Best Galaxy S8 Power Banks in 2026

【Power bank portable high capacity】The 25800mAh power bank could charge your phone at least 5-7 times, Suitable for business, travel, going out, you don't have to worry about your phone low battery. [Note:High capacity so the products weight 350g]

【Portable charger power bank with 2-port 3.1A output】 The portable charger with 2 USB ports in combination with a 5V / 2.1A and 5V / 1A output will provide your device with fast enough power.Dual USB Outport Charging let you quick charge your phone and still have some juice to share with other devices.

【External battery with protection system】 We use a high quality A + polymer lithium battery to extend the life of our products. Built-in security devices protect your devices from excessive power, overheating and overcharging.

✔【Quick Charger, Twice Faster】: Newest 26,800mAh fast charging portable charger power bank adopts charge+ technology which can save 50% recharging time, 2 times faster than a regular portable charger. Your iPhone can be charged from dead to full about 1 hour and even less. Supporting PD (Power Delivery), QC3.0 and 2.0, Samsung FAST, Huawei FCP, the output voltage can reach 12V 3A 18W and identify your device to deliver the fastest possible charge.

✔【Charges 3 Devices Simultaneously & Support Type C/Micro USB Input】: 2 micro and a type-c USB outputs (iSmart QC3.0 3A) can charge 3 devices simultaneously. Share the power with your friends and enjoy the fun. Moreover, the power bank fast charger supplies type-C and Micro input ports, can meet your different requirements when in charge. The charging time is much faster around 5-6 hours with 3A input port.

✔【26800mAh Durable High Capacity & Universal Compatibility】: Slim backup power charger battery for cell phone with higher capacity can recharge your iPhone X 6.8 times, Samsung Galaxy S8 4.8 times, iPhone 7 Plus 4.5 times, iPad Air 2 1.5 times. The battery bank compatibles with almost all the 5V devices as iPhone, iPad, Samsung, Sony, Huawei, HTC, LG, Nexus, Tablet, camera, Bluetooth, GPS and more smartphones.

【1-Feet Short USB C Cable】 1ft USB Type C Charger Cable Easy for charging your phone with a power bank. beat the tangle and always keep the clutter down.Ideal for Travel use.

【USB C CABLE BROAD COMPATIBILITY】: Compatible with the new USB C devices such as Samsung Galaxy Note 8/S10/S9/S9+/S8/S8+,LG V30, LG G6 G5, LG V20, Apple Macbook 12"(2015), Pro(2016), OnePlus 5 3T 2, Google Nexus 6P/5X, Google Pixel/Pixel XL,Pixel C, New Nokia N1 tablet, Lumia 950, Lumia 950XL, ChromeBook Google Pixel,Zen AiO, Lenovo Zuk Z1, HP Pavilion X2, ZenPad S 8.0,Huawei P10 Plus,Huawei Mate 9, GoPro Hero5 and other devices with USB C connector.

【REVERSIBLE CONNECTOR】:Keeps up with the latest trend of USB interface. This user-friendly design allows you to plug into all your USB Type-C compatible devices without worrying about the orientation of the port.

2 in 1 Charging Mode: This power bank supports wireless charging and wire charging. 3 outputs availeble, wireless, USB A and USB C. If you are using wireless charging, make sure the phone case is not thicker than 5MM

Powerful Capacity - 12000mAh Portable charger provide more than 4 solid charges for an iPhone 6/6S, iPhone 8 4.5 times, a Galaxy S8 for 2.5 times, or an iPad Air more than one full charges, which means you get a charging station while you are on a long-term journey. On board the plane is also ok

ID Indentify Tech - Auto detect the charging requirement from your devices and allow simultaneously charging for your devices up to 3A(max) per port; which means you only 1 hour to fully charge your iPhone 6 with Bonai 12000mAh power bank

✅【2 Pack of 10000mAh Portable Charger】It is portable battery with 10000mAh capacity of each power bank cargador portatil which would be more than enough for 3 days trip. Each of them can fully charge your iPhone 8 3 times, iPhone X 2.6 times, iPhone 7 Plus 2.3 times, or a Galaxy S8 2.2 times.

✅【Dual Output and Inputs】The phone charger battery has two USB output ports (2.4A) allow for charging two iPhones or Samsung Galaxy simultaneously with high speed. It also has one Micro USB inputs with charging cable included in the package and Type-C inputs for added charging option. The Type-c and Micro USB inputs can fully refill the battery itself in 5 hours at 5V 2.1A.

