Skip to content
Zeekr Insiders home
Join us

Charging to 80% vs 100%

Last checked: 8 November 2026.

"Charge to 80%" is the most repeated EV rule, and it is only half right. It comes from NMC batteries. LFP batteries are usually treated differently. First check which you have: NMC vs LFP batteries.

Check the manual first

We could not find a Zeekr Australia statement of recommended daily charge limits for any grade. The advice below is general industry practice from other makers and third parties. Where your Zeekr owner's manual or the in-car charge settings say something different, follow them. Ask Zeekr Australia to confirm for your grade.

The short version

Battery Typical daily limit Full charge (100%)
NMC (X AWD, 7X Long Range and AWD, 009) About 80% to 90% Fine for trips, avoid leaving it sitting full
LFP (X RWD, 7X RWD) Many makers allow 100% daily Done regularly, often weekly, to keep the gauge accurate

Tesla's guidance is the best-documented example: 80% to 90% for NMC and NCA cars most of the time, with 100% kept for trips, and a 100% daily limit with a full charge at least weekly for LFP cars12. That is Tesla's advice for Tesla cars, not Zeekr's.

What should I set my charge limit to? Decision flowchart for a daily charge limit. First find which battery your Zeekr has. NMC: a daily limit of about 80% to 90%; if a long trip is tomorrow, charge to 100% shortly before you leave, otherwise stay at the daily limit. LFP: daily at the manufacturer-permitted limit, often 100% (general industry practice, not Zeekr-confirmed), and charge to 100% at least weekly for calibration. In both cases your Zeekr manual and in-car settings override the chart. CHARGING TO 80% VS 100% Charge to 80% is only half right. The right daily limit depends on your battery. Which battery is in my Zeekr? See the NMC vs LFP page NMC or LFP? NMC LFP Daily: about 80% to 90% Long trip tomorrow? Yes: charge to 100% shortly before you leave No: stay at your daily limit Daily: the maker's permitted limit, often 100% General practice, not Zeekr-confirmed Charge to 100% at least weekly Calibration Your Zeekr manual and in-car settings override this chart
A starting point, not Zeekr advice. Your owner's manual comes first.

Why NMC gets the 80% advice

  • NMC voltage rises steadily as it fills, and the generic data notes that a high charge promotes thermal runaway4. Sitting at a high state of charge is the harder case for the chemistry.
  • Sources commonly recommend keeping NMC packs around 20% to 80% day to day for longevity5. We rate this as widely repeated, not proven for any specific Zeekr pack.

Why LFP is different

  • LFP has a very flat voltage curve4. The car estimates how full the pack is largely from voltage, and on a flat curve that estimate drifts.
  • A full charge lets the battery management system reset its estimate. That is the "calibration" owners talk about23.
  • Some commentators argue frequent 100% charging still adds some wear, and that cycling at a lower average charge level fades less3. Treat that as unsettled.
Why LFP is harder to gauge: voltage vs state of charge Illustrative line chart of cell voltage against state of charge. NMC rises steadily across its 3.0 to 4.2 V operating range. LFP stays nearly flat across most of its 2.5 to 3.65 V range and is steep only at both ends, so the car cannot tell 40% from 70% by voltage alone; a full charge lets the car recalibrate. Shapes are not measured data. CHARGING TO 80% VS 100%: CALIBRATION LFP's flat voltage makes the gauge drift. The car estimates charge largely from voltage. On a flat curve, that estimate wanders. Cell voltage ILLUSTRATIVE SHAPE, NOT MEASURED DATA 2.5 V 3.0 V 3.65 V 4.2 V NMC (dashed) LFP (solid) 0% 40% 70% 100% State of charge 1 2 1 Small voltage change across most of the range, so the car cannot tell 40% from 70% by voltage alone. 2 A full charge lets the car recalibrate. Operating range per cell: NMC 3.0 to 4.2 V; LFP 2.5 to 3.65 V (Battery University).
Illustrative shape, not measured data.

LFP calibration, in practice

  1. Charge to 100% and leave the car plugged in for a short while after it reaches 100% so the pack can balance. (Balancing time is a common owner tip and we found no maker source for a specific duration, so none is given.)
  2. Do this regularly. Tesla's published interval for its LFP cars is at least weekly2.
  3. If the range or percentage figure seems to jump or drift, a full charge is the first thing to try.

Unconfirmed for Zeekr

An Australian retailer guide lists 100% as the typical daily limit for the 75 kWh LFP 7X RWD and tells owners to check the manual6. It is not a Zeekr source.

Rules that apply to both

  • Avoid leaving the car parked at 100% for days where you can. Several sources say prolonged time at a full charge is the main concern3. Time the charge to finish shortly before you drive.
  • Charge to what you need on DC stops. The last part of a fast charge is slow. See AC vs DC and the charging curve and charging etiquette.
  • Do not run it flat. Low-state-of-charge advice is consistent across sources, but we found no Zeekr figure, so none is given.
Sources 6Everything on this page is sourced from the links below.

  1. InsideEVs, "Tesla Recommends Charging Model 3 RWD's LFP Battery To 100%", https://insideevs.com/news/557527/tesla-model3-lfp-charging-recommendations/, accessed 8 November 2026 (search extract only; secondary report of Tesla guidance).

  2. Recurrent, "Do I need to charge my Tesla to 80% or 100%?", https://recurrentauto.com/questions/do-i-need-to-charge-my-tesla-to-80-or-100, accessed 8 November 2026 (search extract only; Tesla's own support page returned an error when fetched).

  3. Eleport, "Should I Charge My EV to 100%? Here's How It Depends on the Battery You Have", https://eleport.com/should-i-charge-my-ev-to-100/, accessed 8 November 2026 (search extract only; commentary, not peer reviewed).

  4. Battery University, "BU-205: Types of Lithium-ion", https://batteryuniversity.com/article/bu-205-types-of-lithium-ion, accessed 8 November 2026.

  5. The Driven, "Reader question: are LFP batteries better than NMC?", https://thedriven.io/2024/11/15/reader-question-are-lfp-batteries-better-than-nmc/, accessed 8 November 2026 (search extract only).

  6. Zecar, "Zeekr 7x RWD charging guide", https://zecar.com/ev-charging-guides/zeekr/7x/rwd, accessed 8 November 2026 (search extract only; retailer, not Zeekr).