{"id":284890,"date":"2026-08-04T15:49:04","date_gmt":"2026-08-04T13:49:04","guid":{"rendered":"https:\/\/www.heiwit.com\/?p=284890"},"modified":"2026-08-04T16:33:06","modified_gmt":"2026-08-04T14:33:06","slug":"compararea-preturilor-bateriilor-de-stocare","status":"publish","type":"post","link":"https:\/\/www.heiwit.com\/ro\/confrontare-prezzi-batteria-accumulo\/","title":{"rendered":"Cum se compar\u0103 cu adev\u0103rat pre\u021burile unei baterii de stocare"},"content":{"rendered":"<p><strong>Dou\u0103 baterii cu acela\u0219i pre\u021b de list\u0103 pot ajunge, la sf\u00e2r\u0219itul duratei lor de via\u021b\u0103, s\u0103 coste dublu una fa\u021b\u0103 de cealalt\u0103.<\/strong> Nu este un paradox: este ceea ce se \u00eent\u00e2mpl\u0103 atunci c\u00e2nd se compar\u0103 pre\u021bul de achizi\u021bie \u00een loc de costul energiei pe care bateria respectiv\u0103 va reu\u0219i efectiv s\u0103 o stocheze \u0219i s\u0103 o restituie \u00een timp.<\/p>\n\n<p>Este compara\u021bia pe care instalatorii sunt nevoi\u021bi s\u0103 o fac\u0103 de fiecare dat\u0103 c\u00e2nd prezint\u0103 o ofert\u0103, adesea \u00een fa\u021ba unui client care se uit\u0103 doar la suma de la sf\u00e2r\u0219itul paginii. Aici \u00eencerc\u0103m s\u0103 enumer\u0103m cele patru cifre care conteaz\u0103 cu adev\u0103rat, iar la final ve\u021bi g\u0103si un calculator cu care s\u0103 face\u021bi acest lucru pentru propriile voastre oferte.<\/p>\n\n<h2>Pre\u021bul de list\u0103 nu indic\u0103 c\u00e2t cost\u0103 energia<\/h2>\n\n<p>O baterie nu se cump\u0103r\u0103 pentru a o de\u021bine: se cump\u0103r\u0103 pentru cantitatea de energie pe care o va transmite prin interiorul ei \u00eenainte de a-\u0219i pierde utilitatea. Criteriul corect, a\u0219adar, nu este euro pe kilowatt-or\u0103 <em>nominal\u0103<\/em>, dar euro pe kilowatt-or\u0103 <em>efectiv parcurs<\/em> pe durata de via\u021b\u0103 a sistemului.<\/p>\n\n<p>Pentru a ajunge la acest rezultat sunt necesare patru date, pe care orice fi\u0219\u0103 tehnic\u0103 serioas\u0103 le men\u021bioneaz\u0103.<\/p>\n\n<h3>1. Capacitatea nominal\u0103<\/h3>\n<p>Kilowa\u021bii-or\u0103 declara\u021bi. Este cifra la care se uit\u0103 toat\u0103 lumea, dar este \u0219i cea mai pu\u021bin informativ\u0103 dintre cele patru, deoarece, luat\u0103 separat, nu indic\u0103 c\u00e2\u021bi dintre ace\u0219ti kilowa\u021bi-or\u0103 sunt efectiv utilizabili.<\/p>\n\n<h3>2. Ad\u00e2ncimea de desc\u0103rcare (DoD)<\/h3>\n<p>Procentul din capacitate care poate fi utilizat efectiv f\u0103r\u0103 a deteriora celulele. O baterie de 10 kWh cu un grad de desc\u0103rcare (DoD) de 80% pune la dispozi\u021bie 8 kWh pe ciclu, nu 10. Aceasta este diferen\u021ba dintre capacitatea declarat\u0103 \u0219i capacitatea disponibil\u0103, iar \u00eentr-o compara\u021bie \u00eentre dou\u0103 produse, valoarea real\u0103 poate reprezenta 20% din valoarea declarat\u0103.<\/p>\n\n<h3>3. Num\u0103rul de cicluri<\/h3>\n<p>C\u00e2te cicluri complete de \u00eenc\u0103rcare \u0219i desc\u0103rcare suport\u0103 bateria \u00eenainte de a ajunge la sf\u00e2r\u0219itul duratei de via\u021b\u0103 utile. Aten\u021bie: <strong>un num\u0103r de cicluri f\u0103r\u0103 capacitatea rezidual\u0103 la care se refer\u0103 nu \u00eenseamn\u0103 nimic<\/strong>. A spune \u201c6.000 de cicluri\u201d \u00eenseamn\u0103 acela\u0219i lucru cu a spune \u201care o durat\u0103 lung\u0103 de via\u021b\u0103\u201d: \u00eentrebarea corect\u0103 este <em>6.000 de cicluri p\u00e2n\u0103 la ce procent din capacitatea rezidual\u0103?