Comparing INIU 20000 mAh to RavPower: Which Offers Better Pass‑Through Charging?

Updated 2026-08-09 · Power Bank Guide

INIU vs RavPower Pass‑Through Charging: What Matters?

The debate over iniu vs ravpower pass through charging often comes down to three core factors: output power, efficiency, and travel friendliness. Both brands offer 20000 mAh models that sit comfortably under the 100‑Wh TSA/FAA limit (74 Wh calculated as 20000 mAh ÷ 1000 × 3.7 V). The key question is how much usable power you actually get and how quickly you can recharge your phone while the bank is also feeding it.

Output Power and Real‑World Charging Speed

The INIU 20000 mAh packs a 22.5 W USB‑C PD output. That translates to 5 V × 4.5 A, 9 V × 2.5 A, or 15 V × 1.5 A. Most modern flagship phones (iPhone 17, Samsung S24, Google Pixel 8, Xiaomi Mi 13) support 18 W or 20 W PD, so the INIU can deliver close to 90 % of the phone’s max PD rate. In contrast, many RavPower 20000 mAh models cap at 18 W or even 12 W, limiting the top‑speed for high‑end devices.

Because pass‑through charging relies on the power bank’s input (USB‑C or micro‑USB) to keep the device running, a 22.5 W output means the INIU can sustain most smartphones’ 5 V/2.4 A charging draw while also pushing the battery at a respectable rate. With a RavPower 18 W bank, the phone may slow to 12 W during pass‑through, especially if the device’s firmware throttles the input to avoid overheating.

Efficiency and Charge Count Calculations

Typical conversion efficiency for a well‑designed 3.7 V Li‑ion power bank is about 60‑70 %. Using 65 % as a mid‑point, the 74 Wh usable energy yields roughly 48 Wh usable for charging. A modern iPhone 17 holds about 4.9 Wh per charge (2200 mAh at 5 V). That means:

1. 48 Wh ÷ 4.9 Wh ≈ 9 full charges.
2. For a 4500 mAh Samsung S24 (≈11 Wh per charge), 48 Wh ÷ 11 Wh ≈ 4.5 charges.
3. A 5000 mAh Google Pixel 8 (≈10 Wh) gives roughly 4.8 charges.
4. A 4000 mAh Xiaomi Mi 13 (≈8 Wh) provides about 6 charges.

The INIU’s higher output and better cable integration (USB‑C to USB‑C and USB‑C to micro‑USB) mean you’ll typically see 10‑12% more real‑world output compared to a RavPower 18 W bank.

Travel‑Friendly Design and Extra Features

Both brands market their 20000 mAh units as pocket‑size, but the INIU’s 1.5 mm aluminum shell gives a more robust feel, while the RavPower model often uses a thinner plastic case. The INIU includes a built‑in flashlight and a USB‑C cable, eliminating the need to carry a spare cable when you’re on the go. For travelers, the ability to fly with the device (under 100 Wh) and the inclusion of a flashlight can be a deciding factor.

When choosing a power bank for travel, also consider:

• Number and type of ports (USB‑C PD vs. USB‑A).
• Weight and dimensions—both stay under 200 g, but the INIU is slightly lighter.
• Durability—metal shells resist drops better.

Which Power Bank Wins the Pass‑Through Battle?

For users who need the fastest possible pass‑through charging on flagship phones, the INIU 20000 mAh 22.5W fast‑charging power bank offers a clear advantage. Its higher output, better cable integration, and flight‑safe 74 Wh capacity make it a reliable choice for both everyday use and travel. The RavPower 20000 mAh is still a solid performer, especially for budget buyers or those who primarily charge older devices that don’t require 18 W PD.

Overall, if you’re looking for the best pass‑through experience in a compact, TSA‑friendly package, the INIU 20000 mAh Portable Charger (Flight‑Safe) is the recommended pick. It delivers near‑maximum PD output, real‑world efficiency, and convenient extras that justify the slightly higher price point.

FAQ

Can I use the INIU 20000 mAh while it’s charging my phone?

Yes. The 22.5 W USB‑C output can sustain most smartphones’ charging draw while simultaneously delivering power to the device’s battery.

Is the INIU 20000 mAh safe to bring on planes?

Yes. With a calculated 74 Wh, it falls below the 100 Wh limit set by most airlines and TSA. Always double‑check your airline’s specific rules before travel.

How many times can I charge an iPhone 17 with the INIU 20000 mAh?

Approximately 9 full charges under typical conditions, factoring in 65 % efficiency. Actual counts may vary slightly based on usage patterns and phone settings.