BYD SEAL's Battery Secrets Revealed with OBD Scanner

[@FlyingBirdFlip]

Got a byd seal right before xmas and watched a lot of your vids leading up to it, keep up ghe great work!

[@ElectricSeal-bq5wu]

Thanks & congrats on the car!

[@xaviart4727]

There is rumor that there is coming pre-heating as OTA update, but lets see what happens...Thanks for informative video. 👍🙂

[@ElectricSeal-bq5wu]

Yes that is an intriguing rumor, let's hope it proves to be true!

[@carstenvanloo6223]

Wartet noch etwas. Im Februar wird etwas kommen. 👍

[@MacumbacaoExtrema]

I started using OBDII with Car Scanner about a month ago. I'm from Brazil, so the temperatures here are hotter. I installed the Car Scanner app in the Seal Multimedia Central, so I don't have to use my phone. Here are some conclusions I found 1) If the battery's highest temp gets above 45ºC, the car's available power drops to around 350hp. 2) if the SoC gets lower than 25%, the available power progressively drops (according to the Soc) 3) If the battery is at 26% or more you will have full power available (since the battery temperature is ok) 4) It uses the rear* motor when not using much power. The front* motor comes in when you need more juice. Edit: Maximum discharge power Is the power available from the High Voltage Battery to the rest of the car (heat pump unit, the 2 motors, etc). Full power should be 390kW+

[@ElectricSeal-bq5wu]

Thanks a lot, very informative!

[@Nuno_Tomas]

Você deixa a OBDII sempre ligado na porta ou só quando você quer ver as estatistica de alguma coisa? Obrigadi e saudações de Portugal... Abraço

[@ElectricSeal-bq5wu]

@@Nuno_Tomas Currently I have it unplugged, it is very quick to take out and put back in once you get used to locating the OBD port. But I suppose it could be always on if needed. Like some dashcams get constant power through the OBD port for parking mode, they are also meant to be plugged in constantly.

[@YusufDemir-iy5wc]

Veepeak Mini Bluetooth OBD2 Android can you make a video explaining the other features of this product. How does it show the status of the sensors? Or what does it say when there is an error in the vehicle? Do you think this product is compatible with Byd Seal U DM-I? By the way, you are doing great work, we enjoy watching it.

[@ElectricSeal-bq5wu]

Thanks! Yes, that's a good topic to explore further. So far I have used it to check this basic stuff but there's surely more. No idea about the Seal U DM-I, but it would be weird if it would not work

[@rommelreyes2209]

I think the higher voltage (800V) is only good for countries that has hot temperatures. Because the higher voltage will result in lower current to deliver the same power. Because of that the temperature doesn’t heat up enough. Opposite for EVs with lower voltage, higher current. Better for cold countries

[@ElectricSeal-bq5wu]

Interesting theory!

[@cv01302]

I have the Vgate vLinker MC+ ELM327 and I can only see the low voltage battery - no data for all other cells at the dashboard of car scanner app. I believe it is incompatible with the Seal. I chose it as it was in the recommended list for ABRP. Does the Veepeak that you tested, work with ABRP app?

[@ElectricSeal-bq5wu]

I tried the ABRP app and to connect the OBD reader, but it didn't find it in the list of devices to connect. I haven't used this feature of the ABRP app before, so I don't know if I missed something or is it just not able to connect to this reader.

[@cv01302]

@@ElectricSeal-bq5wu Thank you for trying!

[@gmargetis]

So to conclude is this a problem with version 1.3.1 cause mine does the same with this version. Do you know if there is a fix for that?

[@ElectricSeal-bq5wu]

You mean getting the battery up to temperature? I think it's pretty much to same in every version. Hopefully optimization is on the way

[@carstenvanloo6223]

Es wird bald eine Verbesserung kommen.

[@jihangaban]

'max charge' refers to regen. i think when you unplug the number will go back up.

[@ElectricSeal-bq5wu]

Oh, interesting 😲 But it showed 137 kW for me at one point, sounds quite hefty for regen.. 😁

[@ibet72]

@ElectricSeal-bq5wu have you measured the battery temperature during highway driving in cold weather? It must be frustrating if you are travelling and need to DC charge from 20-80 % but charging speed is dead slow due to a cold battery on arrival at the charging station.

[@ElectricSeal-bq5wu]

Not yet, but planning to do highway driving soon to check two things: the route planner accuracy with SOC estimations, and then this what you suggested. Although my expectation is that normal highway driving (without continuous rapid accelerations and braking) in winter conditions causes only minor increase in the battery temp... but let's see!

[@Randomas32]

So from the OBD you referred that our battery is a 800v architecture right ? By the way any other obd for iOS devices do you have to propose to us ?

