[v.ak]

Finally got my Desert Myst BumbleBE today after a long wait. The guys in Anant Cars Bannerghatta Road were really friendly and helped throughout the process with full dedication. Except the app, not yet showing the car details, everything seems to be working fine so far.

[carjack3090]

Originally Posted by ferrarirules

The only problem of this approach with any EV today is that govt is offering benefits (5% GST, no road tax) today. These may or may not be there in 2027.

I think this will remain till 2030 atleast as EV adoption has been slow.

[raviemailid]

Originally Posted by carjack3090

I think this will remain till 2030 atleast as EV adoption has been slow.

Thats a very hopeful thinking.

The way our govt is taxing us, it is not very far away. Centre just increased the excise duty by 2 rupees on diesel and petrol. Karnataka had increased it by 2 rupee just a few days ago anyway. Overall tolls have also gone up 3-4% across all highways.

Govt EV taxation policy mainly depends on the EV lobby and effort-vs-reward math of it. As of now, with Tata and Mahindra in the EV race, the lobby is strong and the earning is not high enough to be labeled EV hater govt.

[carjack3090]

Originally Posted by raviemailid

Thats a very hopeful thinking.

The way our govt is taxing us, it is not very far away. Centre just increased the excise duty by 2 rupees on diesel and petrol. Karnataka had increased it by 2 rupee just a few days ago anyway. Overall tolls have also gone up 3-4% across all highways.

Govt EV taxation policy mainly depends on the EV lobby and
Effort-vs-reward math of it. As of now, with Tata and Mahindra leading the EV race, the lobby is strong and the earning is not high enough to be labeled EV hater govt.

Umm not related but those 2 rs will not be borne by retailers but OEM like BPCL and HPCL

[gaurav371]

Unless the ev prices fall the concessions will be there to enable adoption. The push to increase electricity generation is simply missing so charging will continue to be a hassle. And if ev prices do fall the taxes won't matter.

[BreeN95]

Hey Guys. Did any of you get a service reminder notification at around 800kms? Normal?

Also, regarding the cell imbalance issue reported earlier. My car jumped from 91% to 100%. But when I look at the quantity of KW consumed for charging it adds up to 79kw after I minus the distance travelled (see the screenshot) so it should be fine right? Maybe it’s because the cells are rebalancing for the first time?

[SLK]

Originally Posted by BreeN95

Can you please explain if charging to 100% is the best always? Or only once in a while to do the cell balancing? Also only on AC charging right? I have the 11 kWh fast AC charging. Should I just charge it to 100% all the time?

Two quotes from the XEV 9e owner's manual:
"It is recommended to let the vehicle reach a full 100% state of charge (SoC) before ending the charging session."
"Normal Charging: Always charge vehicle to 100% state of charge."

[johy]

Originally Posted by puntolover

Today I was convincing by Chacha to buy Xev 9e by replacing his Isuzu MUX but now we will wait a year for Mahindra to sort all the issues from the cars.

A year won't change a thing. Wait - these technologies are still at an early stage.

[electric_eel]

Originally Posted by BreeN95

Hey Guys. Did any of you get a service reminder notification at around 800kms? Normal?

Also, regarding the cell imbalance issue reported earlier. My car jumped from 91% to 100%. But when I look at the quantity of KW consumed for charging it adds up to 79kw after I minus the distance travelled (see the screenshot) so it should be fine right? Maybe it’s because the cells are rebalancing for the first time?

Do a few low SoC (say 10-15 %) to 100% AC charging. This should fix the issue.

If you are worried about being stranded then I suggest that you assume pessimistically that there is an error of about 9% SoC in your SoC display.

So for the very first charge be conservative and bring the SoC to say 20% (An error of 9% SoC means that your real SoC can be as bad as 11%) and charge till 100%. See if there is a jump still (most likely it would be by a smaller amount say 5%). So in the next cycle go till 15 % SoC and charge till 100% continue doing this till there is no more jump. At least once go below 10% SoC and do a full charge. You should be ready to go then.

Also what does the user manual of M&M say about the charging ? Some EVs have a BMS reset button I am told. Is there one in your car (Check the manual) ? Otherwise there is also the "disconnect the 12 V battery and pray" option. I am assuming you will not need this.

[DCEite]

Originally Posted by ferrarirules

The only problem of this approach with any EV today is that govt is offering benefits (5% GST, no road tax) today. These may or may not be there in 2027.

For someone spending close to 30lacs + on these vehicles, do those exemptions really matter ?

