{"id":12520,"date":"2025-06-06T04:50:43","date_gmt":"2025-06-06T04:50:43","guid":{"rendered":"https:\/\/glkpower.com\/2025\/06\/06\/is-the-capacity-of-a-power-bank-20000mah-reall-65051560\/"},"modified":"2025-06-06T07:39:49","modified_gmt":"2025-06-06T07:39:49","slug":"is-the-capacity-of-a-power-bank-20000mah-reall-65051560","status":"publish","type":"post","link":"https:\/\/glkpower.com\/hu\/is-the-capacity-of-a-power-bank-20000mah-reall-65051560\/","title":{"rendered":"Is The Capacity Of A Power Bank 20000mAh Really 20000mAh?"},"content":{"rendered":"

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I once heard my friends said she bought a\u00a0power bank\u00a0which disappointed her. She tested it by charging her smartphone and found out that the capacity was not as high as 20,000mAh.So, is the capacity of a\u00a020,000mAh power bank\u00a0as high as 20,000mAh?<\/p>\n

Today, I would like you to know\u00a0the\u00a0consensus in the industry which is\u00a0unknown to the general public\u00a0and some\u00a0knowledge about the power bank.<\/p>\n

It is similar to the fact that you can only get a little over\u00a050GB\u00a0from 64GB memory cards; you can’t get 128GB storage memory from 128GB smartphones.It is a kind of consensus in the industry. Those who do not know it think that they are fooled.\u00a0You won’t complain as long as you know something about it.<\/p>\n

The available power banks have two capacities:1. Battery cell\u00a0capacity.2. Rated capacity.<\/p>\n

The 20,000mAh in the advertisements are about the battery cell capacity. What can be used is the rated capacity.\u00a0There is no doubt that the rated capacity is lower than the battery cell capacity. The difference is enormous, far beyond 100mAh or 200mAh.<\/p>\n

For example, the actual output capacity (rated capacity) of a Merpower 20,000mAh power bank is only 13000mAh.<\/p>\n

The difference is 7000mAh. Don’t the manufacturers fool us?<\/p>\n

Of course not.\u00a0Many factors lead to the difference, among which the most important is the conversion rate.<\/p>\n

As for most power banks, the voltage of each battery cell is 3.7V. When charging a smartphone, the battery voltage should be increased to 5V, so the conversion rate is only 3.7\/5=74%. In addition to other kinds of power consumption, such as the wires and the battery cells, only around 6,000mAh can be used out of 10,000mAh.<\/p>\n

If you can find the capacity on the product, you won’t think that you’re fooled.<\/p>\n

However, the main problem is, due to considerable consumption, most manufacturers only advertise the battery cell capacity of 20,000mAh, without mentioning the rated capacity.<\/p>\n

That’s the reason why many people don’t think the capacity of their power banks is as high as 20,000mAh, and it is the manufacturers to blame.<\/p>\n

Of course, we can’t rule out that quite a few unbranded power banks are falsely tagged. For instance, a 10000mAh one is tagged 20000mAh.\u00a0It is recommended that you\u00a0buy a power bank from famous brands like Merpower & Anker to avoid being fooled.<\/p>\n

Merpower is one of the most powerful manufacturers of\u00a0USB C PD power bank,\u00a0outdoor power source\u00a0and\u00a0car battery jump starter\u00a0in China. China National High-tech Certification Enterprise, Our products are distributed to Europe, North America, Central\/South America, Australia and some other abroad areas. We served some famous brand OEM\/ODM service gained trust from customers. All our products certified with CE,FCC, RoHS,un38.3, MSDS and other approvals.<\/p>","protected":false},"excerpt":{"rendered":"

I once heard my friends said she bought a\u00a0power bank\u00a0which disappointed her. She tested it by charging her smartphone and found out that the capacity was not as high as 20,000mAh.So, is the capacity of a\u00a020,000mAh power bank\u00a0as high as 20,000mAh? Today, I would like you to know\u00a0the\u00a0consensus in the industry which is\u00a0unknown to the […]<\/p>\n","protected":false},"author":1,"featured_media":13074,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56],"tags":[],"class_list":["post-12520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"_links":{"self":[{"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/posts\/12520","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/comments?post=12520"}],"version-history":[{"count":0,"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/posts\/12520\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/media\/13074"}],"wp:attachment":[{"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/media?parent=12520"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/categories?post=12520"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/glkpower.com\/hu\/wp-json\/wp\/v2\/tags?post=12520"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}