Wednesday, 7 January 2026

Images for Ola Roadster X 3.5 kwh

 In continuation of 

https://kyacatch.blogspot.com/2026/01/the-ola-roadster-3.html

...

 Images for your viewing pleasure:

 

 

 

 

Ola Roadster X 3.5 KWh

 Bought the Ola Roadster X 3.5kwh. Against all advice. Against all logic. Against all caution. Against previous experiences.

For those that want details: Here's the full booking experience.

- Booked at launch by paying a token amount.
- Paid full amount in Feb '25.
- Kept getting shifting timelines, so cancelled the order for a full refund in Apr '25.

..Interval..

Finally came to know that Ola Roadster X has arrived in Rajkot, Gujarat.

- Went to the showroom and took a test ride. Found the vehicle to be impressive in every way.
- Went to Ola service in Mavdi, and took a look around - an estimated 40-50 bikes lying around gathering dust. A closer look reveals mostly Gen1 & some Gen2, but couldn't spot any Gen3
- Mechanics and showroom staff kept saying that there is no delays and problems with Gen3. Assurances taken with a grain of salt.
- Visited 2-3 more showrooms. Response from staff rather disinterested, as though they couldn't care less whether or not they make a sale.
- Received a more positive response from Bhaktinagar showroom, including assurances for post sales help in case of service problems. They were very clear that service is not in their hands, the service center is independent of showrooms, but will try to intervene on my behalf if possible. Again, I don't believe it to be true, but it's better than a flat out denial of post sales contact.
- Now here's the surprising part. I was initially targeting the 2.5kwh, but the 3.5 kwh model carried a festive discount that actually made it cheaper than the 2.5kwh model!
- Confirmed the stock availability and delivery date. Then went with them to physically inspect the bike. Checked the bike, confirmed that delivery will be affected ASAP (within 1 week) and noted the VIN number to prevent any last minute shenanigans. The showroom staff offered me a choice of colors, but I told them that I don't care about the color, I want whatever was physically available. I'd had enough of delays and false commitments.
- Landed up with Pine Green.

- The showroom staff told me that I had to wait until the invoice and registration was processed to take the delivery. I insisted on delivery (in restricted mode) immediately after payment. Finally we settled on delivery the next day.

- Note about restricted mode: Until the registration and other paperwork is completed, the bike is in restricted mode. This means that the mode is limited to "Eco", the top speed to 42 kmph, and the maximum distance to apx 30+ KM.

- Made the full payment, and staff processed the transaction smoothly. Took (unofficial) delivery of the bike 2 days later - delay on my part, the showroom staff were very accommodating, but I was busy. Received the payment receipt and insurance details on email the next day after payment.

- In the meantime, I received multiple calls from Ola's call centers, but weirdly, they would call and disconnect after 1 ring. I guess they wanted their logs to show that they had made attempts to reach me ...?

- Finally, I received a proper call from an Ola rep - confirmed the bike details (model, color, VIN#) and then shared a vahan OTP for "new registration".

2 days later (today), received an email from Ola stating that registration was successful. Sent a message to showroom staff who checked their backend and gave me the license plate number.

Now waiting for the message from RTO for HSRP plates. Ola showroom staff have told me that they will do fitment after I/they receive the plates... I need to take the bike to the showroom.

Current status: Waiting for the HSRP plates, apx 15+ km run, and apx 15+ km remaining in restricted mode. Took the vehicle with a full charge, and, after running 15+ km, battery is down to 85%. Thus I assume a usable range of apx 70-80 km, as against the 155+ advertised.

More details on my experiences as the road unfolds...

 

Timeline of responses from Ola Electric...

 




Tuesday, 28 July 2015

More than 95% Android phones vulnerable to StageFright-based exploit!


This one's a doozy.

Experts at Zimperium Mobile Securityhave found a stunning vulnerability in almost all Android-based mobile phones.

This vulnerability allows a remote attacker to take over a victims phone by doing nothing much more than sending a specially crafted video via MMS. No interaction on the part of the victim is required!

The video triggers an internal Android program termed "stagefright", which trips up over the malformed video and allows the attackers program (embedded into the video) to run.

At this point, the attacker can do many things, including:
  • Delete stuff
  • Change stuff
  • (Scary) remotely access phone content without the owner even being aware of it.
For those with a technical bent of mind, read more at the Imperium blog.