✅【 Refined Design Small & Slim】The portable phone charger can easily fit into your hands or pocket, matte surface keeps it free of fingerprints, weighing 220g and only 14mm thick. 4 LED indicator shows remaining battery level at a glance (25%~50%~75%~100%).

⚡【18W Power Delivery USB-C Port】: Type-C port with PD protocol provides 9-12V high voltage output, compatible with your MacBook/ new Type-C iPad Pro/ new 13" MacBook Air with Retina display. The USB-C port is versatile, also compatible with QC 3.0 protocol that means it will charge your compatible devices with the optimal charging speed For example, Boost up 50% battery to your iPhone X/ 8/ 8 Plus in 30 minutes. (USB-C to Lightning cable is not included)

⚡【High-speed Charging】: Full recharging battery 7 hours by QC/PD 3.0 charger; It has two standard USB ports, a Quick Charge port and a USB-C port that allows you to charge multiple devices simultaneously, these ports will detect devices and set them for optimal charging settings. Quick Charge 3.0 port charges compatible devices up to 80% in 35 minutes, providing 5V 9V 12V voltage intelligently adjustable charging for different QC 3.0 devices, 4 times faster than conventional charging

⚡【26800mAh High Capacity, Powerful Compatibility】: Charmast power bank compatible with Switch Nintendo, Sony camera, GoPro、VR virtual headset、Heated Vests、iPhone Xs/XR/X/8, Google Pixel, Samsung Galaxy, Sony, Blackberry, HTC series and etc. USB-C cell phones. With its 26800mAh capacity, it is compatible with iPhone 8 7 times, Galaxy S8 5 times, iPad mini 3 times, 2017/ 2016 Macbook and tablets at least 2 times, notebook at least once, that's enough power to last an entire trip.

Sparkling Diamond Design: The glittering design,complete with exquisite diamond embellishments,its very impress and give it as a gift to your loved ones, and enjoy the convenience and fashion it brings to your life.

Built-in USB-C connector: Plug into your phone directly without any extral cable, never bother with charging cable again. The portion that plugs into your phone has a silicone cover to protect it when you are not using it and the cover is attached to the charger so you won't lose it.

Ultra-Compact & Lightweight: Remarkably small, lipstick design slides easily next to your phone in any pocket or bag. Size only 3.1 X 1.9 X 1.1 inch, weight only 3.9 ounce.

【Super-mini Charger】Light weight, compact, and sleek. Handy size that fits in your pocket easy and 4.2 oz each is not bulky at all.

【Reliable Daily Backup】Each power pack has 5000mAh capacity which is enough to power a smartphone for at least 1 full charge cycle. Keep your phone going when battery icon starts to dip in the red.

【12W Rapid Charging】Features a full-size USB port, you will get a 5V/2.4A output from the battery charger, that is faster than a regular 5V/2A charger adapter.

【Upgrade 10000mAh Power Bank】High Capacity Ultra Compact Portable Charger Can charges an Galaxy S8 2.5 times, an iPhone 7 3 times (It depends on the capacity of your mobile phone) Suitable for a business trip or other outdoor activities.

【Mini Portable Charger with LCD Digital Display】LCD power display can accurately keep track of remaining power, If it does not show up,pressing once on the power button to turn it on.

【High Speed Charging External Battery】 JONKUU power bank has dual USB ports, combined with dual 5 V / 2.4 A output, quickly provide enough power for your phone and other devices.

✔ EASY TO USE: Luxtude portable iPhone charger with the built in lightning cable (Apple MFi certified), combines the advantage of the iPhone battery case - no concern of missing lightning cable, the slim, sleek, phone-sized design make it fits nicely in your palm, purse and pocket on the go.

✔ HIGH CAPACITY & SAFER: Premium UL certified Li-Polymer iPhone battery pack ensures safety, 10000mAh power bank provides over 3.6 charges for iPhone 8, 2.4 charges for iPhone X or iPhone 8 Plus, 2 charges for Galaxy S8, great for full day travel or backup supply.

