{"id":684,"date":"2026-05-31T20:20:40","date_gmt":"2026-05-31T18:20:40","guid":{"rendered":"https:\/\/e-car.day\/?page_id=684"},"modified":"2026-05-31T20:20:41","modified_gmt":"2026-05-31T18:20:41","slug":"ev-battery-degradation-calculator","status":"publish","type":"page","link":"https:\/\/e-car.day\/?page_id=684","title":{"rendered":"EV Battery Degradation Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"ev-degradation-calc-g37x\">\n\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">EV Battery Degradation Calculator<\/h2>\n\n    <p class=\"eco-tool__lead\">\n      Estimate electric vehicle battery degradation over time based on mileage, charging habits, climate, and charging type.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"ev-degradation-form-g37x\" novalidate>\n\n    <div class=\"eco-tool__grid3\">\n\n      <!-- Battery size -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"deg-battery-g37x\">\n          Battery size<br>(kWh)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"deg-battery-g37x\"\n          type=\"number\"\n          min=\"1\"\n          step=\"1\"\n          value=\"75\"\n          inputmode=\"decimal\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Current usable battery capacity.\n        <\/div>\n      <\/div>\n\n      <!-- Vehicle age -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"deg-age-g37x\">\n          Vehicle age<br>(years)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"deg-age-g37x\"\n          type=\"number\"\n          min=\"0\"\n          max=\"30\"\n          step=\"1\"\n          value=\"5\"\n          inputmode=\"numeric\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Battery degradation increases over time.\n        <\/div>\n      <\/div>\n\n      <!-- Mileage -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"deg-mileage-g37x\">\n          Total mileage<br>(km)\n        <\/label>\n\n        <input\n          class=\"eco-tool__input\"\n          id=\"deg-mileage-g37x\"\n          type=\"number\"\n          min=\"0\"\n          step=\"1000\"\n          value=\"100000\"\n          inputmode=\"numeric\"\n        \/>\n\n        <div class=\"eco-tool__hint\">\n          Higher mileage usually increases battery wear.\n        <\/div>\n      <\/div>\n\n      <!-- Climate -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"deg-climate-g37x\">\n          Climate<br>conditions\n        <\/label>\n\n        <select class=\"eco-tool__input\" id=\"deg-climate-g37x\">\n          <option value=\"0.95\">Cold climate<\/option>\n          <option value=\"1\" selected>Mild climate<\/option>\n          <option value=\"1.10\">Hot climate<\/option>\n          <option value=\"1.18\">Very hot climate<\/option>\n        <\/select>\n\n        <div class=\"eco-tool__hint\">\n          High heat accelerates battery degradation.\n        <\/div>\n      <\/div>\n\n      <!-- Fast charging -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"deg-fastcharge-g37x\">\n          DC fast charging<br>frequency\n        <\/label>\n\n        <select class=\"eco-tool__input\" id=\"deg-fastcharge-g37x\">\n          <option value=\"0.98\">Rarely<\/option>\n          <option value=\"1\" selected>Sometimes<\/option>\n          <option value=\"1.08\">Frequently<\/option>\n          <option value=\"1.15\">Very often<\/option>\n        <\/select>\n\n        <div class=\"eco-tool__hint\">\n          Frequent fast charging may increase battery wear.\n        <\/div>\n      <\/div>\n\n      <!-- Charging habit -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"deg-chargehabit-g37x\">\n          Charging habit<br>\/ battery care\n        <\/label>\n\n        <select class=\"eco-tool__input\" id=\"deg-chargehabit-g37x\">\n          <option value=\"0.95\">Mostly 20\u201380%<\/option>\n          <option value=\"1\" selected>Mixed charging<\/option>\n          <option value=\"1.08\">Often near 100%<\/option>\n          <option value=\"1.15\">Frequent deep cycling<\/option>\n        <\/select>\n\n        <div class=\"eco-tool__hint\">\n          Keeping battery near full charge can increase wear.