Repair/rebalancing of battery packs
Are you suffering from limited range in your Nissan Leaf? Has it started to affect how usable the car is? Want to do something about it? Get in touch for a free estimate.
Individual cell failures are thankfully quite rare. 24kWh Leafs often degrade linearly over time. For these cars, a newer/upgraded battery makes more economical sense compared to the labour intensive process of replacing modules in the current one. However, 30kWh packs can get severely imbalanced over time. The rear stack usually degrades faster than the rest of the battery pack, probably due to heat. For these packs, replacing the degraded cells will restore the car completely. More information on this phenomena can be found here: EVs Enhanced - 30kWh cell failures
Re-pairing of battery packs
Changing the main battery pack in a Nissan Leaf to another one results in the error code P3102, which cause turtle mode with reduced engine power (limp-mode). This is because the cars control system is coded to the battery management system, and these two needs to be re-paired after a battery swap has been performed for the car to function normally.
This service has in the past only been available at Nissan dealerships, but now Dala´s EV Repair can offer this re-pairing service as well. This is achieved with the help of ‘EVs Enhanced HV Battery Pairing Tool’. We use this tool in-house when we do batteryswaps/upgrades, but can also offer this as a separate service for DIY people that would rather tinker with the battery themselves. Get in touch if you are in need of this service!
Battery upgrades for the Nissan Leaf
Are you in need of more range from a single charge? Do you want to keep your electric car on the road longer? Do you want to increase the value of your EV? You’re in luck! A battery upgrade might just be the thing for you! Dala´s EV Repair is working hard on offering affordable battery upgrades for the 2011-2017 Nissan Leaf. There are currently two ways of performing a battery upgrade. The first way to upgrade has been around for some time but is getting perfected now in 2019.
The ‘Bruteforce’ method relies on putting newer cells into the old battery and re-using everything related to the battery management system. The positives of this swap is that it never causes any pairing issues, and you can upgrade to either 30 or 40kWh modules. The downside is that this takes a few hours longer to swap everything out, and when everything is up and running the instrument cluster will show an incorrect range estimation. To fix this, we are using Muxsan’s CAN-bridge to modify key messages that are responsible of showing the correct range and state of charge. (NOTE: CAN bridge is still not 100% ready for release)
The “Clean” method to upgrade is much quicker. This method relies on a CAN-bridge to translate the newer battery pack data to a readable format for the car. There are currently a few suppliers that offer some form of this clean upgrade functionality, but they all have specific use-cases. Here are a few examples.
- EVs Enhanced Battery Translator: Can upgrade 2013-2015 AZE0-0, AZE0-1 to 30kWh. 40kWh not supported yet.
- Véhicules électriques Simon André: Canadian company that sells a CAN-gateway, can upgrade only 2011-2012 ZE0 to 40kWh. 1200€ listed cost for hardware.
- Muxsan CAN bridge: Used to correct instrumentation displayed on the dashboard for Bruteforce upgrades. Progress is being made for this device to also offer clean 40kWh upgrade capabilites into ZE0 and AZE0.
Since there is still not yet a silver bullet that works on all Leaf generations, your Leaf upgrade plan will have to be tailored accordingly. For example, you have a 2013 AZE0-0 Leaf that you want to upgrade to 30kWh. For this model, the EVs Enhanced CAN-gateway is the best option. Another example would be to upgrade a 2015 AZE0-1 to 40kWh. Then the only option is a bruteforce upgrade, fixing the instrumentation with a Muxsan CAN-bridge. The price will vary slightly depending on your starting point, here are some estimates:
- 24kWh->30kWh, 5500€
- 24kWh->40kWh, ~7500€ (Not performed yet!)
- 30kWh->40kWh, ~4500€ (Not performed yet!)
As previously pointed out, please get in touch for a more correct estimate for your specific situation.
Lithium cells for sale
Are you in need of big lithium cells? Maybe complement a solar powerplant with a 10kWh battery? Used EV batteries are perfect for stationary installs. Get in touch for an offer! Selection changes constantly, here are some example prices.
80% State of health batteries, from a Nissan Leaf
- One 500Wh module, 100€/piece
- 10x 500Wh modules, 90€/piece
- 20x 500Wh modules, 80€/piece
Reduction gear oil change
You might not have noticed, but the Nissan Leaf has a tiny amount of oil in it! The reduction gear that translates power to the driveshafts is filled with ATF ‘Matic S’ fluid. This fluid generally lasts a very long time, but it might be beneficial to change it. By instead opting for a high-quality fluid, like Redline D6, you can lower the friction losses especially in cold climates. On a range limited EV, a few percentages lower losses can even result in a few kilometers of extra range!
Checking this oil is in the service manual every 24k km. (2011-2015 Leaf) Replace it yourself, or have us do it for you? Get in touch!
Aeromod#1: Modular grille-block off plates
Our first own product! Did you know you can squeeze out more range from your Leaf by improving its aerodynamic property? Gone are the days of using tape to aeromod your Leaf, instead use our 3d-printed, easily removable and modular grille block off plates. The front air intake on a Leaf is dimensioned to function in all climates from -40°C to +40°C, but here in Scandinavia you’ll never really need that much cooling. There is no drawback to closing it up, and if a +40°C heatwave strikes, the kit is modular, and a middle section can be removed.
Support Dala´s EV Repair by purchasing a kit today (Black, printed in PETG material), or if you want to 3d-print them yourself we have the .STL files below
Leaf Battery to OBD2 cable
Here's something for the tinkerer! If you want to check the health status of a Leaf battery pack (maybe before buying one?) you need some way to connect to it. Gone are the days of searching high and low for a suitable connector, just grab our .STL file and 3d-print one!
This initial release supports 2013-2019 styled connectors. 2011-2012 design coming soon!
Check the link below for detailed instructions, schematics and a download link to the .STL file!
I'm Daniel and the founder of Dala´s EV Repair. The garage is currently situated in Vaasa, Finland. If you have any questions you can contact me using the form below.
NOTE: I am on a business trip for between 15.10 -> 15.11, and will only read mail sporadically!
You can also check out more about us on our social media channels:
I am a huge fan of EVs. I truly believe this is the future for all types of transportation. I started Dala's EV Repair in 2019 when I found out just how expensive lithium battery replacements were. I was also not pleased with the locked down ecosystems all carmakers have when it comes to battery replacements. This prevents third-party shops from fixing cars up for a low cost. Having only expensive battery replacements will scare off potential EV-adopters, and even make people treat cars with a bad battery as disposable! Dala's EV Repair aims to correct this and even offer battery upgrades, which makes old EVs as desirable as new long range ones.