✔ USER FRIENDLY TECH: (1)Pass-Through Tech - With our by-pass tech, you can charge phones & power bank simultaneously (built-in lightning cable for iPhone, USB A port for Android, type c input for recharging); (2) Auto-off function – It will auto-off (within a minute) when the iPhone is fully charged or when no device is connected.

✅【6 in 1 Design】USB to Type Cx2/Micro USB/iPx2 charger cable can charge most devices. Total current is 4A fast charging multiple devices simultaneously. Please use 5V/3A charger adapter. CAN'T Sync Data

✅【Short & Lightweight】0.6FT/18CM is perfect length for travelling, office, home. 1 ounce is so tangle-resistant and handheld that you could carry in your bag or pocket, take it with you and get it anywhere

✅【Durable & Flexible】Made of high strength, good toughness ABS materials, very thin and soft. Withstand more than 20,000 bending tests. Using high-quality heat resistant aluminum alloys terminals to increase reliability and durability

【Short and Convenient】0.8ft is the optimum length for charging your phone with a power bank. Tangle resistant and handy to carry in your bag or pocket

【FAST CHARGING & DATA-SYNC】: Supports safe high-speed charging 3.1A and data syncing speed up to (480Mb/s). 56kΩ resistor provide outstandingly reliable conductivity &stability and protect your devices and charging adapters from damage.

【REVERSIBLE CONNECTOR】:Keeps up with the latest trend of USB interface. This user-friendly design allows you to plug into all your USB Type-C compatible devices without worrying about the orientation of the port.easy to use even in darkness without worrying about the orientation.

Ultra-High Cell Capacity: 38600mAh massive capacity solar charger power bank provides more than 6 charges for iPhone 13, more than 5 full charges for iPhone13 Pro Max, almost 5 full charges for Samsung Galaxy S10, and over 3 charges for iPad mini 5.

Advanced Wireless Portable Charger: Truly cable-free solar battery charger, the wireless output supports all Qi-enabled phones for inductive charging. Such as iPhone13/13 mini/13 Pro/13 Pro Max/iPhone12/12 mini/12 Pro/12 Pro Max/iPhone11/11 Pro/11 Pro Max,Samsung Galaxy S9/S9plus S8/S8plus etc.

3 Cables & Simultaneous Charging: The external charger equips with 3 cables: Micro-USB cables, IOS cables, USB-C cables, you can choose to install any two of them into the side slots. There are 2 USB output ports, 1 USB-C output port and one wireless charging, so it can charge up to four devices.

【Fast Charging】As all imuto fast charging power banks,exclusive 100W input technology,100W USB-C input to recharge the power bank in only 1.5h with a 90W wall charger (charger non included)

【100W Higher Power】suitable for gaming laptops, faster and more efficient than 65W. 30 minutes for MacBook Pro 16-inch 2023 (latest), macbook air(M2), iphone 14 pro/Max, Samsung S23/Ultra, two steam desks, charging more than 50%

【26800mAh Large Capacity】Compared with the first generation X4G (20000mAh), the utilization rate is 1.5 times higher.Fully charge macbook pro 14" or Dell xps 13; 1.5 times for 3.5 times for macboo air; iphone 14 pro max; 6.1 times for iphone 14 pro; 3.5 for the Galaxy S23 ultra, ; 5.5 times for Samsung s22; 1.5 times for steam desk.-ideal for a weekend getaway.

Capacity Upgraded: The 3rd Gen. usb c battery bank, 4500mAh big capaity could charge Samsung Galaxy Z Flip 3, S20 phones by 90% or Google Pixel 6, OnePlus 9, 9 pro phones by 60%.

More Stylish Design: The new body is more fashionable while connect with android phones (for different phone colors, the new usb c powerbank has white,black,pink colors available)

More User-Friendly: Connector cover is made easier to take off and on. LED indicator light is changed to be softer. Matching more cellphone cases due to the connector length is upgraded too

Ultra High Capacity: solar power bank inbuilt 33500mAh Li-polymer battery pack, over 1200 times recharging. Can charge 6 times for iPhone iPhone XS Max, 7 times for Samsung Galaxy S8 , 4 times for pad Mini 4, 5 times for game switch, 1.17lb/ 530g weight, outdoorsy men favorite portable charger.

Super Fast Charging: with QC3.0 18W USB A1 and PD 20W USB C output port, 10W wireless charging fits iPhone android cell phones (NOTE: Short press before use). Only need 6H to refuel by 20W adapter, micro and Type-C dual input, this phone battery charger can charge 5 mobile devices sync.

