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Charge Time Calculator: Configured for Atto 3.

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Calculator notes and instructions.

The three modes:

  1. Time to charge to %: just fill in the initial charge percentage and the desired charge level.
  2. Time to charge (and charge %) to have a desired range.
  3. Time to charge (and charge %) to add desired additional range.

Time is currently minutes, not minutes and seconds.

I have significant analysis of EVs in general, and some of the Atto 3 in specific, as I feel it represents the start of a 3rd wave of EVs. As I get more data, I will update calculations.

All charge times are best case scenarios, as many things can delay charging, including the charger breaking down as you go to use it, or someone else plugging in to the only available charger just as you arrive.

Apps like a better route planner have built in calculations, but these do not always match people experiences with vehicles, particularly newly released vehicles. This calculator allows modifying the charge curve data to get result consistent with a person’s experience. Plus it is easy to calculate times for alternative plans, and use together with other route planning.

This is a first version, and will adapt to feedback. I suspect it is slightly optimistic, as currently only calculates time under ‘ideal’ circumstances. Plus there is the time for plugging in an getting the charger started to be added.

Atto 3 Charge ‘Curve’.

Charge curve from BYD via EVs & Beyond NZ.

It is not clear if this data is ‘charge added’, or ‘power to the battery’, or even power sent from the charger.
In all cases there will be some losses. The ‘losses’ field can be adjusted to allow for this.

Further, this curve is under ideal conditions. As noted on the Atto 3 page, people have recorded very different charge curves in extreme temperatures, or on chargers with more real world constratiants.

Updates.

  • *2022 September 28: Added charge loss calculations and moved loss setting to 1st page.
  • 2022 September 27: Initial version.

Features to be added:

  • Ability to save charging curves for different vehicles.
  • Currently assumes >= 150kW charger, other charger options to be added.

If people find this useful, please indicate with likes (page top right), and then I will keep updating.

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The world of EVs is changing, as is the leadership. Tesla lost 50% of its valuation in 2022. Some are predicting it will lose half of the remaining value in 2023, and although others predict the stock price will rebound, both outcomes are possible, and which becomes reality could depend very much on whether Tesla can remain ‘cool’, or through Musk and twitter becomes linked to far right.

Although entire EV future is not dependant solely on Tesla, a decline could have wide implications, for the market, competitors and the global transition to EVs. Not only are the ‘legacy’ automotive companies GM, Ford, VW and Toyota competition for the hearts and dollars from consumers, but also BYD, who is already taking the EV lead from Tesla.

Keys factor in EV trends during 2023 could turn out to be who is ‘cool’, shifting perceptions of a climate threat and the need for rapid response, and the impact of conflicts such as Ukraine. Rapid radical change for the industry, but it will take longer to impact consumers.

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Auto makers must either 1) find a way to make EVs at profit, 2) close down, or 3) hope there will still be a large enough ICEV market for them to survive. Highly funded research indicates that in future just 5 EV brands will dominate 80% of vehicle the market, and the reality is only one of the top ten automotive brands from 2021 is a likely contender.

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People have for decades owned cars without needing to refuel at home, so it may not seem obvious just how important home charging is for owners of EVs. Various surveys confirm that 80% to 95% of EV charging happens at home and given that less than 80% of people have access to a space to be able to charge at home, those who can’t charge at home are less likely to buy an EV.

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I started a page on the Atto 3 back in April 2022, but the launch in Australia has become so complex that it justifies a separate page, so here it is together with NZ information, starting with content moved from the original page, but updated.

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For the general overview of the Atto 3, including information learnt from the experiences of owners, including those in Australia and New Zealand, see the main Atto 3 page. For the strange events around the Australian launch, and the use of the centre rear seat for baby capsules, read on!

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