Samsung Galaxy S9 & S9 Plus are flagship-class phones with battery capacities of 3000 mAh & 3500 mAH respectively. Both phones support 15-watt Samsung Adaptive fast-charging via USB-C which charges them from zero to 50% in 30 minutes. Best portable chargers for Samsung Galaxy S9 or S9+ support the 15-watt fast-charging mode via the USB-C port and charge the phones as fast as the included wall charger. They should also support fastest charging for latest Samsung phones such as S22/S21 series, A73/72, A53/A52 etc. when you upgrade in future.
Here is our selection of the best portable chargers for Samsung Galaxy S9 and S9 Plus –
Best Portable Charger for Samsung Galaxy S9 and S9 Plus (Overall)
Anker PowerCore Slim 10000 USB-C PD 20-watt Power Bank
Anker’s PowerCore Slim 10000 USB-C PD is an all-rounder fast-charging power bank for Samsung S9 & S9+ as it is lightweight, slim, robust, and charges S9 at its maximum possible charging speed. The portable charger will fast-charge the Samsung S9 or S9 Plus from zero to 50% in about 30 minutes and charges
- Samsung S9 from zero to 100% two times
- S9 from 30% to 100% three times.
- S9 Plus from 30% to 100% nearly three times
Besides the S9 & S9+ , the PowerCore Slim 10000 USB-C PD will also fast-charge other latest Samsung phones (S22/S21/S20 series, Note 20/10 series, S10, S10 Plus, S9 Plus, S8, S8 Plus, S7, etc.) as it supports Samsung Adaptive Fast Charging, and charges all these phones minimum two times.
The portable charger has a weight of 6.8 oz (200 grams) which makes it light for its battery capacity. It has dimensions of 5.4 x 2.6 x 0.6in (13.7 x 6.6 x 1.6 cm). It is very pocketable due to its slim narrow design.
The powerbank gets charged via the USB-C port. It takes about 5 hours for PowerCore Slim 10000 PD to get recharged with the Samsung S9 or s9 Plus charger or any other USB-C PD or QuickCharge 3.0 charger. The portable charger comes with a free USB-C to USB-C cable.
For charging iPhones and old Android phones, PowerCore Slim 10000 PD supports 2.4 amp charging and hence, can fast-charge all iPhones at twice the speed (zero to 50% in 40-50 minutes) of the Apple iPhone charger, which delivers just 1 amp.
PowerCore Slim 10000 USB-C PD 20-watt Pros
- Two full charges for Samsung S9
- Powers up the Samsung S9 & S9+ from empty to half in about 30 minutes
- Weighs 6.8 oz (200 grams), light in weight
- Fast charges latest S22, S21, S20, A series at 18-watts.
- Gets recharged directly via USB-C port with Samsung S9 charger or any QuickCharge 3.0 charger in about 5 hours
- Fast-charges other latest Samsung phones from zero to half in about 30-40 minutes
- Fast charges latest iPhone 13, 12, 11, 11 Pro, XR, XS etc. from zero to 60% charge in about 30 minutes
- Slim design
- Sturdy premium build
- USB-C to USB-C cable included for directly fast-charging the S9 & S9+
Cons
- None
Best USB-C Portable Charger for Samsung Galaxy S9/S9+ for charging Two phones at a time
ZMI Powerpack 10000 USB-C PD 18-watt power bank
ZMI Powerpack 10000 USB-C is a recently launched power bank that features total 29-watt output with 18-watt USB-C PD fast-charging or 12 watt USB output. It has a premium build and a long narrow design. ZMI Powerpack 10000 USB-C fast-charges the Samsung S9 & S9+ from zero to 50% in about 30 minutes via USB-C PD. The large battery size of 10000 mAh allows it to charge –
- Samsung S9 from zero to 100% two times
- S9 from 30% to 100% three times.
- S9 Plus from 30% to 100% about three times
The power bank gets charged via the USB-C port. Any 18-watt USB-C PD charger or the S9/S9+ charger will charge the ZMI Powerpack 10000 USB-C in about 5 hours.
ZMI Powerpack 10000 USB-C PD is future-ready as it supports 18-watt USB-C PD, which is the preferred fast charging standard for almost all upcoming Samsung/Android phones and iPhones. It will charge all latest iPhones including the iPhone 13/12 series, 11, 11 Pro/Max, XS/XR/X/8 and latest Samsung/Android phones from empty to half in about 30-40 minutes. It will also charge the earlier iPhones (7, 7 Plus and older) from zero to 50% in about 40-50 minutes and older Samsung/Android phones in about 50-55 minutes.