Powerful Led Flashlight: 6W 260 lumen 25H (strong) /40H (soft) working, long range focusing lighting cup reach 165FT distance, portable phone charger has strong/ soft/ SOS/ strobe four modes, helps you send emergency signals. Widely for camping, hiking, car repairing.

【65W High Power】Substantial 65W PD output means it can charge your laptop "in a pinch" by USB-C. It supports all quick charge technologies, utilizing the PD technology to quick charge devices and itself.

【Colossal Capacity】A 20,000mAh battery bank can power your iPhone 13 Pro Max from 0% to full 2. 5 times, Galaxy S20 Ultra 2. 5 times and MacBook Pro 13'' 0.9 times. It’s perfect for your travel and business trip.

【Simultaneous 3-Device Charge 】Equipped with one 65W PD USB-C port and two 30W QC USB-A port to ensure you can charge your laptop and phone at top speeds simultaneously. (Note: Simultaneous charging may affect charging speed.)

Design for Android Family: Widely compatible with Android like Samsung, Pixel, LG, Motorola and more other Android phones etc. Perfect for S22, S21, S20, Galaxy A52, Note 20 Ultra, S10, Note 9, S9, Note 8, Galaxy Fold, Flip 3, Fold 3 Series; LG G7 ThinQ, V40 ThinQ, V35 ThinQ, Stylo 4, G8, G6, Q6; Moto G7, G6, G7 Plus, G7 Play, Moto Z2 Play, E5, G6 Plus, Z3 Play etc; Google Pixel 5A, Pixel 6, etc; Xiaomi Mi 9, Mi 8 Pro, Pocophone, Oppo, TCL or other Type C Phones etc.

Quick Recharging and Charging: Portable Charger can be recharged quickly via QC or PD fast charging protocol, fully recharged only need 1.5 hours by 9V-2A. Its usb c output supports PD, QC3.0, FCP, MTK PE1.1/2.0, AFC...etc fast charge protocol, it can quick charge most of your android (type c output) cell phones perfectly. Never waste time in recharging and charging.

Cordless Battery Pack for Android Phones : If you are Android fans (USB C output) and are tired of carrying cables to charge your android phone, those small portable chargers are definitely best choice for you. Ultra small and ultra lightweight, each unit dimensions is only 77.2*35.0*24.7mm (3.03''x1.38''x0.97''), single unit only weighs 0.2lb. Best portable phone chargers for android.

✅【PD Fast Speed Charging】- Bestmars 10000mAh Power Bank Equipped with Avanced Quick Charge 3.0 & PD 3.0 Chipset, offer one of the Highest Charging Speed in the market for both charging and recharging, it is also 100% back-ward compatible, intelligently detects and charges your devices at its max speed(iPhone 14 13 12 Series X XS Pro MAX XR X 8 7 6 6s Plus 5s, iPad Mini/Air, Samsung Galaxy Smartphone, Google Nexus, LG, Android Cell Phone, Nintendo Switch etc and more)

✅【Slim Size with High-Capacity 】- 10000mAh Capacity Power Bank with Grade A+ li-polymer battery cell inside - Enough capacity to provide 4 solid charges to an iPhone 6s, or at least 2.5 charges to iPhone X, or 1 and a half charges for an iPad Mini.

✅【Dual Input】- Built-in USB-C and Apple (iOS) input ports, you can recharge the power bank with either the USB-C cable or the charging cable for iPhone, so only 1 cable is needed for carrying around, very convenient(Note: Both cables are included)

⚡ ALL-IN-ONE PORTABLE POWER BANK – Our certified TRAVELGO portable phone charger has a large 10,400 mAh battery capacity and dual USB ports to meet your charging needs. The battery bank comes equipped with a Smart LED display to show your remaining power. Easy to put the battery pack charger into any pocket & super convenient for your daily carry and travel!

🔋 PERFECT TRAVEL CHARGER - Lithium-ion Polymer 10400mAh battery charges most smartphones several times. For example, iPhone 11 (3.3 charges), iPhone XR (3.5 charges), iPhone XS (3.9 chargers), iPhone 8 (5.7 charges), iPhone SE (6.4 charges), Galaxy S10e (3.4 charges), Galaxy S10+ (2.5 charges), Galaxy S8 (3.5 charges), and even iPad Air 2 (1.4 charges). Ensure to use your own charging cable with our USB power bank. A must-have for travel, camping, business trip, office, restaurants, and more.