\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"deg-calc-btn-g37x\">\n        Calculate\n      <\/button>\n\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"deg-reset-btn-g37x\">\n        Reset\n      <\/button>\n\n      <div class=\"eco-tool__error\" id=\"deg-error-g37x\"><\/div>\n\n    <\/div>\n\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"deg-result-g37x\" hidden>\n\n    <h3 class=\"eco-tool__subtitle\">\n      Result\n    <\/h3>\n\n    <div class=\"eco-tool__cards\">\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">\n          Estimated battery health\n        <\/div>\n\n        <div class=\"eco-tool__metric-value\" id=\"deg-health-output-g37x\">\n          \u2014\n        <\/div>\n\n        <div class=\"eco-tool__metric-sub\">\n          Estimated remaining battery capacity.\n        <\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">\n          Estimated degradation\n        <\/div>\n\n        <div class=\"eco-tool__metric-value\" id=\"deg-loss-output-g37x\">\n          \u2014\n        <\/div>\n\n        <div class=\"eco-tool__metric-sub\">\n          Approximate total battery capacity loss.\n        <\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">\n          Remaining usable battery\n        <\/div>\n\n        <div class=\"eco-tool__metric-value\" id=\"deg-usable-output-g37x\">\n          \u2014\n        <\/div>\n\n        <div class=\"eco-tool__metric-sub\">\n          Estimated current usable battery energy.\n        <\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">\n          Battery aging impact\n        <\/div>\n\n        <div class=\"eco-tool__metric-value\" id=\"deg-impact-output-g37x\">\n          \u2014\n        <\/div>\n\n        <div class=\"eco-tool__metric-sub\">\n          Combined effect of mileage, climate, and charging behavior.\n        <\/div>\n      <\/div>\n\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      Approximate estimate only. Real battery degradation depends on chemistry, thermal management, driving conditions, software updates, and manufacturing differences.\n    <\/p>\n\n  <\/div>\n\n  <details class=\"eco-tool__details\">\n\n    <summary class=\"eco-tool__summary\">\n      How we calculate\n    <\/summary>\n\n    <div class=\"eco-tool__details-body\">\n\n      <ul class=\"eco-tool__list\">\n        <li>Battery degradation increases gradually with age and mileage<\/li>\n        <li>Hot climates and frequent fast charging may accelerate wear<\/li>\n        <li>Charging habits strongly influence long-term battery health<\/li>\n        <li>Most modern EV batteries retain significant capacity after many years<\/li>\n      <\/ul>\n\n    <\/div>\n\n  <\/details>\n\n<\/div>\n\n<style>\n.eco-tool{\n  border:1px solid rgba(0,0,0,.12);\n  border-radius:12px;\n  padding:16px;\n}\n\n.eco-tool__header{\n  margin-bottom:12px;\n}\n\n.eco-tool__title{\n  margin:0 0 8px;\n}\n\n.eco-tool__lead{\n  margin:0;\n  opacity:.9;\n}\n\n.eco-tool__form{\n  margin-top:12px;\n}\n\n.eco-tool__grid3{\n  display:grid;\n  grid-template-columns:1fr;\n  gap:16px;\n}\n\n@media (min-width:860px){\n  .eco-tool__grid3{\n    grid-template-columns:1fr 1fr 1fr;\n  }\n}\n\n.eco-tool__field{\n  display:flex;\n  flex-direction:column;\n  gap:6px;\n}\n\n.eco-tool__label{\n  font-weight:600;\n}\n\n.eco-tool__input{\n  width:100%;\n  height:44px;\n  padding:0 12px;\n  border:1px solid rgba(0,0,0,.20);\n  border-radius:10px;\n  background:#fff;\n  box-sizing:border-box;\n  font:inherit;\n}\n\n.eco-tool select.eco-tool__input{\n  appearance:none;\n  -webkit-appearance:none;\n  line-height:44px;\n  padding-right:40px;\n\n  background-image:\n    linear-gradient(45deg, transparent 50%, rgba(0,0,0,.60) 50%),\n    linear-gradient(135deg, rgba(0,0,0,.60) 50%, transparent 50%);\n\n  background-position:\n    calc(100% - 18px) 50%,\n    calc(100% - 12px) 50%;\n\n  background-size:6px 6px;\n  background-repeat:no-repeat;\n}\n\n.eco-tool__hint{\n  font-size:.92em;\n  opacity:.78;\n  min-height:38px;\n}\n\n.eco-tool__actions{\n  display:flex;\n  flex-wrap:wrap;\n  gap:10px;\n  align-items:center;\n  margin-top:16px;\n}\n\n.eco-tool__btn{\n  padding:10px 22px;\n}\n\n.eco-tool__btn--ghost{\n  background:transparent !important;\n  border:1px solid rgba(0,0,0,.20) !important;\n}\n\n.eco-tool__btn--ghost:hover,\n.eco-tool__btn--ghost:focus{\n  background:rgba(0,0,0,.06) !important;\n  border-color:rgba(0,0,0,.35) !important;\n}\n\n.eco-tool__error{\n  min-height:1.2em;\n  font-weight:600;\n  flex:1 1 240px;\n}\n\n.eco-tool__result{\n  margin-top:18px;\n}\n\n.eco-tool__subtitle{\n  margin:0 0 10px;\n}\n\n.eco-tool__cards{\n  display:grid;\n  gap:10px;\n  grid-template-columns:1fr;\n}\n\n@media (min-width:860px){\n  .eco-tool__cards{\n    grid-template-columns:1fr 