Saving yourself from this vulnerability requires you to update the Android phone OS. Unfortunately, except for those who are using Google phones (Such as the Nexus) or those phones under the Google One program (limited models of Micromax, Spice, Karbonn) this is not an option.

Most phone manufacturers are very slow at providing updates. Usually, phones over 18 months old will not receive updates at all.

So, short of buying a new Android phone, what are the options available to avoid this vulnerability?

If you are tech-savvy, or know someone who is, you can opt to root your phone and disable StageFright. However, this option is not for everyone.

The simplest thing you can do to prevent this is to disable MMS if you are not using it at all.

To disable MMS: On most Android phones, go to Settings->More->Mobile Networks->Access Point Names.

Among the list of access points, you will find certain marked as MMS. Touch each one,  then change the following settings to junk values:
  • APN
  • Proxy
  • Port
  • Password
  • MMS Proxy
  • MMS Port
  • Uncheck APN enable/disable (most models do not have this option)
Then touch the menu button, and choose the "Save" option. This will disable ALL MMS functionality!

Sequence to disable MMS : click to see full size

You can restore it easily if you like by going to the APN settings page. Touch the menu button, and choose "Restore settings to default."

Also suggested is to disable the Google Hangouts app from being the default messaging app. To do this : Open the Hangouts app, then slide open the settings pane. Choose "Settings"-> "SMS"-> SMS enabled, and change the setting to disabled.

Friday, 5 June 2015

Computer power supplies (SMPS): Cheap is NOT best

One of the main components of any desktop system, and the one most ignored, is the power supply (SMPS).

95% of India-assembled systems use cheap no-name China SMPS's. Most large reseller "brands" also sell these cheapo power supplies.

The reason for their popularity is the compelling price difference. A "no-name" / "reseller brand" power supply retails for as low as Rs 500 for 450 watts (example), while the good brands start at Rs 2,000+ for 350w. So, it seems as though not only are you getting a cheaper power supply, you are getting more power in the bargain.

As usual, the devil is in the (technical) details. However, let's start by seeing something even a layman can understand:

"no-name" SMPS 450w
Weight : 584.6 gms
Antec VP450P 450w
Weight: 1618.1 gms

The Antec SMPS on the right weighs almost 3 times (~ 276%) more than the "no-name" SMPS on the left. 

However, this is only a symptom; the real problem? Read on...

Both power supplies claim to have 450w output. Background info: SMPS's output at different voltages, as shown below:
 

3.3v x 25A = 82.5 w
5v x 38A = 190 w
12v x 15A = 180 w
Theoretical Total : 452.5 (~ 450w)
Efficiency not mentioned: unknown
3.3v x 24A = 79.2 w
5v x 15A = 75 w
12v (1,2) x 18A (each) = 432 w
Theoretical total: 586 w
Efficiency mentioned 78% 
Total: 457.08 (~ 450 w)


Catch 1:
The total wattage calculation is arrived by multiplying the output voltage with it's corresponding amperage rating. So in this case, both supply power output over 450 w. However, note that the Antec actually can supply a maximum theoretical output of over 580w - but not reliably. Given a mentioned efficiency of 78%, it can reliably supply a continuous load of 450 w. There is no efficiency ratio mentioned in the case of "no-name", however, it definitely cannot be 100%.

Catch 2:
The bulk requirement for power in most computers comes from the 12v rail. However, components that supply reliable 12v generate heat. This must be removed by using quality heatsinks and fans. The "no-name" SMPS reduces the amperage on 12v so that it can skimp on the (heavy) heatsink. However, to maintain a 450w rating, it raises the current available (amperage) on 5v to absurd levels.

This becomes clearer when we compare with other "real" power supplies as well:
Brand / Model
3.3v
5v
12v
3.3v+5v
12v
"no-name" 450w
 25 A  
 38 A 
15 A
272w
 180w 
Cooler Master CM350 350w
20 A
12A
 10 A + 13 A 
126w
276w
Antec VP450P 450w
24 A
15 A
 18 A + 18 A 
154w
432w
Circle Tech CT 500w
20 A
20 A
32 A
166w
384w

In every case, we see that 3.3v+5v power (wattage) in "no-name" is absurdly high when compared to the expensive "real" power supplies. Similarly, the 12v is very low.

On the "no-name", there is no way one can actually reach the absurdly high load provisioned on 3.3v+5v. However, you will definitely max out the 12v power available even with a very ordinary load.