✈️TRAVEL POUCH INCLUDED – For convenience, we’ve included a small soft mesh bag with all our portable chargers. This will help you carry the charging bank along with the cable and prevent any possible damage. Note you can easily and legally carry the TRAVELGO portable charger power bank with you in your carry-on baggage. Now you will never have to run out of battery again!

Compact and Cute - Compact and cute design, small enough to easily slip into your backpack, purse, handbag or pocket. It is a best gift for Valentine's day, anniversaries, birthdays, thanksgiving, christmas and so on.

10000mAh Capacity - Fully charge an iPhone 8 3.5 times or a Samsung Galaxy S8 2.5 times, which is more than enough for your all day trip. Perfect for flights, road trips or just any time you're away from an outlet.

Dual USB Output - Charge two devices at the same time and enjoy sharing the battery with your friend or family.

🌳【SHORT & CONVENIENT】: 1ft is the perfect length to charge your phone with power bank or power station. Tangle free and easy to carry in your bag or pocket. Simplize your charging experience

🌳【FAST CHARGING & DATA-SYNC】: Supports safe high-speed charging 3.1A and data syncing speed up to 480Mb/s (60MBps), 2 in 1 Transfer and Power Charging. Built-in 56kΩ pull-up resistor outstandingly reliable conductivity and stability to protect your devices and charging adapters from damage

🌳【DURABLE】: The type c charging cable with aluminum shell and premium quality jacket is more durable and stable to protect wire cores and resists kinks. Tangle-free cotton braided and long tail design to make the short usb c cord can bear 18000+ bending test and extend the using lifespan

USB C to USB C CABLE: 6ft charge cord features USB-C to USB-C connector heads and is equipped with Power Delivery (PD) for an ultra fast charge at max-speed from any basic wall charger adapter or portable charger to your Android phone or Type C device

TALK WORKS QUALITY: Our products are built to last and withstand wear and tear of everyday use, which is why we back this usb c charger with a Lifetime - simply a better charging solution that is faster, more durable and safer than the rest

DURABLE CABLE & CONNECTOR HEAD: PD cable features a durable covering and reinforced connector head built to endure up to 15, 000 lifetime bends without losing shape, so you can bend, twist and pull on the type c charger without fear of fraying or breaking

Get ready for your next outdoor adventure with the TSBar Rugged 30000! This compact and powerful charger is designed to withstand the toughest conditions, making it the perfect choice for outdoor enthusiasts, campers, and travelers. With its reliable, fast-charging capabilities and durable design, it's the perfect companion for all your outdoor activities.

Multiple USB ports - This power bank is designed to charge up to four devices at the same time. It is equipped with one 45W USB-C PD port, one 18W USB-A port, and two 12W USB-A ports, ensuring that you have the right port for any device.

45W USB-C PD Port - Equipped with a powerful 45W Power Delivery USB-C port, which is capable of fast charging a wide range of devices, including USB-C smartphones, laptops, tablets, and portable gaming systems like the MacBook Air/Pro, iPad Air/Pro, Chromebook, Dell XPS, HP, Steam Deck, Switch, and more.

【12000mAh Mobile Phone Chargers】 Charges your iPhone X 2.8 times, iPhone 8 Plus 3 times, iPhone 8 about 3.7 times, Samsung Galaxy S8 2.7 times, Nintendo Switch 1.6 times. Enough capacity for daily use or journey or travelling etc.

【Updated Portable Charger With LCD Digital Screen Display 】This JvGoal External Battery has been Updated with the newest LCD Digital Screen Display, will show the remaining power to prevent it from running out of power. With MINI and SLIM design, this Battery Pack is easy to hold and carry whenever and wherever you need.

【Remarkably Compact Powerbanks】One of the smallest and lightest 12000mAh portable charger(94.5x62x22.2mm/3.7x2.44x0.87inch).and light weight (7 Oz). Compared with other 10000mAh portable chargers, The capacity increase 20%, The Volume decrease 25%, weight decrease 20%. The portable design make it's easy to take anywhere.

