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Ugreen Nexode 145W 25000mAh: A Power Reserve for Underwater Photographers

Between the deck of a dive boat and the transfer times that separate two dives, power management becomes a constant concern for those who carry a digital arsenal. It's not just a matter of comfort, but a logistical necessity when you need to recharge a laptop, a hybrid housing, and several flash batteries before the next dive. The Ugreen Nexode 145W 25000mAh battery offers a technical solution to this need for power density, while remaining within acceptable dimensions for travelers.

Choosing an external battery for a traveling photographer often begins with calculating the total energy needed. This Ugreen model has a nominal capacity of 25,000 mAh for a total energy of 90 Wh. This figure is strategic. In international air transport, the 100 Wh limit is a major regulatory threshold. By staying below this limit, this unit falls into the category of batteries generally allowed in the cabin without requiring prior authorization from the carrier.It is essential to remember that this theoretical compliance does not exempt you from a thorough inspection. The rules of a specific carrier and the decisions of the relevant authority on site always take precedence over the technical specifications of the product. The battery must absolutely be carried in your carry-on luggage. Its transport in the cargo hold is strictly prohibited due to the risks associated with the chemical stability of lithium. We also recommend protecting the connectors from accidental short circuits during the journey.

The true strength of this device lies in its ability to deliver high power through a single port. Thanks to the Power Delivery 3.1 protocol, the USB-C1 port can provide up to 140W of output. For a user of a 16-inch MacBook Pro, this means a charging speed comparable to the original power adapter. This performance is particularly useful during a short surface interval, where every minute counts for emptying memory cards and preparing equipment for the next dive.The second USB-C port offers 45W of power, while the USB-A port reaches a maximum of 22.5W. When using multiple ports simultaneously, the total combined power reaches 145W. This configuration allows you to charge a power-hungry laptop while also charging a smartphone or action camera. Ugreen has also integrated a low-current mode. By manually activating this function, the user ensures that smaller accessories, such as a dive computer or headphones, will receive a continuous charge without automatic interruption.

In the field, uncertainty is the enemy of organization. Unlike models equipped with simple indicator lights, the Ugreen Nexode 145W features a digital LED display. This display indicates the precise percentage of remaining power, allowing you to anticipate when the battery itself will need to be connected to a power source. This precision is a valuable asset when you need to manage multiple charging cycles for different equipment.The unit's design remains understated, with a housing in shades of dark gray. Its dimensions of 158 x 72 x 28 mm make it a dense object. There is a discrepancy in the technical specifications regarding its weight. While some sources state 513 grams, others indicate 680 grams. For a traveler whose carry-on bag is already close to the allowed weight limit, this difference of nearly 170 grams should be considered during the final weighing of the equipment.

To fill this 90 Wh battery, it accepts an input power of up to 65 W via the USB-C1 port. With a suitable power adapter, a full charge is achieved in approximately two hours. This is a reasonable time for a battery of this capacity, especially if you take advantage of the night to perform this operation in your cabin.

The battery also supports the pass-through charging function. This feature allows the external battery to charge while simultaneously powering another connected device. While convenient for saving outlets on a boat where they are sometimes scarce, this practice can generate additional heat. Therefore, it is important to ensure good ventilation of the unit during these periods of dual thermal stress.

The Ugreen Nexode 145W has physical limitations inherent to its technology. Its actual output capacity at 5V is approximately 14,500 mAh, which differs from the 25,000 mAh of the internal cells due to voltage conversion losses. This standard phenomenon should be considered when planning charging cycles.

Regarding compatibility, some computers that require proprietary charging profiles may not benefit from the maximum charging speed. Its size makes it an accessory that is best kept in a bag. Finally, without a waterproof certification, it is crucial to protect it from splashes of saltwater and humidity on the deck.

To compare this model with all the available options on the market, please consult our power bank comparator tool and our complete selection of diving equipment.

[1]: https://eu.ugreen.com/products/ugreen-145w-power-bank-for-laptop "Official Ugreen Nexode 145W specifications" [2]: https://www.iata.org/en/youandiata/travelers/batteries/ "IATA regulations for lithium batteries" [3]: https://www.faa.gov/hazmat/packsafe/lithium-batteries "FAA guidelines for transporting lithium batteries"