Catch 3:
Brand / Model
Calculated rating
(theoretical)
Actual rating
mentioned
"no-name" 450w
452.5w
450w
Cooler Master CM350 350w
402w
350w
Antec VP450P 450w
586.2w
450w
Circle Tech CT 500w
550w
500w

No power supply, no matter how good, can work with 100% efficiency. In every case for the real power supplies, the theoretical rating (wattage of 3.3v+5v+12v) is far over the actual rating. However, in the "no-name", the theoretical rating is treated as the actual rating, with no mention of power conversion efficiency.

Note the massive difference in Antec: This doesn't mean that it is inefficient, it just means that as load increases in 12v1, the max load on 12v2, 3.3v and 5v will reduce, and vice-versa. In other words, there is no way Antec expects you to touch the theoretical load on all rails (3.3v, 5v, 12v1, 12v2) simultaneously.


These "no-name" cheap and unreliable power supplies are the leading cause for failure in most systems. Unfortunately, while the power supplies themselves rarely fail, they invariably cause damage to sensitive electronics such as the motherboard, hard disk, etc, due to non-spec or unreliable supply of load.

A good power supply not only provides reliable and stable power, it will usually sacrifice itself (by failing) when non-spec power (eg over-current) is supplied, to protect sensitive (and usually expensive) components.

So the next time you find your Graphic card, HDD or DVD drive acting up, take a good, hard look at the power supply.

Spend a little more on your power supply, it will reward you in the long run with reliable system performance.

If you are buying an assembled system, insist on a good power supply, and compare the wattage chart with those mentioned above. Remember, 12V load is important, the others less so.

Sunday, 24 May 2015

"Soft" drinks : hard to swallow facts


As parents, we've all been there. It's a hot, sweaty day, the kids are cranky, and we just give them something to cool off and let us take a breather.

However, "soft" drinks are not an healthy idea. Here's why:

Below, I have shown the "Nutritional facts" panel on two popular "soft" drinks. Lets look at them in detail:


Both panels show almost 16g of sugar (natural + added). However, the key is what is written above the panel: these values are PER 100 ml (milliliters).

Each drink above is 250ml - which means that each packet contains essentially almost 40 gms (about 10 teaspoons of sugar). This much sugar is NOT healthy for kids. Don't do it.

Take a further look at the ingredients : The "fruit" content is less than 20% (14% apple juice, 19% mango pulp). This means that over 80% content has nothing to do with real fruit !

Both claim a fat content of 0%. That sounds healthy, until you realize that both contain carbohydrates of about 40g each. Carbohydrates are converted into glucose when the body requires energy (exercise, daily activities etc), but are stored within body fat until required.

If the carbohydrate intake is too high, the body generates more fat to store it all. So while the drinks themselves may not have any fat content, it can act as a trigger for the body to retain fat from other sources!

Also, remember all that sugar mentioned before? If not used during exercise (as glucose), that too turns into carbs, to be stored in fat.

Carbonated "soft" drinks are almost as bad. 

So the next time you want to get a quick drink for your kids, or pacify them, don't reach out for the convenient "soft" drink. Take the trouble to find a natural fruit juice stand; it's more expensive now, but healthier kids are worth a darn lot more.

Saturday, 23 May 2015

When bigger is not cheaper

When buying household provisions, bigger is usually cheaper, right?

Not in the case of Britannia Jim Jam biscuits.



A 100g pack costs Rs 15 (MRP), making a cost per KG of Rs 150.

A 150g pack costs Rs 25 (MRP), making a cost per KG of over Rs 166.65 !

That's a difference of almost 11% more for the larger pack!

Many companies use non-standard sizes to ensure that comparisions are difficult for the average consumer. Always try to estimate the price/weight for a good deal.

For example, in the above case, a quick estimate can be performed as follows:
for 300g,
small pack price will be 15 x 3 = 45
big pack price will be 25 x 2 = 50

Thus we can see that buying 300g in small packs is a better deal than buying large packs!


Friday, 22 May 2015

Manipal Global's elastic fees

I received an email from Manipal Global, offering an Android Development course.

A click through for more details showed the price as Rs 6,000 - discounted from Rs 8,000 all inclusive.

However, the representative I communicated with said the normal course fees were 7,000. When I pointed out that the website fees were different, she asked for a screenshot via email. I sent her a screenshot as below (price near top right corner) :






A few days later, the upshot? They increased the website price!



Companies like this will always have a raw deal for consumers. Approach with caution.