【Pilot 5GS - Upgraded Version of Pilot 4GS】Upgrade 1: This power bank adds the latest PD3.0&QC3.0 fast charging technology,input power can reach 18W,output power can reach 20W.Compared with standard 10-15W,power boosts 25%,saving up to 50% charging time.Upgrade 2: On the basis of USB-A output port and 8-PIN input port,this portable charger adds C port that supports output and input.

【20W PD Powerful Output】Up to 20W power delivery enables the Type-C port of this portable power bank to charge iphone 12 from 0% to 60% in just 35 minutes,saving 1.5h charging time.Also equipped with an 18W USB-A port,this portable phone charger supports quick charging the second device.

【12000mAh Capacity】:This 12000mAh battery pack which made of aluminum alloy material could charge an iphone 11 2.5 times,a Samsung S20 2.0 times,an ipad 1.5 times,Airpods Pro 46 times.

✨ 【Plug-in Fast Charging】No cable needed, mini power bank with two way USB-C plug, max 20W fast charging for you phones, charge for you Samsung to 60% only needs 30 mins. support PD & QC 3.0 fast input and output. perfect on-the-go charger bank for usb c devices. (Note: this power bank only for usb c devices, not for iPhone)

✨ 【Super Mini & Cute】Only 3.07*1.44*1.07 inch and 3.7oz, ultra cute lipstick sized portable charger, you can easy put in pocket or purse when going out. a cool and fashion power bank with shiny surface design. best choice for gifts.

✨ 【Built-in Cable & Metal Stand】Portable charger with built in cable usb c, you can direct charge for your usb c devices directly and no extra cable needed, also equipped with adjustable metal stand, you can place phones with horizontally or horizontal or vertical angle , enjoy your video time

【Cute Portable Charger for Android】Portable Charger USB C Output: Widely compatible with Samsung S21, S20 FE, Galaxy A52, Note 20 Ultra, S10 Plus, S10, S10e, Note 9, S9 Plus, S9, Note 8, Galaxy Fold, Flip 3 and Fold 3 Series; LG G7 ThinQ, V40 ThinQ, V35 ThinQ, Stylo 4, G8, G6; Moto G7, G6, G7 Power, G7 Plus, G7 Play, Moto Z2 Play, E5, G6 Plus, Z3 Play; Google Pixel 5A, Pixel 6, Pixel 6 Pro; Xiaomi or other Android Phones etc.

【Emergency Battery Backup Charger】 If you are Android fan (USB C output) and are tired of carrying cables to charge your android phone, this small portable charger is definitely best choice for you. Best portable USB C phone charger for android.

【Ultra-Compact Mini Power Bank】Size of a lipstick,not need a cord it’s easy to slip in your pocket or your purse and when you need it you have a charger right then and there.

👽Fast-Charging Fun – The Jocri USB C charger cord takes the mundane task of charging and makes it fun for your kids. And it’s equipped with LED lights that light up in 6 different colors, with a playful cartoon design, data transfer capabilities and durable construction.

👽Colorful LED Lights – As your kid is enjoying their favorite game, transferring their pictures & videos from their mobile device, or charging their PS5 controllers with our USB C charge cable, they can enjoy an entertaining lightshow thanks to the 6 different colors of the LED light.

👽Fast-Charging Enabled – With a maximum output of 5V1.2A and a generous cable length of 3.2 feet, our Type C charger cable enables your kids to comfortably charge their devices, and also enjoy using them while they charge. No obstructions – simply fun & fast charging.

Qi WIRELESS CHARGER & USB PORTABLE CHARGER IN ONE: Extend the battery life of your Qi enabled phone with 10W of fast charge wireless power and/or via Dual USB Ports to any USB compatible devices with 10000mAh/2.4A for up to 5x extra battery

Qi CERTIFIED COMPATIBLE: Works with all Qi enabled devices (iPhone XS, iPhone XS Max, iPhone XR, iPhone X, iPhone 8, iPhone 8 Plus, Samsung Galaxy S8, S8+, Note 8, S7, S7 Edge, S6, S6 Edge, Nokia 9, Nexus 4, 5, Lumia 920 and other Qi enabled devices)

NO CORDS NEEDED: Simply place your Qi enabled smartphone directly on the wireless power bank to charge your phone wirelessly with ease at home or on the go - pass through charging allows power bank and phone to charge simultaneously