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Quick answer: our top pick is Samsung Battery Pack 20000mAh 45W (20,000 mAh · 45 W Super Fast Charging 2.0 (PPS) · 3 ports).
Best power bank for Samsung Galaxy Z Fold8? One with PPS and 45 W output
Look for a power bank with PPS and 45 W output. The safest choice is the original Samsung 20,000 mAh 45 W or the Baseus QPow3, because both state PPS directly in their descriptions.
Magnetic power banks are out. The Galaxy Z Fold8 and Z Fold8 Ultra have no built-in Qi2 magnets, so a magnetic model will not attach to the phone without a special case.
Both versions charge up to 45 W over a cable and up to 20 W wirelessly. There is no charger in the box, so a power bank with a good cable can also be your main power source when traveling.
PPS: what it does and what happens on regular USB PD
PPS is an extension of the USB PD standard that lets the phone adjust voltage and current on the fly. Samsung uses it to reach full charging speed.
A measurement for the Fold8 Ultra shows that the phone draws the full ca. 40 W only over PPS. On regular USB PD, the same phone draws ca. 24.5 W. This is Ultra data, and we have no such measurement for the standard Fold8, but both models claim up to 45 W, so it is reasonable to assume similar behavior.
In practice, without PPS the phone will still charge, but noticeably slower.
Product descriptions look like this: PPS is stated directly for the Baseus QPow3 and Samsung power banks. INIU, UGREEN and Anker mention USB PD 45 W without any reference to PPS. So we do not claim they have it, but we also do not say they charge slower. If you want certainty, choose a model with PPS in its description.
We selected power banks using three criteria: 45 W output, a capacity of 10,000 or 20,000 mAh, and what the manufacturer states about PPS in the description.
Recommended power banks for Samsung Galaxy Z Fold8
1. Samsung Battery Pack 20000mAh 45W
20,000 mAh · 45 W Super Fast Charging 2.0 (PPS) · 3 ports
Samsung's own power bank with Super Fast Charging 2.0, which means the PPS that Galaxy phones need for full speed. A 5 A USB-C cable is included, three ports.
2. INIU 20000mAh 45W
20,000 mAh · 45 W USB PD · built-in USB-C cable
The number one power bank on Amazon. 20,000 mAh, up to 45 W over USB-C and a built-in cable, so there is no extra cable to carry.
3. UGREEN Nexode 20000mAh 45W
20,000 mAh · 45 W USB PD · built-in cable + USB-C port
A cheaper alternative to the INIU with the same capacity and 45 W. It has a built-in cable and an extra USB-C port, so it charges two devices at once.
4. INIU Ultra Mini 10000mAh 45W
10,000 mAh · 45 W USB PD · USB-C cable included
The second best-selling power bank on Amazon. Small and light, 10,000 mAh for a day out, and 45 W over USB-C is enough for fast charging.
Why not magnetic, and what about cases
Android Central points out that the phone has no built-in Qi2 magnets. Magnetic charging will only work with a case that has magnets.
That is why we do not recommend magnetic power banks in this article. Such a model would require a special case, and wireless charging loses more energy than a cable. On top of that, the Fold8 takes up to 45 W over a cable, but only up to 20 W wirelessly.
The best choice is a regular power bank and a short USB-C cable. Models with a built-in cable, like the INIU or UGREEN from the list, save space in your bag.
If you still want magnetic charging, it is a specific case: you buy a case with magnets and accept a slower charging speed.
Fun fact: The Fold8 charges up to 45 W over a cable, while the Fold7 had 25 W.
10,000 or 20,000 mAh: how many charges, what weight, what on a plane
A rough estimate for the Fold8 (4800 mAh battery): a 20,000 mAh power bank will charge the phone about 3 times, and a 10,000 mAh one about 1.5 times. The Ultra has a 5000 mAh battery, so the result will be slightly lower.
Where does this come from? Power bank capacity is given for 3.7 V cells. Converters lose some of the energy, and according to Anker, about 3/4 of the cell energy reaches the phone. Hence the calculation with a 0.72 multiplier.
Choose 20,000 mAh if you are going away for a weekend or also charge headphones and a second phone. With a Fold, which has a big battery and a large screen, the extra capacity makes a difference.
Choose 10,000 mAh if weight matters. A foldable phone is heavy and thick on its own, so a second heavy item in your pocket quickly gets in the way. The INIU Ultra Mini 10 000 mAh 45 W is a sensible choice for one day out. The smaller Samsung 10 000 mAh (25 W) power bank is sometimes unavailable, which is why the INIU is on the list.
Carry-on luggage: 20,000 mAh is about 74 Wh, and 10,000 mAh is about 37 Wh. Power banks up to 100 Wh can usually be carried only in carry-on luggage, so both sizes qualify. Do not put them in checked luggage.
Fun fact: the cheaper Fold8 has a 4800 mAh battery, and the Ultra has 5000 mAh.
Most common questions about a power bank for the Fold8
Which power bank for Samsung Galaxy Z Fold8?
A power bank with USB-C, 45 W output, and preferably PPS. The original Samsung 20 000 mAh 45 W and the Baseus QPow3 state PPS explicitly. If weight matters more, consider the INIU Ultra Mini 10 000 mAh.
Does the Galaxy Z Fold8 need a power bank with PPS?
To charge at full speed, yes. A measurement for the Fold8 Ultra shows the full ca. 40 W only over PPS, while regular USB PD gives about 24.5 W. We do not have such a measurement for the standard Fold8.
Does the Galaxy Z Fold8 work with a magnetic power bank?
Only with a case that has magnets, because the phone has no built-in Qi2 magnets (Android Central). Wireless charging is limited to 20 W, and the losses are higher than with a cable. That is why we recommend a regular power bank with a cable.
How many times will a 20,000 mAh power bank charge the Galaxy Z Fold8?
According to a rough estimate, about 3 times. Converters lose some of the energy, so about 3/4 of the cell energy reaches the phone. With wireless charging, the result will be worse.
Will a 100 W power bank charge the Galaxy Z Fold8 faster?
No. The Fold8 and Fold8 Ultra charge at up to 45 W, and chargers above that power do not speed up charging. A 100 W power bank will only be heavier and bigger.
See also
- Which charger for Samsung Galaxy Z Fold8 - ranking of compatible chargers
- Best power bank for Google Pixel 10a - 30 W only with PPS
- Best power bank for Galaxy Z Flip8 - pocket-sized or 20,000mAh for trips
- Best power bank for Google Pixel 11 - 30 W PPS and Qi2.2 magnets
Sources
- Samsung: Galaxy Z Fold8 specifications - manufacturer page (samsung.com)
- Samsung Newsroom: Galaxy Z Fold8 Ultra, Fold8 and Flip8 - manufacturer page (news.samsung.com)
- Android Authority: Samsung Galaxy Z Fold 8 charging - industry article (androidauthority.com)
- GSMArena: Samsung Galaxy Z Fold8 review, battery - industry article (gsmarena.com)
- Tom's Guide: Galaxy Z Fold 8, Fold 8 Ultra and Flip 8 battery tests - industry article (tomsguide.com)
- Android Central: will the Galaxy Z Fold 8 support Qi2 magnetic charging - industry article (androidcentral.com)















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