<\/em><\/p>\n\n<h3>4. Capacitatea rezidual\u0103 la sf\u00e2r\u0219itul ciclului de via\u021b\u0103<\/h3>\n<p>C\u00e2t r\u0103m\u00e2ne, \u00een procente, odat\u0103 ce ciclurile declarate s-au epuizat. Acest lucru are dou\u0103 scopuri: s\u0103 permit\u0103 compararea num\u0103rului de cicluri \u0219i s\u0103 estimeze energia medie efectiv disponibil\u0103 pe \u00eentreaga durat\u0103 de via\u021b\u0103 a sistemului, care se situeaz\u0103 la jum\u0103tatea distan\u021bei dintre capacitatea ini\u021bial\u0103 \u0219i cea final\u0103.<\/p>\n\n<h2>Formula<\/h2>\n\n<p>Luate \u00eempreun\u0103, cele patru cifre indic\u0103 energia total\u0103 pe care bateria o va acumula pe parcursul ciclurilor sale de via\u021b\u0103:<\/p>\n\n<blockquote><p><strong>Energie total\u0103 = capacitate \u00d7 DoD \u00d7 cicluri \u00d7 degradare medie<\/strong><br>\nunde degradarea medie reprezint\u0103 media dintre 100% \u0219i capacitatea rezidual\u0103 declarat\u0103.<\/p><\/blockquote>\n\n<p>\u0218i de aici rezult\u0103 cifra care conteaz\u0103:<\/p>\n\n<blockquote><p><strong>Costul pe kWh ponderat = pre\u021b \u00f7 energie total\u0103<\/strong><\/p><\/blockquote>\n\n<p>Este un calcul care se face \u00een treizeci de secunde \u0219i care r\u0103stoarn\u0103 multe compara\u021bii. Iat\u0103 calculatorul: introduce\u021bi datele bateriei pe care o evalua\u021bi \u00een partea st\u00e2ng\u0103 \u0219i compara\u021bi-le cu cele ale bateriei noastre din partea dreapt\u0103.<\/p>\n\n<div id=\"heiwit-calc\" style=\"border:1px solid #e3e3e3;border-radius:12px;padding:24px;margin:32px 0;background:#fafafa;font-family:inherit\">\n  <div style=\"display:flex;flex-wrap:wrap;gap:24px\">\n\n    <div style=\"flex:1 1 260px;min-width:260px\">\n      <h4 style=\"margin:0 0 16px;font-size:17px\">Bateria pe care o ave\u021bi \u00een vedere<\/h4>\n      <label style=\"display:block;font-size:13px;color:#555;margin-bottom:4px\">Pre\u021b (\u20ac, f\u0103r\u0103 TVA)<\/label>\n      <input id=\"a_prezzo\" type=\"number\" min=\"0\" step=\"1\" placeholder=\"de ex. 4500\" style=\"width:100%;padding:9px;border:1px solid #ccc;border-radius:7px;margin-bottom:12px;box-sizing:border-box\">\n      <label style=\"display:block;font-size:13px;color:#555;margin-bottom:4px\">Capacitate nominal\u0103 (kWh)<\/label>\n      <input id=\"a_cap\" type=\"number\" min=\"0\" step=\"0.1\" placeholder=\"ex. 10\" style=\"width:100%;padding:9px;border:1px solid #ccc;border-radius:7px;margin-bottom:12px;box-sizing:border-box\">\n      <label style=\"display:block;font-size:13px;color:#555;margin-bottom:4px\">Ad\u00e2ncimea de scobire (DoD) (%)<\/label>\n      <input id=\"a_dod\" type=\"number\" min=\"1\" max=\"100\" step=\"1\" placeholder=\"ex. 80\" style=\"width:100%;padding:9px;border:1px solid #ccc;border-radius:7px;margin-bottom:12px;box-sizing:border-box\">\n      <label style=\"display:block;font-size:13px;color:#555;margin-bottom:4px\">Cicluri declarate<\/label>\n      <input id=\"a_cicli\" type=\"number\" min=\"1\" step=\"100\" placeholder=\"de ex. 6000\" style=\"width:100%;padding:9px;border:1px solid #ccc;border-radius:7px;margin-bottom:12px;box-sizing:border-box\">\n      <label style=\"display:block;font-size:13px;color:#555;margin-bottom:4px\">Capacitate rezidual\u0103 la sf\u00e2r\u0219itul ciclului de via\u021b\u0103 (%)<\/label>\n      <input id=\"a_res\" type=\"number\" min=\"0\" max=\"100\" step=\"1\" placeholder=\"ex. 70\" style=\"width:100%;padding:9px;border:1px solid #ccc;border-radius:7px;box-sizing:border-box\">\n    <\/div>\n\n    <div style=\"flex:1 1 260px;min-width:260px\">\n      <h4 style=\"margin:0 0 16px;font-size:17px\">Heiwit NA+ cu ioni de sodiu<\/h4>\n      <label style=\"display:block;font-size:13px;color:#555;margin-bottom:4px\">Pre\u021b (\u20ac, f\u0103r\u0103 TVA)<\/label>\n      <input id=\"b_prezzo\" type=\"number\" min=\"0\" step=\"1\" placeholder=\"introduce\u021bi pre\u021bul pe care vi l-am indicat\" style=\"width:100%;padding:9px;border:1px solid #ccc;border-radius:7px;margin-bottom:16px;box-sizing:border-box\">\n\n      <div style=\"background:#fff;border:1px solid #e3e3e3;border-radius:8px;padding:4px 14px\">\n        <div style=\"display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #f2f2f2\">\n          <span style=\"font-size:14px;color:#555\">Capacitate nominal\u0103<\/span>\n          <strong style=\"font-size:14px\"><span id=\"b_cap\">10<\/span> kWh<\/strong>\n        <\/div>\n        <div style=\"display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #f2f2f2\">\n          <span style=\"font-size:14px;color:#555\">Ad\u00e2ncimea de desc\u0103rcare<\/span>\n          <strong style=\"font-size:14px\"><span id=\"b_dod\">91<\/span>%<\/strong>\n        <\/div>\n        <div style=\"display:flex;justify-content:space-between;padding:11px 0;border-bottom:1px solid #f2f2f2\">\n          <span style=\"font-size:14px;color:#555\">Cicluri declarate<\/span>\n          <strong style=\"font-size:14px\"><span id=\"b_cicli\">6500<\/span><\/strong>\n        <\/div>\n        <div style=\"display:flex;justify-content:space-between;padding:11px 0\">\n          <span style=\"font-size:14px;color:#555\">Capacitate rezidual\u0103 la sf\u00e2r\u0219itul ciclului de via\u021b\u0103<\/span>\n          <strong style=\"font-size:14px\"><span id=\"b_res\">70<\/span>%<\/strong>\n        <\/div>\n      <\/div>\n      <p style=\"margin:10px 0 0;font-size:12px;color:#888\">Date din fi\u0219a tehnic\u0103: nu pot fi modificate, deoarece sunt ale noastre.<\/p>\n    <\/div>\n  <\/div>\n\n  <div id=\"calc_out\" style=\"margin-top:24px;padding:20px;border-radius:10px;background:#fff;border:1px solid #e3e3e3\">\n    <p style=\"margin:0;color:#777\">Completa\u021bi c\u00e2mpurile pentru a vedea compara\u021bia: este suficient s\u0103 introduce\u021bi pre\u021bul, capacitatea, DoD, num\u0103rul de cicluri \u0219i capacitatea rezidual\u0103.<\/p>\n  <\/div>\n\n  <p style=\"margin:16px 0 0;font-size:12px;color:#888\">Calculul ia \u00een considerare energia total\u0103 consumat\u0103 pe durata de via\u021b\u0103 declarat\u0103, presupun\u00e2nd o degradare liniar\u0103 \u00eentre capacitatea ini\u021bial\u0103 \u0219i capacitatea rezidual\u0103. Nu \u021bine cont de eficien\u021ba de conversie, costurile de instalare, \u00eenlocuirile sau valoarea rezidual\u0103: serve\u0219te la compararea a dou\u0103 produse pe aceea\u0219i baz\u0103 de referin\u021b\u0103, nu la estimarea costurilor unei instala\u021bii.