Balancing of an Enerdel Think battery pack after water damage
October 04, 2020
This battery pack got water - apparently they use a lot of salt on the roads in Norway and this makes the battery packs rust. And the rust lets water in... then it condensates, and then it destroys...
EV socks... hand knitted...
July 28, 2020
This is highly non-technical post. My mom decided to knit EV socks for me... and here are two samples...
Efficiency Hydrogen vs Electric
July 13, 2020
I have been asked many times about the difference in efficiency between battery EV and hydrogen fuel cell cars and every time I have to go look for illustration. I found this just recently here:...
Long drive range on a Think City with Enerdel Lithium battery pack
June 04, 2020
I had to travel 75km one way and decided that this was an excellent opportunity to make a non scientific test of the range of my Think City. The result was almost 147km from fully charged down to...
Zebra battery profiling revisited
December 09, 2019
Another car with one dead cell profiled: The 366.34 is illustrative for the theoretical open circuit voltage of the battery and is couple of volts lower than the other post I did some year ago......
First ever burnout made with RAV4 EV?
September 23, 2019
Last night I was finally ready with the conversion of my RAV4 EV to a lithium. The first order of business was to see how handling and performance are affected by the lighter pack. And wow! 300kg...
Faster charging for Think with Enerdel pack
August 16, 2019
I made a short test with temporarily mounted eltek charger, and managed to almost triple the charge current. See the indication with and without the additional charger. Only the standard charger:...
How to reformat sd card to make it readable on an palm
June 12, 2019
Here is a short video detailing the process of converting an SD card to a smaller capacity and make it readable in an Palm m505 or m515, so you can use it with the ev monitor and ev manager programs....
Untitled
May 29, 2019
I had a chance to log the messages that the BMS in a Think A206 is sending on the RS485 bus to the charger. Here is a screenshot. 10400 baud, 7 bits, Messages every second. 3 messages per pack. Is...
SIADIS diagnostic connector on a Think A306
May 23, 2019
Think City with Gen 1 PCU have a very strange and hard to find connector. The connector is hanging freely above the passenger foot well. I replace these with another connector that is usually used on...
Change of wheel bearing on a Think City EV (A306)
May 06, 2019
I had to replace front wheel bearings on one Think. So here is a collection of photos mostly for my own use showing some parts of the process.
EVSE Checker for uppladdning.nu
March 24, 2019
Uppladdning.nu is a platform for charging infrastructure (mostly used in the Nordic countries), and one of the questions that often come up is what is the maximum available power from a particular...
RAV4 EV with 222 000 miles (357 000km) on the odometer for sale in CA
March 04, 2019
I just saw this add for a RAV4 EV and could not hold myself. Look at the photo of the odometer: https://sfbay.craigslist.org/sby/cto/d/santa-clara-2002-rav-4-ev-100-electric/6832824590.html 222000...
Air evacuation of the heating system of a Think A306 with liquid heater
February 05, 2019
I found an old receipt showing all the stuff I bought to build a T-link for air evacuation of the heating system of a Think A306. I will try to find a photo of the result and publish it. Here are...
BMI flashing box for Zebra battery
February 05, 2019
This is the wiring diagram of a BMI flashing box.
Clean up of another RAV4 EV battery pack
January 27, 2019
Some time ago I took part in cleaning of a battery pack of a RAV4 EV that was producing the leak detection error and refused to charge. The battery pack was very dirty and the aluminium pop-nits were...
Test drive of Tesla Model 3 in Malmö, Sweden
January 27, 2019
So here it is... the Tesla Model 3 is in Sweden... ... but with registration tags from the Netherlands.. Here in Malmö, Sweden. The car was the Dual Motor Long Range Performance version. The car is a...
DIY charging power meter for Type 2 charging
December 20, 2018
Lars made a very cool charging power meter and allowed med publish some info and photos. It is all in Swedish - feel free to use google translate. ## Användning Mäter bara på FAS 1 och två lampor...
