battery.com website review

19 files block the first paint until they finish downloading. Deferring or inlining them could save about 3.6 s.

6 files are served with short cache lifetimes, so returning visitors download them again (284 KiB).

About 231 KiB of JavaScript is downloaded but never used on this page. Google estimates it would make the page about 1.1 s faster on a phone.

Your mobile performance score is 56. Pages that score under 90 lose visitors before the first paint.

4 images could be 743 KiB smaller with modern formats (WebP or AVIF) and sizes that fit a phone screen.

67 KiB could be saved by minifying JavaScript.

Hubspot costs a phone 222 ms of main-thread work and 298 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.

A phone's processor spends 2.5 s on main-thread work while loading, 962 ms of it running JavaScript. Above 2 s, taps and scrolls feel sluggish.

6 third-party services load with your homepage (Hubspot, cloudfront.net and AddToAny and others), adding 378 KiB and 355 ms of main-thread time.

About 22 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.

6 long tasks block the main thread while loading, the longest for 165 ms. During a long task the page ignores taps.

Polyfills for old browsers add 13 KiB JavaScript that modern phones do not need. Google estimates it would make the page about 100 ms faster on a phone.

Web fonts hide text while they load. Setting font-display: swap shows text immediately (about 50 ms).

10 KiB could be saved by minifying CSS.

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.

Real Chrome users on phones do not pass Google's Core Web Vitals on this page (28-day field data from the Chrome UX Report (opens in a new tab)). Google uses this in ranking.

Your largest element takes 15.7 s to render on a phone. Google's threshold for “good” is 2.5 s. The largest element is the text “We use cookies and other web tracking technologies such as …”.

The page becomes fully interactive after 16.5 s. Good is under 3.8 s.

The first text or image appears after 5.0 s on a phone. Good is under 1.8 s.

Real visitors wait 3.5 s for the largest content to appear (75th percentile). Good is under 2.5 s.

Real visitors see the first content after 2.4 s (75th percentile). Good is under 1.8 s.

Real visitors wait 1.5 s for your server to start answering (75th percentile). Good is under 800 ms.

Visually, the page fills in at 5.7 s (Speed Index). Good is under 3.4 s.

Scripts block taps and scrolling for 251 ms in total while the page loads. Good is under 200 ms.

7 images have no width and height attributes, so the layout jumps as each one loads.

Over the last 25 four-week periods to 2026-10-24, real Chrome visitors' tap response (inp) went from 102 ms to 104 ms at the 75th percentile (Chrome UX Report (opens in a new tab) history).

Your homepage downloads 21.3 MB in 139 requests on a phone: media 17.3 MB (2), images 3.0 MB (87) and scripts 607 KiB (25). Under 2 MB keeps phones on slow connections fast.

3 images further down the page (685 KiB) download before anyone scrolls to them. Adding loading="lazy" lets the first screen load first.

3 images are downloaded at several times the size a phone draws them, for example WebPT.png at 1,200 px wide, shown at 315 px. Resized copies would save about 260 KiB.

By the Sustainable Web Design model, a visit to your homepage emits about 6.04 g of CO₂e: 725.2 kg a year at 10,000 visits a month. It scales with page weight, so every byte cut lowers it.

7 text elements don't have enough contrast against the background to read easily, especially outdoors on a phone.

2 links inside paragraphs rely on colour alone to stand out.

ARIA dialog and alertdialog nodes should have an accessible name: 1 element on the page fails this check, rated serious by axe-core.

<html> element must have a lang attribute: 1 element on the page fails this check, rated serious by axe-core.

3 images have no alt text, which hurts accessibility and image search.

All page content should be contained by landmarks: 22 elements on the page fail this check, rated moderate by axe-core.

Landmarks should have a unique role or role/label/title (i.e. accessible name) combination: 1 element on the page fails this check, rated moderate by axe-core.

60 visible links have no text or label, so screen readers cannot say where they go.

1 form field has no label, so screen readers announce an empty box and autofill guesses.

The <html> element has no lang attribute, so screen readers may read the page in the wrong voice and accent.

Headings should not be empty: 1 element on the page fails this check, rated minor by axe-core.

Your title is only 16 characters: “Battery Ventures”. Between 30 and 65 characters leaves room to say what you do and for whom.

No Open Graph image, so links shared on LinkedIn, Slack or Facebook show no preview picture.

5 links have no real href, so search engines can't follow them.

1 link use generic text like “click here” or “learn more”, which tells Google nothing about the page behind it.

The homepage links to 160 pages on battery.com and 22 external pages.

/services, /application-software, /consumer, /go-to-market-operator-coaching, /talent-recruiting and /business-development and 3 others have no meta description, so Google writes the search snippet from whatever text it finds.

/company, /people, /about, /blog, /application-software and /infrastructure-software and 8 others have no <h1> headline, so visitors and search engines get no clear main topic.

We fetched 15 pages linked from your homepage (of 85 found) and read each the way a search engine does.

3 errors were logged to the browser console while the page loaded, for example “Failed to load resource: net::ERR_FAILED”.

Large scripts ship without source maps.

No Strict-Transport-Security header, so browsers may still try plain http first on a return visit.

No Content-Security-Policy header, the main browser-side defence against injected scripts.

Neither X-Frame-Options nor a CSP frame-ancestors policy is set, so any site can embed yours in a frame.

X-Content-Type-Options: nosniff is missing, so browsers may guess file types.

1 link go through two or more redirects, for example https://www.microsoft.com/en-us/edge.

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.

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

battery.com has no CAA record, so any certificate authority may issue a certificate for it. A CAA record naming your provider (for example letsencrypt.org) closes that door.

battery.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.

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 778 words of visible text.

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 HubSpot (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 7 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 13 hosts run by other companies (fonts, scripts, analytics, ads), each of which sees the visitor's IP address.