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Frequently Asked Questions

Should I allow the battery to discharge fully before putting it to charge?

In case of petrol vehicle do you wait till every drop of petrol is consumed? Why not? The dust, which may be at the bottom of the petrol tank may enter fuel pump and jam the pump. The pump may need replacement.

Why do you want to discharge the battery to full? Our batteries come with a mobile app, which will show you remaining Ah (battery capacity) and %. Please put the battery to charge when it is 10% or even higher. In case the battery is 50% discharged and you may need to travel a distance, which may need more than 40% then put the battery to charge till it reaches 60% or more to be on the safer side. Charging in-between 10% and 90% is completly safe and will not reduce the life of the battery. Infact it will increase the life. Keeping battery all the time charged between 20 to 80% will double the life of the battery and keep you free from worries. Please do not compare our battery with mobile phoe or laptop. It is a proven sientific fact. That is why Tesla is able to give 10 Years warranty on battery.

We are battery pack manufacturer alongwith scooter manufacturer. This is the reason that we understand the technology and battery chemistry. We believe that if a company is not making batteries they are not selling Electric vehicle, they are probably selling a scooter only.

Our new batteries are very high end batteries. It takes care of itself. Our customer need to just understand it. The benefits are unlimited once you get familiar with them.

What if the battery is fully discharged and not starting to charge immediately?

The battery will go into protection mode if discharged fully. It will stop charging when connected to a charger immediately after full discharge. We have done it with a purpose. The battery will start recovery within a hour or so before it is safe to start charging.

This is one of the reason why we don't recommand full discharge. In case if it doesn't start charging after few hours please send an email on service@dexpress.co.in with a screenshot of the app for our engineer to identify the issue and provide you with a solution as quickly as possible. Our engineer will not be able to help unless they see the screenshot. In some cases they may need to connect to your mobile phone via an app called AnyDesk for remote assistance.

What is the range of Dexpress vehicle?

We warranty Battery capacity not the range. Our new batteries have mobile app, which shows the battery capacity and drop in charge in % and Ah as you ride the vehicle. Range depends on many factors as follows;

  1. Traffic conditions have the worst impact on the range. The range may reduce at least 20 to 30% of the maximum range, in heavy traffic condition compared to empty road.
  2. Double seat can reduce the range by 20% over only rider weighing less than 70kg.
  3. Rider's riding behaviour‐Frequent and sudden braking, rash driving will reduce range substentially.
  4. Road conditions‐Uneven and rough will have more road resistance and reduce range.
  5. Wind conditions‐Head wind will reduce the range.

Kindly refer to our SET YOUR OWN RANGE section on home page to estimate range you are likely to get with a particular size of battery in different conditions. These figure are indicative and arrived after some testing on Mumbai roads.

Why Lithium and not Lead acid Battery?

Lead acid batteries are comparatively cheap to bring down the initial cost of the vehicle, but there are following drawbacks;

  1. Lead acid have the shortest cycle life. It can't last more than a year. There is a recurring cost every year which is almost equivalent to cost of new battery.
  2. Lead acid is very heavy therefore difficult to carry for charging purpose.
  3. Lead acid is bad for the environment due to lead content.

Lithium Iron Phosphate(LFP) batteries can last 5 to 10 years depending on the use as described in the battery maintenance section.  Weight of the Lithium batteries makes it portable (especially in 2-wheeler) due to its weight which is ½ to ⅓ of Lead acid. In the long run they are definitely very cost effective.

Why we choose LifePo4?

Life of the battery

It has a life cycle of 1500 to 2000 or more depending on use.  With normal use and once a day charge it can last up to 5 years. This is one of the longest lasting battery type commercially available.

 

Safety

It doesn't catch fire or blast unlike Lithium Ion (NMC). This is one of the safest lithium chemistry.

 

Portability

It weighs around 12 to 18 kg depending on the size, which is portable for those living in apartments with elevators. It comes with a battery case, which has handle to carry comfortably.

What saving is possible by EV over petrol run 2 wheeler?

DeXpress comes with the battery capacity ranging from 1 to 2.1 KW. The average range of 70 to 120 Km can be achived depending on riding conditions. The fuel cost estimates to 2.75 Rs/Km.  considering the average consumption of 1 litre fossil fuel for 35 to 40 km. Following savings are calculated on these basis;

70 Km / day    192 Rs/Day    70,000 in a year      6 days a week will save 60,000/year

50 Km /day     137 Rs/Day    50,000 in a year      6 days a week will save 43,000/year

30 Km /day   82   Rs/Day   30,000 in a year      6 days a week will save 26,000/year

The vehicle cost can be recovered in 1 to 2 Years. The vehicle is designed for delivery of goods by the shops and restaurants. They use much more than the average per day.

The above calculations are just an indications and not a claim for Dexpress vehicle and/or battery. These calculations may vary substentially depending on various variable factors.

What about damages due to accident?

    This vehicle is designed for delivery or shopping within the city limits and mostly within 5 to 10 km radius, though it can be used for long distance as well. Therefore, the max speed is limited to 25 Km/hr. It reduces the chance and severity of an accident.


    The body is designed with least use (negligible) of plastic. The tubular High Carbon Steel body doesn’t get damaged with minor collisions and also acts like a protective gear to the rider.

Do we need Driving License, RTO number, Insurance?

The vehicle is certified by ARAI and ICAT under max speed 25 km/hr category; it doesn’t fall under motor vehicle act and therefore doesn’t need any license, RTO registration or mandatory insurance. We recommend third party insurance or full insurance as per the customer choice.  We don’t include insurance in the price.

What is convenient method to charge the battery?

Battery is portable as well as can be charged on vehicle. It can be charged at home/office/anywhere.

Weight of the battery?

12 to 18 kg maximum depending on the size of battery.

Charging time of battery?

4 to 6 hour with the charger provided with the vehicle.

What is the cost of battery or Motor? Is it available in the open market?

At present they are not available in the open market. We don't recommand any other brand of battery to be used with Dexpress vehicle. We will provide this support.

What is the cost of key parts like motor/battery/controller/lights etc?

Battery is the most expensive part of the vehicle; we give 2 years warranty, though the life is more than 2 years. The battery technology is fast evolving and cost is falling every year. Therefore by the time warranty is over and battery needs replacement, the cost will be substantially lower than the current time.

What is the insurance offered by DeXpress.

Insurance against accident can be offered as per the insurance policy and rates at customer cost.

What is price difference between a normal Petrol Scooter and Electric Scooter?

We don’t believe an Apple can be compared with a Banana.

How do we contribute to our country's economy?

With every purchase of DEXPRESS vehicle you save on fuel which in turn saves precious foreign exchange and the environment