Anker 337 Power Bank (PowerCore 26K)

The Anker Advantage

Join the 50 million+ powered by our leading technology.

Colossal Cell Capacity

26800mAh of power charges most phones over 6 times, tablets at least 2 times and any other USB device multiple times.

High-Speed Charging

3 USB output ports equipped with Anker's PowerIQ and VoltageBoost technology ensure high-speed charging for three devices simultaneously (Not compatible with Qualcomm Quick Charge).

Recharge 2X Faster

Dual Micro USB (20W) input offers recharge speeds up to twice as fast as standard portable chargers—a full recharge takes just over 6 hours while using both input ports (wall charger not included).

What You Get

Anker 337 Power Bank (PowerCore 26K) / PowerCore 26800, 2X Micro USB Cable, Welcome Guide, our worry-free 18-month warranty and friendly customer service. USB-C cable and Lightning cable for iPhone / iPad sold separately.

Does it come with a charging cable and wall charger?

No, it comes with two USB Micro USB cables only.

Can I use other Micro USB cables other than the one that came with PowerCore 26800?

Yes, other Micro USB cables can be used to charge your devices with PowerCore 26800. However, to ensure compatibility and the best possible performance, we strongly recommend using your device’s original (OEM) cable, a third-party certified (MFI) cable, or the included cable.

What kind of wall charger should I use to charge PowerCore 26800?

You can safely recharge PowerCore in 6.5 hours using two 5V/2A or higher output chargers. Lower output chargers (such as some phone chargers) will not charge as quickly or reliably.

What should I do if PowerCore 26800 doesn't charge other devices?

Please try using a different charging cable between PowerCore 26800 and your device. Email us at support@anker.com during your 18-month warranty period if this doesn't fix the issue.

What should I do if PowerCore 26800 doesn't recharge?

Please try a different AC adapter and Micro USB cable to see if that helps. Email us at support@anker.com during your 18-month warranty period if this doesn't fix the issue.

Can PowerCore 26800 be taken on board airplanes?

\"Yes, all external batteries with a capacity lower than 27027mAh (100 watt hours) can legally and safely be taken on board airplanes. To calculate an external battery's capacity in watt hours: (Battery mAh Capacity X 3.7)/1000. Here are the relevant requirements quoted from federal transportation security rules: Effective January 1, 2008: Passengers may carry consumer-sized lithium ion batteries (a.k.a. rechargeable lithium, lithium polymer, LIPO, secondary lithium) with no more than 8 grams of equivalent lithium content or 100 watt hours (wh) per battery. This size covers AA, AAA, 9-volt, cell phone, PDA, camera, camcorder, Gameboy, and standard laptop computer batteries. Passengers can also bring two (2) larger lithium ion batteries (more than 8 grams, up to 25 grams of equivalent lithium content per battery) in their carry-on. This size covers larger extended-life laptop batteries. Most consumer lithium ion batteries are below this size.\"

Can PowerCore 26800 be used for international travel?

Yes, PowerCore 26800 can be used internationally. Just be sure that your USB wall charger is compatible with the voltage of the country you're travelling to. The input voltage of an adapter is usually labeled on the adapter itself.

How long will the charge in PowerCore 26800 last without being used?

Generally, our batteries' static power consumption is so low it would take between 20 and 36 months to drain completely. However, it is also worth noting that their chemicals will become less active if left unused for extended periods. To extend battery lifespan, discharge and recharge it at least once every 4 months.

What do the LEDs indicate when PowerCore 26800 is charging itself or other devices?

\"When PowerCore 26800 is charging your device, the LED power meter will stay on, displaying the battery’s remaining power. The light will fade when the device is fully charged and no longer drawing a current. The last LED light will flash when the remaing power is lower than 10% and turn off when lower than 5%. When PowerCore 26800 is being charged, the LEDs will flash and light up one by one to show the progress of the recharge. They will turn off when the PowerCore is fully charged.\"

Can PowerCore 26800 charge three devices simultaneously?

Yes.

My device charges at 1 Amp, will PowerCore 26800's higher output harm it?

No, the PowerCore 26800 will only supply the maximum output current necessary to charge your device.

Can PowerCore 26800 charge other devices while it is being charged?

No, we have disabled this feature due to the detrimental effects it has on the lifespan of portable chargers.

What's the output efficiency of PowerCore 26800?

PowerCore 26800's output efficiency is 60%-70%. Approximately 30% to 40% of the battery capacity is unable to be used because of efficiency complications that affect all electronic devices. These include power lost from circuit heat and voltage conversions from the battery, the charging cable, and your device.

Does PowerCore 26800 work with the new iPhone 8/8+ and iPhone X?

Yes, PowerCore 26800 can charge all iPhones, but an Apple charging cable is not included. Use your device's original (OEM) cable or purchase a third-party certified (MFI) cable separately.

What devices are compatible with PowerCore 26800?

The PowerCore 26800 is compatible with Android, Apple and almost all other devices charged via USB except for iPod nano, iPod Classic, HP TouchPad, Asus tablets and some GPS and Bluetooth devices.