Clean up a battery pack from RAV4 EV
October 08, 2018
The following post is trying to document and describe how I clean my RAV4 EV battery packs when I get isolation error. Dirty pack .jpg) Dirty battery module and a tooth brush So the cleaning is very...
And another install of Nikometer in a Think A306
August 27, 2018
Here is one more Nikometer installation published with permission from here: I would like to share my Nikometer installation as it can inspire...
Think A306 Battery Box
July 09, 2018
To asses the possibility to replace a Think A306 Zebra battery with something else I took some measurement and ended up with this: So the usable volume is about 30x92x69 cm. The dimensions of Nissan...
Replace EV95 modules in RAV4 EV
July 06, 2018
Since the LEV50-8 modules used in Mitsubishi Miev are exactly the same dimensions it will make it mechanically very easy to replace the EV95 NiMH modules. The challenge is the integration to the...
Mitsubishi Miev Pack Details - CMU connectors
July 05, 2018
The connectors to the CMUs look like this: This is a 8 pin connector - link and part numbers further down. The connector has GND (pin 7), 12V (pin 1), CAN-H (pin 8), CAN-L (pin 4) wires. It has two...
Zebra battery profiling
July 04, 2018
A graph showing the voltage vs current for a two drives at different SOC with Zebra battery in a Think A306. It would be nice to be able to produce similar graphs and compare performance. Here is a...
Zebra battery warmup and charge
July 04, 2018
A graph showing the process of warming up a Zebra battery in a Think A306 and initial charge. The graph begins at about 150C. Notable points are: - at about 16th hour and 210C the contactors close...
Mitsubishi Miev Battery Pack
July 03, 2018
I have aquired a battery pack from a crashed Mitsubishi Miev produced 2017. I am planning to use the modules in an old Toyota RAV4 EV produced 1997 with NiMH battery that is no longer produced. The...
Brake light switch on a Think City
May 21, 2018
This is the brake light switch in the Think City A306
State of Charge vs Cell Voltage for an Enerdel Battery
September 12, 2017
So here is a graph to help with finding the SOC of an Enerdel cell by measuring the Open Circuit Voltage of the cell. | | | | --- | --- | | OCV | SOC | | 2,50 | 0% | | 2,73 | 4% | | 3,00 | 15% | |...
Tesla extended the range of some Florida vehicles for drivers to escape Hurricane Irma
September 11, 2017
What a level of commitment to customer service! ``` As Hurricane Irma bears down on...
Number of Hyundai Ioniq registrations in Sweden
August 07, 2017
How to install and setup the Think EV Monitor for the Think A306
August 02, 2017
A copy of a post made on elbilforum that describes the process of setting up you Duinomite to run the Think EV Monitor by HMA here...
Think A306 Range vs Speed (not a test)
June 10, 2017
Some time ago I had to travel 67,3km to another town and I took the Think there. On the way there I drove with 90km/h - relatively calm. Arrived there with SOC 57.6 % and approximately 150Wh/km...
EV95 Modules testing
June 03, 2017
I have been testing some old EV95 modules with my new test setup and noticed something very interesting: the temperature of different points on an EV95 battery module can vary by as much as 21C (70F)...
Enerdel pack voltage variations
April 01, 2017
[UPDATED 2017-April-05 with data at higher SOC] Here are couple of photos of the nikometer with an Enerdel battery pack. There are 3 numbers on the third row. These are the maximum, average and...
Possible placement of CHAdeMO inlet on a Think A306
February 21, 2017
Here are couple of photos of a Think City cars which were converted to run on H2 with fuel cells.
Hack the ground fault ECU on a Toyota RAV4 EV
January 12, 2017
The weather is very humid and that brings some of the older Toyota RAV4 EVs to a halt due to the ground fault.... I usually clean the battery pack and the ground fault disappears. But if I was unable...
Is there such thing as too much information
December 25, 2016
This is a short post to reflect on the value of information, especially when testing batteries. Here is a charging curve on an EV95 battery module. This is a 12V 95Ah module composed of 10 cells. All...
