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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Table of Contents

Categories

Software and tips for BYD Atto 3 + other BYD EVs.

Although this page was launched with information on side loading Apps to the BYD Atto, it is progressively being updated with more tips for BYD Atto 3 owners such as charging and battery care. For those considering buying an EV or other content on the Atto 3 and on BYD can be found on other EV pages on this site.

Rather than a typical webpaper, this page is really only of interest to owners of BYD vehicles.

See page contents dropdown for an index to this page and a list of what is covered.

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Update in progress.

To make sense of all the often seemingly conflicting information on “regen“, one-pedal-driving, and how to best drive an EV, it can really help to understand that in most EVs the regenerative braking is fully integrated into the braking system and the two different regen system in use in EVs can suit two very different driving styles:

  1. 1. Lift-off regen: In all EVs and like engine braking in an ICEV.
  2. 2. Brake-by-wire regen, an additional regen system in most EVs.

Confusion over these two systems is part of regen confusion, but there are many myths and so much misinformation about regen-braking, lift-off regen and one-pedal-driving including that “one-pedal-driving” is not the most efficient way of driving, and that the regen you feel from lift-off is not all the regen.

Despite the fact there is so many myths leading to so much misinformation making it sound complex, driving an EV for optimum efficiency is usually extremely simple.

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If a battery is quite small, as is usually the case with a hybrid (HEV), and even most plug-in hybrids (PHEVs), there will be limited total distance that can be driven “emissions free” before battery degradation, which is why use of fossil fuels is a necessity for most hybrids.

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Despite this level of sales success, as the Atto 3, as it is known outside China, arrives in new markets, reviewers often struggle to communicate the significance. As the international bestselling model of the BYD brand responsible for 6 of the 10 top bestselling EVs globally.

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The two speed EV transition: Manufactures vs consumers. (part 1)

It is easy to underestimate how long it will take consumers to transition to EVs, and equally easy to underestimate how urgently manufactures need to transition to avoid collapse.

Two transition speeds? Yes, brands will switch to EVs in their showroom by 2025 or risk failure, but in what seems like a complete disconnect, there will still be internal combustion vehicles on the road past 2050.

Around 10.5 million Electric Vehicles were delivered in 2022, which resulted in less than 0.7% of Internal Combustion Engine vehicles (ICEVs) being replaced by EVs during 2022, even those EVs represented 13% of new vehicles sales.

The data shows that new car showrooms transition to EVs 20x faster than the roads, and vehicle manufacture transition 20x faster then the public, and while ICEVs will likely still around beyond 2050, vehicle makers that can’t switch fast enough could collapse by 2030, bringing radical economic change.

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