In 2025, surely anyone who went anywhere must have a backup battery with him. This can be considered as an indispensable accessory when going out, especially for those who go all day long but have to use phones and tablets continuously to meet the needs of learning and working.
The backup battery market in 2025 is indeed extremely diverse. We had the opportunity to experience and experience many power banks, from compact, minimalist to colorful designs, integrated screen and integrated charging cord. There are even products with extremely pitiful design, super -huge capacity, accompanied by super -huge charging capacity.
Backup battery now has many designs, diverse designs and functions, but the price is also from cheap to expensive and super expensive
However, temporarily putting aside the pitiful models, in this article, we would like to introduce readers a backup battery product suitable for most users, especially young people. This battery has a beautiful design, an emotional icon display, sufficient capacity and enough capacity. And the product we would like to introduce with the name Ugreen UNO 10,000mAh 30W with the name Code PB511.
Fashion appearance, with a unique screen
Ugreen UNO PB511 has an appearance design that is not only compact but also extremely cute. With actual size 116 x 72 x 22mm, the device can be neatly located in the palm of the hand or bag. The crust is complete from hard plastic, neutral tones (gray or purple) and limit decoration details. USB-C cable about 15cm long is integrated directly, inseparable. USB-A and USB-C ports are arranged along one edge, supporting charging simultaneously for three devices.
PB511 backup battery we would like to introduce to readers
The version we have in this article is the purple version, a little pink
The design of this battery is quite beautiful, the overall finish from plastic, rounded the angles, the size is not too large and the weight is also light, can be carried away conveniently
The back of this backup battery we can see a cable attached to the battery
This rope is quite short, only about 15cm, but that is more than enough to use. There is integrated cable very convenient, users do not need to carry a separate cable
In fact, this is a variant of the 10,000mAh UNO backup battery PB764 that we have the opportunity to share with readers. before. However, the PB511 model does not have a flexible kickStand (actually because PB511 does not support wireless charging, so basically this KickSTAND is not very necessary). Compensate, Ugreen Equipped with PB511 an integrated cable about 15cm long extremely convenient.
Many people may think that the “headphone” of this battery can change the vertical angle flexibly similar to the model PB764, but actually it is the fixed part of the battery, it cannot be removed nor can it be changed. This position has a power button to turn on and off the battery
Besides, a visible identification feature is that the TFT screen displays the battery status by the Emoji icon. This symbol cannot be customized, but has the function of indicating the remaining battery and charging status is taking place.
As mentioned, this battery has integrated screen, but not very versatile, simply displaying emoticons corresponding to the remaining battery percentage of the battery only.
There will be 4 emoticons corresponding to the 4 battery levels of this battery, each of the icon will have an additional flashing effect to signal that the phone is being charged
Charging and communication standard
Ugreen PB511 supports two-way fast charging with a maximum capacity of 30W via USB-C port (including integrated cable). According to the published parameters, the device can charge a new iPhone to 60% in about 30 minutes. Besides, the USB-A port is up to 22.5W. The total output capacity when charging multiple devices is at the same time limited to 15W, resulting in a split charging rate.
In addition to the integrated cable, users can also charge through 2 USB-C and USB-A ports at the edge of the battery, in which port C also has a maximum output charging capacity of 30W, and port A is 22.5W. Of course, if charging at the same time, all 3 ports will be divided into capacity, no longer fast charging
Products support many popular protocols such as PD3.0, PPS, QC3.0, FCP and SCP. This increases the level of compatibility with many devices from iPhone to Android phones, tablets and other peripherals.
This battery can charge iPhone at maximum capacity (about 27W)
Charging Android phones also max 30W in PD3.0 standard, can charge both like this
Although the capacity on the shell is 10,000mAh (including 2 cells 5,000mAh/7.2V), the rated capacity at the 5V voltage is about 6,000mAh. When used at higher voltage such as 9V or 15V, the effective capacity drops to about 2,200 – 3,200mAh, depending on the charging mode.
The actual 10,000mAh capacity is not too large but is a sufficient capacity if you use 1 or 2 devices (like 2 phones, or to charge phones, headphones, tablets, sometimes you can charge the MacBook, but it will not be fast charging)
The device integrates multiple protective layers, including over -pressure control, overflow, temperature and short -circuit. In the actual testing process, the case temperature tends to increase slightly when charging at maximum capacity, but does not exceed the abnormal threshold.
Compatible device
Ugreen PB511 is compatible with most smartphones today, including iPhone 11 0 16 Series, Galaxy S/A/Z Fold, Google Pixel 6/7 and devices using PD or QC protocol. In general, all the balls with USB-C port can be charged with this spare battery. The integrated cable allows charging without preparing separate wires, but there is no conversion head to Lightning or MicroUSB. Currently, these two charging standards are not too popular, so if you need it, you can buy more, Ugreen also sells both of these transfers.
Because the integrated wire is USB-C wire, if you need to charge the older iPhone, or the devices using microUSB port, of course, you will have to buy more adapter
Overall, ugreen PB511 is an accessory that meets two factors that young people are interested in today: beautiful design and stable charging efficiency. This is a backup battery that is aimed at a group of users who need a highly portable product, support fast charging, and integrate cable to minimize accessories. The Emoji screen is a different identifying factor, though it does not affect performance. Within 10,000mAh, this device meets basic and medium needs, especially suitable for those who often need fast charging in a short time.
In terms of selling price, Ugreen PB511 has a listing price of about 950,000 VND, which can be a much higher price than the majority of the backup battery with the same capacity and capacity on the market. However, in big sale days, users can “hunt” this product for only more than 800,000 VND for the 10,000mAh version and more than 700,000 VND with a 5,000mAh version (we recommend buying 10,000mAh version for more comfortable use).
Buy cheap Ugreen Uno PB511 backup battery:
• Sale price: ~ 800k
• Buy a sale day for good price, cheap price, remember to apply discount codes