Graph of charging Think A306 with Zebra battery with 16A
October 10, 2016
Some time ago (see here) I made a graph when charging a Think with 10A setting on the charging cable. One surprising thing was that the charging current was very reduced during the heating periods of...
And another install of nikometer on the Think A306
September 19, 2016
Courtesy of the Go-carter on the elbilforum.no... with a 3d printed holder.
Another install of Nikometer in a Think A306
September 05, 2016
Another install of the Nikometer in the new Think by Victor. When olimex started producing the duinomite they were selling a box for it. The box is no longer available and here you can see a very...
New version of Nikometer for Think A306 with Enerdel pack
August 24, 2016
As part of my project to convert a Think A306 with Zebra battery to an Li- Enerdel battery I sat down and finally improved on the nikometer to read and display values from the Enerdel battery that I...
1997 RAV4 EV next to a RAV4 EV from year 2000
July 18, 2016
For the curious of you - here is a RAV4 EV from year 1997 next to a one from year 2000.
RAV4 EV Battery pack issues
July 02, 2016
I have been experiencing very strange issues with a battery pack of a RAV4 EV model 1997. The modules seem to fall in 2 groups. One group (lets call it group LOW) is reporting relatively low module...
Grounding points on Think EV A306 Gen 1
June 16, 2016
There are some reports that some problems with the cars are due to bad connection on the grounding points, so for ease of conversation here is schema of grounding points in a Gen1 Think A306.
Default values in RAV4EV Battery ECU
June 13, 2016
Some time ago there was a discussion about the default values reported from the Battery ECU if there are no values coming from the Battery Sensing ECU. I had an opportunity to test this recently and...
Potted Battery Sensing ECU
June 12, 2016
So I had to replace the Battery Sensing ECU on a RAV4EV and decided to take a look in the broken one. After couple of screws the smooth surface of a potted board was reveled. I was able to get a bit...
Graphing of a charging of Think A306
March 21, 2016
**Edit @2016-04-01: Updated with a corrected graph.** I took this log during a charging from about 35% to full on a Think City A306 with Zebra battery. The battery was relatively new. * I thought...
Thermal images of a Think City A306 with Zebra battery
January 24, 2016
I found myself holding a thermal camera and what better thing to try than see how the Zebra battery affects the temperature in the interior. Keep in mind that the working temperature of the Zebra...
RAV4 EV and Tesla Model S
November 24, 2015
Today I had to pickup someone at the train station and noticed that there was a parking spot next to a Tesla Model S. I am not driving the short version of the RAV4 EV that often and I could not...
CALIX water warmer for Think A306
November 03, 2015
A new version of Think EV Monitor for the A306 with Zebra battery
September 25, 2015
I just uploaded a new version of the Think EV Monitor for the A306 with Zebra battery. It fixes the problem with jumping picture on the display. It is available in the download section under the...
"Crashtesting" of a Think City EV
May 20, 2015
A fellow Think owner had a high speed accident on the highway in Germany. Here is a google translation of what happened and couple of photos of the result. This is quite impressive. ``` Early on...
Video of mounting the inductive to conductive kit
May 10, 2015
Here is a short video showing the mounting of the kit on an inductively charged RAV4EV. YouTube Video
Cut Type 2 plug to be able mate to the plugs on the Type 2 charging stations
May 07, 2015
The following 2 photos show a plug that was originally made for pluging in the Type 2 outlet on the charging box, but was modified (cut) to make it possible to use Type 2 charging boxes that have a...
J1772 (Type 1) inlet placement
April 21, 2015
A progress report: - All control electronics are now neatly packed in a IP67 box. See the box - preliminary held with zip ties, some cooling fins, and testing size and effect of different fans - the...
Control electronics packing
April 09, 2015
After some work I am finally almost happy about the way the control electronics look. Here is a photo of the setup in the box. I still need to figure out base plate, and usage of cables or...
CHAdeMO for the old RAV4 EV
March 26, 2015
While finalizing the mounting of the conductive J1772 charging I decided to see where would be a good place for a CHAdeMO inlet. Here are few photos - One of them shows a CHAdeMO plug plugged in the...