[StrykerEV05]

Originally Posted by BreeN95

What is the TATA BMS issue? Can you help?

https://www.team-bhp.com/forum/elect...-tata-evs.html (HV Critical Alert in Tata EVs)

Refer to the above thread for HV Critical Error.

I have been driving the Nexon EV for the past 40 months, got my Main Battery Pack replaced under warranty just 3 months back.

Issue: The car used to work normally till about 30% from a full charge and then in 1-2km it used to drop very quickly from 30% to almost 1%. So basically the car was usable only upto 30% charge. This issue festered over time, initially when the car was 2 years old this issue used to occur close to 10-12%, so the car used to last hardly 2-3km after 12% whereas under normal situations it should last for atleast 25km. With time the charge threshold kept moving up. Since the Nexon EV was my only car, and Tata guys don't give a backup vehicle I kept the car without giving it to the service station for resolving this issue. (P.S. The regular service was done at 6 month intervals and they never identified any issue with the battery)
Finally gave the car for a week in Jan this year and they did return the car quite quickly. I'm impressed with that, I know a few owners who had their car in the workshop for 4 weeks, I got mine back in just 1 week.
I was worried about underbody damage. There is also a thread where Tata was denying warranty on battery packs which had slight damage from the bottom. In Mumbai roads, I have occasionally encountered some massive pot holes, I was praying for them not to have caused damage, thankfully mine was safe.
When giving the car the usable range was 100-37%, post that a very steep drop, every 50-100m the car used to lose 1% charge.

After Replacement: I think given my urgency they gave me the car too soon without testing much with the new battery pack. In the charging curve I can see the battery jumping from 78% to 100%, I was worried initially. But after having driven about 2500km since the battery change I think the issue is solved. I have taken the car upto 15%, it is discharging linearly. No steep drops, 1% is giving me close to 2.5km.

Overtime by charging upto 100% each time I have been able to improve the battery health, now the charging jumps from 90-100%. I think after a few more charges it should get balanced further.

Sorry for the long post, just thought of letting you know the perspective of a 3.5 year old EV owner

Attaching few screenshots of the charging issue faced post battery replacement. Also the last screenshot shows the steep drop pre replacement. Charge used to come up very quickly too (5%-35%) using a 3kw charger in just 5 mins

[carjack3090]

Meanwhile according to Vahan the Born electrics have crossed cumulative sales of 2000. Has been 15 days since the deliveries have started

[BlueGod]

Charge it 100 percent at least once in 3-4 charging cycles but don’t allow the car to sit idle at 100 percent for longer periods. In my case, car is mostly used on weekends so I charge it on Friday night. Same can be done on Sunday night for people who take their cars to office. Ideal case (LFP or NMC) the battery has to remain in between 20-80% for very good health (usability of 15+ years ).

All these small things have to be taken care for EV but when it comes to driving fun and money saving nothing comes close to EVs. Didn’t even bother to check the news related to petrol price. Borne by govt, borne by oil companies, who cares.

[officer416]

LFP batteries should be charged to 100% as much as possible. Don't restrict is to 80% to protect the battery, as it won't help but more damage it.

If it was NMC then one can limit the charging to 80% or keep it around 50%.
Recent tests has suggested that batteries stay healthy when they get constant charge and discharge. So when we drive in normal traffic with regen on, batteries are going through that cycle.

In India pretty much all manufacturers are using LPF chemistry for cost and performance. Going by data collected by Tesla over the years, they too recommend charging to 100% everytime for there LPF battery pack source from China.

[greenoval]

I am considering BE 6 as the potential replacement for my 10 year old POLO Diesel TDi. However, I do not have the provision to charge the car at home (no scope of installing a dedicated charger or even use the 15-amp outlet). I plan to use commercial charging stations to charge the car. The idea is to DC fast charge the car routinely interspersed with 7.2kW AC charging. As a novice, I had a few queries on EV charging -
1) Do commercial charging stations also have 7.2kW AC charging facility?
2) Will it matter if I charge the car to 100% using DC charging or should I use AC charging whenever I plan to charge to 100%?
3) Can I charge to 80% using a DC charger and the balance 20% using AC charging?
4) Also, from what I understand 7.2kw AC charging will typically take over 10-12 hours to charge a 79 kWh battery pack. Do commercial charging stations allow a car to be parked for long hours?

Sorry for the noob questions, I am trying to find ways around the challenge of home charging to get BE6 home.