1fr;\n  }\n}\n\n.eco-tool__card{\n  border:1px solid rgba(0,0,0,.12);\n  border-radius:12px;\n  padding:12px;\n}\n\n.eco-tool__metric-label{\n  opacity:.85;\n  font-weight:600;\n}\n\n.eco-tool__metric-value{\n  font-size:1.7em;\n  font-weight:800;\n  margin-top:6px;\n  line-height:1.1;\n}\n\n.eco-tool__metric-sub{\n  opacity:.85;\n  margin-top:6px;\n}\n\n.eco-tool__note{\n  margin-top:12px;\n  opacity:.9;\n}\n\n.eco-tool__details{\n  margin-top:16px;\n}\n\n.eco-tool__summary{\n  cursor:pointer;\n  font-weight:700;\n}\n\n.eco-tool__details-body{\n  margin-top:10px;\n}\n\n.eco-tool__list{\n  margin:0;\n  padding-left:18px;\n}\n<\/style>\n\n<script>\n(function(){\n\n  const S = \"g37x\";\n\n  const el = (id) => document.getElementById(id + \"-\" + S);\n\n  const batteryEl = el(\"deg-battery\");\n  const ageEl = el(\"deg-age\");\n  const mileageEl = el(\"deg-mileage\");\n  const climateEl = el(\"deg-climate\");\n  const fastChargeEl = el(\"deg-fastcharge\");\n  const habitEl = el(\"deg-chargehabit\");\n\n  const calcBtn = el(\"deg-calc-btn\");\n  const resetBtn = el(\"deg-reset-btn\");\n\n  const errorEl = el(\"deg-error\");\n  const resultEl = el(\"deg-result\");\n\n  const healthOutput = el(\"deg-health-output\");\n  const lossOutput = el(\"deg-loss-output\");\n  const usableOutput = el(\"deg-usable-output\");\n  const impactOutput = el(\"deg-impact-output\");\n\n  function setError(msg){\n    errorEl.textContent = msg || \"\";\n  }\n\n  function fmt(x){\n    return x.toLocaleString(undefined,{\n      minimumFractionDigits:1,\n      maximumFractionDigits:1\n    });\n  }\n\n  function calculate(){\n\n    setError(\"\");\n\n    const battery = Number(batteryEl.value);\n    const age = Number(ageEl.value);\n    const mileage = Number(mileageEl.value);\n\n    const climateFactor = Number(climateEl.value);\n    const fastFactor = Number(fastChargeEl.value);\n    const habitFactor = Number(habitEl.value);\n\n    if(\n      !Number.isFinite(battery) || battery <= 0 ||\n      !Number.isFinite(age) || age < 0 ||\n      !Number.isFinite(mileage) || mileage < 0\n    ){\n      setError(\"Please enter valid values.\");\n      resultEl.hidden = true;\n      return;\n    }\n\n    const ageLoss =\n      age * 1.8;\n\n    const mileageLoss =\n      mileage \/ 25000;\n\n    let totalLoss =\n      (ageLoss + mileageLoss) *\n      climateFactor *\n      fastFactor *\n      habitFactor;\n\n    totalLoss =\n      Math.min(totalLoss, 45);\n\n    const health =\n      100 - totalLoss;\n\n    const usableBattery =\n      battery * (health \/ 100);\n\n    let impact = \"Low\";\n\n    if(totalLoss >= 10) impact = \"Moderate\";\n    if(totalLoss >= 20) impact = \"High\";\n    if(totalLoss >= 30) impact = \"Very high\";\n\n    healthOutput.textContent =\n      fmt(health) + \"%\";\n\n    lossOutput.textContent =\n      \"-\" + fmt(totalLoss) + \"%\";\n\n    usableOutput.textContent =\n      fmt(usableBattery) + \" kWh\";\n\n    impactOutput.textContent =\n      impact;\n\n    resultEl.hidden = false;\n  }\n\n  function reset(){\n\n    setError(\"\");\n\n    batteryEl.value = \"75\";\n    ageEl.value = \"5\";\n    mileageEl.value = \"100000\";\n    climateEl.value = \"1\";\n    fastChargeEl.value = \"1\";\n    habitEl.value = \"1\";\n\n    resultEl.hidden = true;\n  }\n\n  calcBtn.addEventListener(\"click\", calculate);\n  resetBtn.addEventListener(\"click\", reset);\n\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>EV Battery Degradation Calculator Estimate electric vehicle battery degradation over time based on mileage, charging habits, climate, and charging type. Battery size(kWh) Current usable battery capacity. Vehicle age(years) Battery degradation&hellip;<\/p>\n","protected":false},"author":25,"featured_media":0,"parent":652,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/684"}],"collection":[{"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/e-car.day\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=684"}],"version-history":[{"count":1,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/684\/revisions"}],"predecessor-version":[{"id":685,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/684\/revisions\/685"}],"up":[{"embeddable":true,"href":"https:\/\/e-car.day\/index.php?rest_route=\/wp\/v2\/pages\/652"}],"wp:attachment":[{"href":"https:\/\/e-car.day\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=684"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}