# Baseus E00311 20,000mAh Power Bank, 45W, Dual Built-In USB-C Cables

Keep phones and other devices powered on commutes or trips with the Baseus power bank, featuring two built-in USB-C cables and 20,000mAh capacity.

- [Original product page](https://www.ofertitastop.com/us/product/baseus-e00311-20-000mah-power-bank)
- [View offer](https://www.ofertitastop.com/us/visit/baseus-e00311-20-000mah-power-bank)
- Market: US
- Language: en-US
- Currency: USD
- Product updated: 2026-10-31T03:07:35.405Z
- Brand: Baseus
- Model: E00311
- EAN / GTIN: 810196184312
- SKU: ofertitastop-us-169477
- Category: Electronics > Electronics Accessories > Power > Batteries > General Purpose Batteries
- Source store: amazon US
- Active deal: Yes
- Price: 29.97 USD
- Previous price: 39.99 USD
- Discount: 25%
- Rating: 4.4 / 5
- Reviews: 3727

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## Description

For travelers and everyday carry users who want a portable battery with charging connections ready to use, the Baseus E00311 combines a 20,000mAh capacity with two built-in USB-C cables.

Its up-to-45W output and four-device charging setup suit busy days when several USB-powered devices need a boost. The smart display also gives you a way to check the power bank’s status.

If your priority is a compact phone charger with cables on hand, this design keeps them built in. If you need a dedicated source of power for a laptop, the manufacturer positions this model for phone charging instead.

## Specifications
- Capacity: 20,000mAh
- Maximum output: 45W
- Charging connections: Two built-in USB-C cables, one USB-C port, and one USB-A port
- Simultaneous charging: Up to four devices
- Color: Black
- Features: Smart display, low-current mode, and CCC certification

The built-in cables reduce the need to pack separate USB-C cables, while the additional USB-C and USB-A ports give you more ways to connect compatible devices. For example, you can charge multiple phones or pair a phone with other USB-powered gear, such as earbuds or a tablet. Charging speed depends on the connected device and its charging protocol, so maximum output can vary by setup.

## Compatibility
This power bank is listed for smartphones, tablets, earbuds, smartwatches, drones, and gaming devices, including iPhone, Samsung Galaxy, Google Pixel, iPad, AirPods, Steam Deck, and ROG Ally models. It has two built-in USB-C cables plus USB-C and USB-A connections, so match the device’s charging input to an available connection. The manufacturer describes its charging use as phone-focused, making it a practical choice for mobile devices rather than a laptop power source.

## Tips for day-to-day use
Keep the power bank in a commuter bag, travel kit, or emergency supply so backup power is close at hand. The two built-in USB-C cables are useful when you want to charge without packing separate cables, and the four charging connections can help when more than one device needs power. Low-current mode is included for compatible low-power accessories. For travel, the manufacturer states that the 20,000mAh capacity is approved for airline carry-on use.

The manufacturer also describes NTC temperature control and protections against overcurrent, overvoltage, overheating, over-discharge, and short circuits. These features are intended to manage charging and power-bank operation as you use it with compatible devices.

Buyer feedback often highlights the compact form, built-in cables, and charging speed. Reports on battery longevity are mixed, with some buyers describing long-lasting use and others reporting that a unit stopped working after a couple of months.

## What to clarify
**Can it charge several devices at once?** Yes. Its two built-in USB-C cables, USB-C port, and USB-A port support charging up to four devices simultaneously.

**Do I need to pack USB-C cables?** The power bank has two built-in USB-C cables. It also provides separate USB-C and USB-A ports for compatible charging connections.

**Can I bring it on a flight?** The manufacturer states that the 20,000mAh power bank is approved for airline carry-on use.

## Should you buy it?
A solid pick if you want portable backup power for phones and other compatible mobile devices, especially when built-in cables and the option to charge several devices matter in your daily routine. Its 20,000mAh capacity, 45W maximum output, and four charging connections bring practical flexibility to commutes, trips, and emergency kits.

## Images

![Baseus E00311 20,000mAh Power Bank, 45W, Dual Built-In USB-C Cables — 1](https://www.ofertitastop.com/i/_0RDYO-705yMNO8eC3lhaenHQCPgJtKi0CzKIypMcw-hE6AGTU-ibCB76Bw7Qh6A2K5cUgu1wXxZSDJOKeR-DrFL6_khaTxA5I2evw-Vv2WtAQz5ckkZ3jsxXw.jpg)

![Baseus E00311 20,000mAh Power Bank, 45W, Dual Built-In USB-C Cables — 2](https://www.ofertitastop.com/i/k20cyZTYLs8ZRKjXDbVTvCa43zlTscbKPa6jFzVGc69SXMiz9MKU1O7F6sn65s3aLYx2vE3yIesHLoZ3f44HdFkuCuCaoTdZF1sus4vHfvOJ4NH_Az56JC32pw.jpg)

![Baseus E00311 20,000mAh Power Bank, 45W, Dual Built-In USB-C Cables — 3](https://www.ofertitastop.com/i/H-JciqM14fghsOE82vdkR2voCKE2y5mCZdfLE8OzUlYuSjYxDQCsn8o0l9q4eOf1y4obRhNpwMHNmKT0rywsBRKmu6YqxvruqseqeW_qcWF-1xok_EaEP2zpiw.jpg)

![Baseus E00311 20,000mAh Power Bank, 45W, Dual Built-In USB-C Cables — 4](https://www.ofertitastop.com/i/O4lab9zsgAXd606CNbiL0GwlhrPBsERxKO14bgEKjTnRfKBCR_iwMHiJy3_lvhE63T_DBiMOppEB_jjKE9_O8wsKvvsZdiQtxZ9FWmTXD6Kusb-CeYktFUzKYg.jpg)

![Baseus E00311 20,000mAh Power Bank, 45W, Dual Built-In USB-C Cables — 5](https://www.ofertitastop.com/i/f23M6DmlZMBygPSP1NTyvbaD2DfxSlq3QX8uezpUJluhVAlhyubtdW_hreBaWACoWuQ82SwD4TC6hbnbAEIvTZI0-aB61AXKFAFqD-uXMZ1g1PoPkLm7cTU6NQ.jpg)