
We have installed 24 pcs of 12V 80Ah lithium batteries in 8-serial 3-parallel
configuration. Total power is based on 96V 240 Ah. The weight of the pack
is 283 kg. This means a saving of 229 kg against the original lead-acid
batteries with 512 kg (16 x 32kg).
The installation is done without any mechanical change to the VW Golf design.
The batteries fit perfectly.
Please read details in the Auto88 discussion forum.
The 23kWh LiFeYPO4 battery pack for VW Golf CityStromer installed! (2)
The front part of the VW Golf CityStromer hosts 6 pcs of the LP 12V 80AH batteries. There is extra space left, that may be used by a high speed charger in the future.
The total installation is made of 24 pcs of the LP 12V 80A cells. 6 pcs in the front battery space, 18 pcs in the back battery space.
The driving distance per single charge? Well, let us see! We are going to post the results here!
The 23kWh LiFeYPO4 battery pack for VW Golf CityStromer installed! (1)
This is the photo of the installation of the 18 pcs of the LP 12V 80AH batteries into the original space in the back of the VW Golf CityStromer. The 18 pcs batteries fit exactly into the space without any need for mechanical changes.
VW CitySTROMer, 1993
The originally manufactured electric model of VW Golf – CityStromer – the most demanded, most advanced EV of its times.
The first pre-production batch was manufactured from 1993 to 1995. The serial production was to start in 1995. However this plan was “revised” and abandoned. Thus only up to 300 EV Golfs were manufactured. However majority of the demonstration units was scrapped after 1995. Thus just about 100 pieces were preserved.
Starting from 2009, the VW Gold has become the most demanded EV again. Using the Lithium Yttrium batteries as the replacement for the original lead-acid, this EV is getting a new dimension of the electric mobility.
Using the lead-acid batteries it could drive up to 90 km per single charge. Using Lithium-Yttrium batteries the single-charge-range exceeds 200 kilometers....more >>
The VW Golf CityStromer with lithoum battery pack. The detail photo of the 8 pcs battery pack. Any questions? Just let us know by email.
The lithium battery installation in the VW Golf CityStromer. For testing purposes 8 pcs of 12V 80Ah lithium batteries are used. Total nominal voltage 96V, total capacity 7.68kWh, total weight 94 kg.
The newly developed EV CitySax is using the LiFeYPO4 technology for the traction battery pack. (86V 160Ah)