18650batterystore.com website review

frontapp.com costs a phone 1.5 s of main-thread work and 686 KiB of downloads while your page loads. That alone is enough to make taps feel slow. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

A phone's processor spends 9.2 s on main-thread work while loading, 3.7 s of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

8 third-party services load with your homepage (frontapp.com, Klaviyo and loox.io and others), adding 1.0 MB and 2.3 s of main-thread time.

20 long tasks block the main thread while loading, the longest for 1.5 s. During a long task the page ignores taps.

Your mobile performance score is 57 (desktop: 66). Pages that score under 90 lose visitors before the first paint.

About 520 KiB of JavaScript is downloaded but never used on this page.

5 files block the first paint until they finish downloading. Deferring or inlining them could save about 500 ms.

Klaviyo costs a phone 360 ms of main-thread work and 186 KiB of downloads while your page loads. Loading it after the page is usable, or only on the pages that need it, takes that off the critical path.

The page has 2,074 HTML elements. Above 1,500, rendering and every interaction get slower on phones.

About 27 KiB of CSS is downloaded but never applied on this page. Google estimates it would make the page about 150 ms faster on a phone.

28 KiB JavaScript is shipped twice across bundles.

5 files are served with short cache lifetimes, so returning visitors download them again (18 KiB).

Polyfills for old browsers add 18 KiB JavaScript that modern phones do not need.

Critical files load one after another instead of in parallel (3 chains). Preconnecting to key origins and preloading the hero image shortens the chain.

Scripts make the browser recalculate the layout repeatedly while the page loads, which wastes processor time on phones.

Scripts block taps and scrolling for 3.4 s in total while the page loads. Good is under 200 ms.

The page becomes fully interactive after 12.6 s. Good is under 3.8 s.

Your largest element takes 3.3 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “Name-brand cells from Molicel, Samsung, Panasonic, Sony/Mur…”. Most of its time is element render delay (1.6 s).

Visually, the page fills in at 4.6 s (Speed Index). Good is under 3.4 s.

The first text or image appears after 2.3 s on a phone. Good is under 1.8 s.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 82 ms to 79 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 2.5 MB in 188 requests on a phone: scripts 1.2 MB (64), other files 893 KiB (104) and images 147 KiB (7). Under 2 MB keeps phones on slow connections fast.

By the Sustainable Web Design model, a visit to your homepage emits about 0.70 g of CO₂e: 84.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

The homepage links to 226 pages on 18650batterystore.com and 3 external pages.

/customer_authentication/redirect has no <title>, so Google invents the link text in results.

/customer_authentication/redirect is marked noindex but linked from your homepage. If it is meant to be found, remove the noindex.

/customer_authentication/redirect has no meta description, so Google writes the search snippet from whatever text it finds.

/customer_authentication/redirect, /products/samsung-25r-18650, /products/samsung-30q, /products/samsung-35e-18650-3500mah-8a-battery, /products/molicel-p28a and /products/molicel-p30b-18650-3000mah-36a-battery and 1 other have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 67 found) and read each the way a search engine does.

HSTS is set, but max-age is 91 days; one year is the recommended minimum.

1 link go through two or more redirects, for example https://www.18650batterystore.com/customer_authentication/redirect?locale=en&region_country=US.

No Referrer-Policy header, so full URLs can leak to the sites you link to.

No Permissions-Policy header to switch off camera, microphone and location for embedded content.

X-XSS-Protection is set to “1; mode=block”; the header is deprecated and can introduce bugs. Use 0 or remove it.

There is no /.well-known/security.txt telling researchers how to report a security problem to you.

18650batterystore.com's DNS answers are not signed. DNSSEC stops attackers forging them to send visitors or email elsewhere; most registrars switch it on in a click, though most sites still run without it.

Your homepage shows a street address but no LocalBusiness JSON-LD, so Google and AI assistants have to guess your address, hours and phone from the page text.

No analytics or tag manager detected in the HTML, so you can't measure whether any of these fixes work.

The homepage shows no opening hours. If customers visit or call, show when.

There is no link to Google or Apple Maps. A directions link is one tap for a phone visitor.

No guarantee or risk reducer (money-back, free trial, no credit card) is mentioned, which is often what tips a hesitant visitor.

The homepage carries about 2,757 words of visible text.

DMARC is set to p=none, so mail pretending to be 18650batterystore.com is still delivered. Add a report address, check the reports, then move to quarantine.

Email authentication: SPF record 25 points, plus 15 when it ends in -all (10 for ~all); DMARC record 25, plus 25 for a reject policy (15 for quarantine); a DKIM key on a common selector 10.

Before a visitor clicks anything, the page loads Google Ads, Google Analytics, Google Tag Manager and Klaviyo (measured from a US location before any click). No consent tool was detected. Visitors from the EU, UK and several US states must be asked first.

Opening the homepage sets 12 cookies (measured from a US location before any click).

No known cookie consent tool loads with the page. Some sites build their own banner, and some only show one to visitors from the EU.

Loading the homepage contacts 23 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.