High Voltage Battery Information
supporting the onboard electronics and auxiliary low
About the High Voltage Battery
voltage battery. Once this low-power consumption
mode is active, immediately plug in Model Y to prevent a
jump start and low voltage battery replacement.
Model Y has one of the most sophisticated battery
systems in the world. The most important way to
preserve the high voltage Battery is to LEAVE YOUR
VEHICLE PLUGGED IN when you are not using it. This is
particularly important if you are not planning to drive
Model Y for several weeks.
NOTE: If Model Y is unresponsive and does not unlock,
open, or charge, the low voltage battery may be
discharged. In this situation, try jump starting the low
voltage battery (see Jump Starting on page 227). If the
vehicle is still unresponsive, contact Tesla.
NOTE: When left idle and unplugged, your vehicle
periodically uses energy from the Battery for system
tests and recharging the low voltage battery when
necessary.
Temperature Limits
For better long-term performance, avoid exposing
Model Y to ambient temperatures above 140° F (60° C)
or below -22° F (-30° C) for more than 24 hours at a
time.
There is no advantage to waiting until the Battery’s level
is low before charging. In fact, the Battery performs best
when charged regularly.
NOTE: If you allow the Battery to discharge to 0%, other
components may become damaged or require
replacement (for example, the low voltage battery). In
these cases, you are responsible for repair and/or
transporting expenses. Discharge-related expenses are
not covered by the warranty or under the Roadside
Assistance policy.
Energy Saving Feature
Model Y has an energy-saving feature that reduces the
amount of energy being consumed by the displays when
Model Y is not in use. On newer vehicles, this feature is
automated to provide an optimal level of energy saving.
However, on older vehicles, you can control the amount
of energy being consumed by the displays by touching
Controls > Display > Energy Saving. For more
The peak charging rate of the Battery may decrease
slightly after a large number of DC Fast Charging
sessions, such as those at Superchargers. To ensure
maximum driving range and Battery safety, the Battery
charge rate is decreased when the Battery is too cold,
when the Battery’s charge is nearly full, and when the
Battery conditions change with usage and age. These
changes in the condition of the Battery are driven by
battery physics and may increase the total
Supercharging duration by a few minutes over time. You
can minimize the amount of charge time by using Trip
Planner (if available in your market region) to warm the
Battery while driving to a Supercharger. See Trip Planner
on page 157 for more information.
information on maximizing range and saving energy, see
Getting Maximum Range on page 175.
Lithium Iron Phosphate Batteries
Some vehicles are equipped with a Lithium Iron
Phosphate (LFP) Battery. To determine if your vehicle is
equipped with an LFP battery, navigate to Controls >
Software > Additional Vehicle Information. If your
vehicle is equipped with an LFP battery, "High Voltage
Battery type: Lithium Iron Phosphate" is listed. If your
vehicle does not have an LFP battery, the high voltage
Battery type is not specified.
Battery Care
If your vehicle is equipped with an LFP Battery, Tesla
recommends that you keep your charge limit set to
100%, even for daily use, and that you also fully charge
to 100% at least once per week. If Model Y has been
parked for longer than a week, Tesla recommends
driving as you normally would and charge to 100% at
your earliest convenience.
Never allow the Battery to fully discharge. Even when
Model Y is not being driven, its Battery discharges very
slowly to power the onboard electronics. The Battery
can discharge at a rate of approximately 1% per day,
though the discharge rate may vary depending on
environmental factors (such as cold weather), vehicle
configuration, and your selected settings on the
touchscreen. Situations can arise in which you must
leave Model Y unplugged for an extended period of time
(for example, at an airport when traveling). In these
situations, keep the 1% in mind to ensure that you leave
the Battery with a sufficient charge level. For example,
over a two week period (14 days), the Battery may
discharge by approximately 14%.
In addition, a best practice is to allow Model Y to "sleep"
regularly by parking it with Sentry Mode disabled, when
possible. Consider using the Exclude Home, Exclude
Work, and Exclude Favorites settings to prevent Sentry
Mode from automatically activating at locations it is not
needed (see How to Use Sentry Mode (Camera + App)
on page 142).
Discharging the Battery to 0% may result in damage to
vehicle components. To protect against a complete
discharge, Model Y enters a low-power consumption
mode when the displayed charge level drops to
approximately 0%. In this mode, the Battery stops
Following the above guidance maximizes available range
and improves the vehicle's ability to accurately
determine the state of charge and estimated range.
Charging and Energy Consumption
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