The power bank has two ports – a USB-C and a regular USB port – that enable it to charge both iPhones and Androids. You can fast charge USB-C PD phones via USB-C PD port or charge older iPhones/Android phones via the regular USB port at maximum speed of 12-watts. You can also charge via both ports at once though in this mode combined output is reduced to 15-watts.
The ZMI Powerpack 10000 USB-C portable charger has a fresh compact and narrow design with textured outer skin. The new design feels much better in the hand and is also much more pocketable as well. ZMI Powerpack 10000 USB-C weighs 6.8 oz (192 grams) and has dimensions of 5.82 x 2.8 x .55 inches (14 x 7.0 x 1.4 cms).
ZMI Powerpack 10000 USB-C Pros
- Fast-charges Samsung Galaxy S9 & S9+ from zero to 50% in about 30 minutes
- 10000 mAh battery capacity charges Samsung S9 from 20% to 100% three times
- Fast charges latest Samsung phones such as S22, S21, S20 series etc. at 18-watts
- Fast-charges all iPhones at their maximum charging speed
- Fast charges new iPhones (13/12 series, 11, 11 Pro, XS/XR/X/8/8+) from zero to 50% in about 30 minutes
- Charges two devices at once at fast speeds (18 watt USB-C + 11 watts USB)
- Gets fully charged in 5 hours by any 18-watt USB-C PD charger or S9 charger
- Light and compact
- Premium feel and build quality
- Slim
- Comes with a USB-C to USB-C cable and a USB/USB-C cable. You do not have to buy any extra cable to fast-charge the S9 with the portable charger.
Cons
- None
Best High-Capacity Power Bank for Samsung Galaxy S9 and S9 Plus
Anker PowerCore Essential 20000 PD
Anker PowerCore Essential 20000 PD is a high-capacity fast-charging portable charger for the Samsung Galaxy S9 & S9+ with a large battery size of 20000 mAh, which is enough to fully charge the Samsung S9 more than four times (4.5), to charge S9 from 20% to 100% about six times.It will charge the S9 Plus fully nearly four times. The power bank charges the S9/S9+ from zero to 50% in just about 30 minutes.
PowerCore Essential 20000 PD will itself get charged in about 6 hours by the Samsung Galaxy S9/S9+ charger or any USB-C PD or QuickCharge 3.0 charger. It has a USB-C port for charging the power bank and comes with a USB-C to USB-C cable that can be used for charging the power bank (or for charging the S9).
The portable charger will charge all the other latest Samsung smartphones such as Samsung S22, S21, S20 series, Note 20/10 series, S10 Plus, S10, S9 Plus, S8, Note 9, Note 8 etc. as it supports 15-watt Samsung Adaptive Fast Charging used by all these phones as well as 18-watt PD charging supported by newer S20, Note 10/20 series . Anker PowerCore Essential 20000 PD also supports 2.4 amp charging which enables it to fast-charge all the iPhones at double the speed of the included iPhone charger. it will fast-charge newer iPhones including iPhone 13, 12, 11, XR, XS, XS Max, X, 8, 7, 7 Plus, 6s, 6s+ etc. from zero to 50% in 30 mins.
Anker PowerCore Essential 20000 PD has a weight of around 12.6 oz (350 grams) and dimensions of 6.4 x 2.7 x 0.9 inches (17 x 6.2 x 2.2 cm). The portable charger has a textured outer surface that makes it easy to grip and comes with a very convenient 8-point LED battery status indicator.
PowerCore Essential 20000 PD Pros
- Charges Samsung S9 from 20% to 100% six times
- Gives zero to 50% charge in about 30 minutes
- Gets charged through Samsung S9/S9+ charger or any USB-C PD or QuickCharge 3.0 charger in about 6 hours
- Fast charges latest Samsung phones such as S22, S21, S20 etc.
- Fast charges latest iPhone 13, 12 series, 11, 11 Pro, XR, XS etc. from zero to 60% charge in about 30 minutes
- Charges all the iPhones at twice the speed (12 watt) of stock Apple iPhone charger (5 watt)
- Supports Samsung Adaptive charging as well as 2.4 amp charging for iPhones and old Android phones
- Weighs 12.6 oz (350 grams), one of the lightest portable chargers with 20000 mah capacity
- USB-C to USB-C cable included.
Cons
- None
Best High-Capacity Portable Charger for Samsung Galaxy S9, S9+ and Laptops
Xiaomi Mi HyperSonic 20000 50-watt USB-C PD
Xiaomi/Mi has some of the most feature-rich power banks and MI Hypersonic 20000 50-watt USB-C PD is its highest charging output USB-C PD portable charger with an incredible 50-watt output. It has a 20000 mAh battery capacity that will charge your Samsung Galaxy S9 from 20% to 100% about six times!
