Methodology
In May 2026, West Coast Labs carried out an independent, four-part evaluation of NordVPN’s battery impact on mobile devices. The testing covered two major mobile platforms — Android and iOS — across six devices, including the Samsung Galaxy S24, Galaxy S25 Ultra, Google Pixel 9, iPhone 15, iPhone 16, and the latest iPad.
Along with evaluating the estimates provided by devices, WCL connected hardware instruments directly to every tested device to measure the actual electricity leaving the battery. This method was chosen to help separate the battery power the devices “claim” a VPN uses from the amount they actually use. This evaluation ran through four test series, successfully completing all scheduled sessions.
What are the results?
The West Coast Labs report showed that NordVPN had no significant impact on battery life across every test, on both Android and iOS.
Smoke and (black) mirrors
When you open your phone’s battery settings with a VPN running, you’ll often see the VPN app sitting right at the top of the battery usage list. In its research, WCL recorded the battery screen attributing around 49% of session usage to NordVPN, making it look like the single biggest drain on the device. However, upon a closer look, these numbers seem to be far from the truth.
According to WCL research, power consumption measured at the hardware level showed that NordVPN’s real overhead during a one-hour stream was just 1.6-2.1% on both Android and iOS. Based on these results, the gap between the suggested 49% and the actual measurements indicates that what you see in your phone’s battery settings isn’t a VPN-caused drain. Instead, it’s an ordinary streaming battery usage simply relabeled by the device’s operating system.
The reason VPN apps seem to be the biggest battery consumers is their traffic routing. When a VPN is on, all your internet traffic is routed through it, so both Android and iOS attribute the battery cost of streaming a video, loading a page, or checking email to the VPN app — even though you’d use that exact same battery power without a VPN. In other words, the phone is counting traffic instead of measuring power.
Network switching costs barely register
VPNs sometimes get a bad rap for heavy battery use during commutes, when a phone repeatedly drops and reconnects between Wi-Fi and mobile data. There’s a grain of truth here, since re-establishing the encrypted tunnel (key exchange and authentication) is one of the more resource-intensive moments for a VPN.
However, WCL’s commuter simulation shows it’s a tiny, momentary cost rather than a sustained drain. According to the research, a full two-hour commute with NordVPN’s default protocol (NordLynx — a proprietary implementation of WireGuard®) uses only around 5% more battery than the same trip without a VPN, which works out to less than 1% of total battery capacity. NordVPN also maintains a reconnection success rate above 99% during network transitions on both Android and iOS.
Modern technology, modern efficiency
The first VPN protocols were designed in an era when mobile efficiency wasn’t a primary consideration, so their architecture is hardly comparable to modern alternatives like WireGuard®. NordVPN’s default protocol, NordLynx, tells a very different story, though. According to the WCL tests, NordLynx used 31% less battery per unit of data than OpenVPN on Android and 24% less on iOS.
This difference comes down to the VPN protocols. NordVPN's NordLynx — one of the best and most lightweight VPN protocols available today — is a proprietary implementation built on WireGuard®, designed to provide quick connection while maintaining robust encryption. The protocol uses fewer resources to move the same amount of data, making it faster than older VPN protocols.
These results also suggest the “VPNs drain your battery” argument is simply based on older software rather than the current results.
All-day use, no meaningful battery cost
Finally, WCL ran a full scripted day (sleep, commute, work, and home) to test how VPN usage affects phone battery. After testing a phone with the VPN both on and off, the results showed that keeping NordVPN on continuously for 24 hours added just 1.4% to daily battery use on Android and 1.8% on iOS.
In practical terms, that’s the equivalent of needing to charge your phone about half a day earlier over the course of a month — a difference that falls well within the everyday variation caused by temperature, signal strength, and app behavior. These results only strengthen the notion that NordVPN has a minimal impact on your phone battery.
To see the complete breakdown of every test, read the full WCL report.
The big picture
Based on the WCL report, the “VPNs kill your battery” warning is a myth, which mostly stems from misinterpreted statistics. Your phone’s battery screen does put the blame for high usage on your VPN, but it’s measuring the wrong thing. The true battery consumption is significantly lower than what on-screen indicators suggest, and WCL testing proves it.
Extensive testing shows you can keep NordVPN on all day without worrying about significant battery consumption. You also don’t need to toggle the VPN off or pause the connection (a feature that’s available on NordVPN) to “save power” — and then forget to switch it back on right when you connect to risky public Wi-Fi. Leaving NordVPN and its NordLynx protocol enabled means ongoing protection with minimal impact on your device’s battery or performance.
NordVPN’s value doesn’t end there. The service offers advanced safety features such as scam and phishing protection, Meshnet, and call and message protection — a feature that warns you about potential scam calls and messages before you answer. Based on your preferences, you can choose different service plans, best suited to your needs, with a 30-day money-back guarantee for new subscriptions.
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