Change of Cabin Filter on a Think City A306
February 14, 2015
I decided I wanted to change the cabin filter on the Think. The cabin filter I removed from the Think was marked as CC1011. A quick google search reviled that this is possibly the same filter as used...
What hardware do you need for Think EV Monitor for the new generation of Thinks
January 11, 2015
Think EV Monitor for the new gen Think is a program written in BASIC that runs on a Duinomite Mega board. The Duinomite Mega is (was?) the only duinomite/maximite that had CAN Bus available. The...
Economy bargraph in Think EV Monitor for the Think City A306
September 05, 2014
I got inspired by the economy display of the Nissan Leaf and added similar economy display for the Think EV Monitor for the new type of the Think (the A306) model. Here is a short video showing the...
Fixing the charging door of a new Think City A306
August 17, 2014
The charging door of this Think has never really worked - even if closed tightly it would get back to being a bit open after a short drive. After some troubleshooting it turned out that the charging...
Think City EV Maintenance Charge and Battery Waterfill
June 14, 2012
Here is a video log of my last maintenance charge and waterfill... YouTube Video YouTube Video YouTube Video The procedure and the form: ...
New version of Think EV Monitor
December 17, 2011
There is a new version of the Think EV Monitor available for download. Apart from some stability improvements, the most important is the checked and confirmed state parameters for both charger and...
New link to palm sync software
November 14, 2011
Following is a new link to the palm desktop software: Use the software to sync prc files to your palm handheld. Note - it does not...
New design
November 05, 2011
Welcome to the new design of www.evmonitor.info. I think it is much cleaner and easier to find info, hope you agree. :)
Energy and Speed
May 01, 2011
A simple explanation I liked by ERG4ALL at the Nissan Leaf forums. ``` ... Energy consumed goes up by the square of the speed. Thus a car traveling 70 mph uses four times the energy of one traveling...
New videos
December 19, 2010
New videos going through some of the functionality in Think EV Monitor and Think EV Manager. YouTube Video YouTube Video YouTube Video
Think EV Manager available for download
November 21, 2010
After a long delay and testing the Think EV Manager program is available for download. In this version the reading of errors from BMS and the Charger is reporting numbers only. Also the test charging...
How does a charge of Think EV (with NiCd batteries) look like?
October 03, 2010
Well, there it is - it is not that often when I charge to 100%, but this time I decided to do it, and the resulting parameters were logged, and then plotted in excel. And here is the result. A bigger...
New version of the Think EV Monitor
June 06, 2010
I just uploaded a new version of the Think EV Monitor. A very exciting new parameter - calculated battery module internal resistance! Also fixes for currents in charge mode, correctly reporting...
71km - stop for food and charge.
May 13, 2010
Drove 71km using 9344Wh => 131.6 Wh/km! 92%-55% =37%SOC used. If we manage to continue to drive this way the theoretical range would be 26kWh battery pack at 131.6Wh/km => 197km!!!
Ready to go soon
May 13, 2010
Starting the trip to EV2010
May 13, 2010
We are starting the trip from Malmö to Trollhättan, in Sweden. Total 370km. We will be driving a RAV4 EV produced in year 2000. Ten years ago!This car still has it's original battery pack with total...
Cable holding contraption
March 13, 2010
I got these two photos showing a contraption made out of a wire hanger. Apparently it should work very well holding the cable and providing secure contact with the palm handheld. I have not tried it...
How does a charge of RAV4 look like?
February 15, 2010
Here it is: Since RAV4 EV Monitor can log the data to a comma separated file, it is easy to open it in excel and plot the data for whatever reason ;-) The log data in excel format is available for...
Error nr.5
January 27, 2010
I have had some reports of "Error nr.5" while using evmonitor and logging data. I went out and bought couple of SD cards trying to reproduce the error, and I think I figured it out.The error occurs...
Untitled
January 01, 2010
Welcome to the evmonitor blog. Here I will post news, problems and advice about evmonitor for both Think and RAV4 electric vehicles.