<\/p>\n<\/div>\n\n<h2>La ce se uit\u0103 un instalator, \u00een afar\u0103 de num\u0103r?<\/h2>\n\n<p>Costul pe kilowatt-or\u0103 ajustat este modalitatea corect\u0103 de a compara dou\u0103 produse, dar nu acoper\u0103 \u00een totalitate alegerea. Trei elemente nu sunt incluse \u00een formul\u0103 \u0219i au o pondere egal\u0103 sau mai mare dec\u00e2t acea cifr\u0103.<\/p>\n\n<p><strong>Securitatea.<\/strong> Este prima \u00eentrebare pe care o pune clientul final c\u00e2nd i se spune c\u0103 sistemul de stocare va fi instalat \u00een cas\u0103 sau \u00een garaj. Tehnologia pe baz\u0103 de sodiu nu utilizeaz\u0103 litiu, cobalt sau nichel, iar acest lucru schimb\u0103 cu totul discu\u021bia.<\/p>\n\n<p><strong>Asisten\u021ba.<\/strong> O baterie care \u021bine dou\u0103zeci de ani are sens doar dac\u0103 produc\u0103torul r\u0103spunde la telefon timp de dou\u0103zeci de ani. Merit\u0103 s\u0103 \u00eentrebi unde se afl\u0103 centrul de service \u0219i cine \u00eel administreaz\u0103.<\/p>\n\n<p><strong>Garan\u021bia.<\/strong> Nu durata declarat\u0103, ci ce anume acoper\u0103 exact \u0219i cine \u00ee\u0219i asum\u0103 aceast\u0103 responsabilitate: produc\u0103torul, importatorul sau distribuitorul.<\/p>\n\n<h2>\u00cen rezumat<\/h2>\n\n<p>A compara dou\u0103 sisteme de stocare pe baza pre\u021bului de list\u0103 este ca \u0219i cum ai compara dou\u0103 ma\u0219ini pe baza pre\u021bului unui plin. Cifra care trebuie prezentat\u0103 clientului este c\u00e2t cost\u0103 fiecare kilowatt-or\u0103 pe care bateria respectiv\u0103 \u00eel va furniza pe durata de via\u021b\u0103 a acesteia. \u00cen majoritatea cazurilor, aceasta este chiar cifra care face ca o op\u021biune aparent mai scump\u0103 s\u0103 fie de fapt cea mai avantajoas\u0103 dintre cele dou\u0103.<\/p>\n\n<p><em>Sunte\u021bi instalatori \u0219i dori\u021bi lista de pre\u021buri rezervat\u0103 sau o compara\u021bie a cifrelor dvs.? <a href=\"https:\/\/installatori.heiwit.com\">Scrie\u021bi-ne din sec\u021biunea dedicat\u0103 instalatorilor<\/a>.<\/em><\/p>\n<script src=\"\/wp-content\/uploads\/heiwit-calc.js?v=2\" defer><\/script>","protected":false},"excerpt":{"rendered":"<p>Pre\u021bul de list\u0103 nu indic\u0103 c\u00e2t cost\u0103 energia. Cele patru cifre pe care trebuie s\u0103 le ave\u021bi \u00een vedere, formula pentru a le combina \u0219i un calculator care v\u0103 permite s\u0103 face\u021bi acest lucru pentru ofertele voastre.<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","content-type":"","footnotes":""},"categories":[122],"tags":[],"class_list":["post-284890","post","type-post","status-publish","format-standard","hentry","category-studi-e-ricerche"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Come si confrontano davvero i prezzi di una batteria di accumulo - Heiwit - Batterie agli ioni di Sodio<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.heiwit.com\/ro\/compararea-preturilor-bateriilor-de-stocare\/\" \/>\n<meta property=\"og:locale\" content=\"ro_RO\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Come si confrontano davvero i prezzi di una batteria di accumulo - Heiwit - Batterie agli ioni di Sodio\" \/>\n<meta property=\"og:description\" content=\"Il prezzo di listino non dice quanto costa l&#039;energia. 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