MI HyperSonic 20000 50-watt PD will charge your Samsung Galaxy S9 & S9+ from zero to 50% in about 30 minutes. It will also fast-charge other latest Samsung phones (S22, S21, S20 series and older Note 10/9/8, S10 etc.) over USB-C PD. The USB-C PD output support enables it to fast-charge a wide range of USB-C PD compatible smartphones including almost all latest Android phones and iPhones (13/12/11 series, X, XS, XR, 8, 7,6, etc.).
The biggest differentiating feature of the MI Hypersonic 20000 50-watt USB-C PD is that its high 50-watt output enables it to charge Macbooks, most Chromebooks, and many USB-C laptops such as Dell XPS series. It will charge Macbook Air almost almost once. The power bank charges Macbook Air faster than the Macbook’s stock 29/30 watt power adaptor.
Even if you do not plan to charge a MacBook or laptop, you can use the 50-watt output to fast-charge – two Samsung phones or iPhones at the same time – something that no power bank in its price range offers.
Any 30-watt USB-C PD charger, including any Macbook Pro/Air charger, will charge the MI Hypersonic 20000 50-watt USB-C PD in about 4 hours.
MI Hypersonic 20000 50-watt USB-C PD weighs around 14.1 oz (398 grams) and has dimensions of 6.3 x 3.0 x 0.9 inches.
Pros
- Best quality/output/price USB-C package in town
- Fast charges the S9 & S9+ from fully drained to 50% battery level in about 30 minutes
- Fast charges latest S22/S21/S20, Note 20/10, A series
- Charges S9 from 20% to 100% about 6 times
- Can fast-charge two modern smartphones at the same time
- Charges Macbook Air almost once
- Charges most Chromebooks and Dell XPS 13 laptops – 9350/9360/9370/9365 and Dell XPS 15 9570/9575
- Battery capacity of 20000 mAh will charge the Samsung S9 four times
- Fast-charges latest Samsung/Android phones and all iPhones/iPads, including 11, 11 Pro/Max, XS/XR and new 2018/2019 iPads
- Gets recharged in 4 hours by any 30-watt USB-C PD wall charger as well as Macbook chargers
- Comes with a USB-C to USB-C cable
- Weighs around 14.1 oz
- Three charging ports – one USB-C and two regular USB
Cons
- None
Best Value for Money Fast-Charging Power Bank for Samsung Galaxy S9 & S9+
If you do not need a USB-C/USB-C cable for charging Pixels etc., then an excellent fast-charging alternative power bank for S9 & S9+ is the Mi 10000 mAh USB-C. It is a sleek and slim fast-charging portable charger for the S9 that has a 10000 mAh battery capacity, adequate for charging –
- Samsung S9 from zero to 100% two times
- S9 from 30% to 100% three times.
- S9 Plus from 30% to 100% nearly three times
The power bank will fast-charge the Samsung S9/S9+ from zero to 50% in about 30 minutes. It fully supports Adaptive Fast Charging, which enables it to fast-charge the other latest Samsung phones such as S20 series, Note 20/10 series, S10, S10 Plus, S9 Plus, S8, etc. as well.
Aukey 10000 mAh USB-C also supports QuickCharge 3.0 output that fast charges all QuickCharge 3.0 compatible Android phones such as LG G8, G7, G6, V50, V40, V30 from zero to 50% in 30 minutes. It will charge iPhones and older Androids via 2.4 amp charging.
The Samsung S9 or S9 Plus charger or any other QuickCharge 3.0 charger will charge the Aukey 10000 mAh USB-C in about 5 hours through the USB-C port.
The power bank weighs 7 oz (200 grams). It has dimensions of 5.8 x 2.8 x 0.6 inches. Aukey 10000 mAh USB-C has a glossy outer finish an comes with rounded corners that make it easy to slide in and take out of pockets.
Mi 10000 mAh USB-C Pros
- 10000 mAh battery size gives two full charges to Samsung S9 or S9 Plus
- Supports fast-charging of S9 as fast as the Samsung charger – zero to 50% in about 30 minutes
- Fast charges new iPhones (12, 11, 11 Pro, XS/XR/X/8/8+) from zero to 50% in about 30 minutes
- Very Reasonably priced
- Light in weight at 7 oz (200 grams)
- Gets recharged in 5 hours through the micro-USB port, by Samsung S9 or S9 Plus charger or any QC 3.0 charger
- Fast-charges other latest Samsung phones and QuickCharge 3.0 compatible Android phones such as Mi 9/8, LG G8, V40 etc.
- USB-A to USB-C cable included for charging the S9. You can charge the S9 via the USB ports without buying any extra cable
- Latest model comes with an in-built USB-C cable for charging the S9 or S9+
Cons
- None