[@CampbellMorkham]

The Seals with 82.56kWh Battery are all 800V Architecture. The ones with 61kW batteries are 400V.

[@dawasf394]

@@CampbellMorkham Correct, but I was told by my dealers tech here in Oman (in the Middle East) , that the 800v's from the battery are stepped down to around 400v for use in the car and the motors. The new seal will be built from the ground up with an 800v system. Much more efficient, less heat generation, thinner cables=less weight, and possibly will allow for a much higher top speed obviously with tweeks in the drive trains gearbox. There will always be the newer better X, so enjoy your seal like I will mine, planning to drive it until it dies in a junkyard ;D

[@CampbellMorkham]

@dawasf394 no, the battery is around 550V when idle and when charging the charger and battery is DC coupled and needs around 600 to 650V to charge. If you try to charge on a 400V charger the best you will get is about 115kW, with an 800V charger, you can get up to 150kW. This is a common problem with 800V Architecture EV's. Unfortunately they only work at optimum charging on 800V capable chargers.

[@davidolsson]

@@CampbellMorkham And that is slow for a 800V car sadly. Even slower than a 400V.

[@CampbellMorkham]

It's about cost and battery longevity. The new e-platform 3.0 EVO together with Blade 2.0 will improve that dramatically.

[@torpemonguz]

Yeah I use obd to monitor my battery temp and health. Very interesting the Seal no heating the battery in reality when You start to travel in minus degrees.. Heat up by ourselves if You push it.. I think this is a bit confusing. The battery management a bit week compair to Lfp Tesla's.

[@ElectricSeal-bq5wu]

Yep, there's room to improve the BMS

[@rommelreyes2209]

Will a standard obd2 reader work? I have a old bluetooth odb2 reader used on my ICE car

[@ElectricSeal-bq5wu]

@ I think it should be just fine. The one I have here is standard ODBII as well

[@davidolsson]

Hmm so no preheating when starting dc charging or navigating to dc charger?

[@ElectricSeal-bq5wu]

It's weird that the "warm tip: smart battery management in function" did not appear at the start of the DC charging session. But actually, what you can't see in the video, is that at the very end of this session, I think at 76%, this message appeared on the dashboard for the first time. I wonder what was going on there.

[@Gene-je2zq]

@@ElectricSeal-bq5wu I think the Seal 'battery management' only involves cooling - and that is unfortunately also quite poor. If you watch Bjorn Nyland review of the Seal (particularly 1000km challenge) you see he has 'rapid gate' issues. And there's no pre-heating option (manual or automatic). So what you saw at 76% was probably battery cooling starting.

[@ElectricSeal-bq5wu]

@@Gene-je2zq I've also witnessed the rapidgate myself on my 6700km road trip with the Seal (heheh, beat Bjorn's 1000km 😜). I was thinking the same that could it be the cooling process which started, but even that would be weird as battery was like 25-37 degrees warm, which is nowhere near the limit. Next time I'll keep the OBD attached and monitor it for longer.

[@Gene-je2zq]

@@ElectricSeal-bq5wu There are more parameters you can access with Car Scanner - like average battery temperature and I think there might be one which measures the coolant temperature. They would be interesting to monitor during a charging session.

[@carstenvanloo6223]

Hallo Ich habe über meine Werkstatt bei meinem Seal einmal den SoH auslesen lassen. Nach 42000 KM Laufleistung ist mein Akku bei 98%. Das spricht für den LFP AKKU von BYD

[@ElectricSeal-bq5wu]

It’s good. Although we don’t know how the buffers are calculated in SOH. E.g. all Hyundais report 100% SOC until the whole upper buffer is degraded, which means that the real degradation could be even >5% before the car shows 99%. This is good to keep in mind that we don’t know how BYD considers the upper buffer when reporting the SOH. But LFP is durable, no need to worry. 🙂

[@carstenvanloo6223]

Ich lade nur DC 👍

[@davidolsson]

Was it a 400 or 800V charger? I totally missed.

[@CampbellMorkham]

Must be 800V, as the video shows 600V charging voltage.

[@davidolsson]

@CampbellMorkham hmm then its very low speed for that charger. Internally the car bumps up the V to the battery V and the charger was a 200kw , max for 400V.

[@ElectricSeal-bq5wu]

800V

[@davidolsson]

@@ElectricSeal-bq5wu Shouldn't the car preheat and then just max out?

[@ElectricSeal-bq5wu]

@@davidolsson This would be optimal of course, but as you know it is not currently supported.

[@pteu11]

Do you need the Pro version of Car Scanner to view all these data?

[@ElectricSeal-bq5wu]

Nope, I have the free version in use here on the video.

[@ronaldmurray7746]

You're so boring

[@AllAutoMuseum]

were you expecting him to twirl and dance?