AMPY can charge anything that charges from USB 2.0 or USB 3.0. These include micro-USB, Apple Lightning, and other proprietary charging adapters.

AMPY contains a 1800 mAh battery, giving you enough juice to get through the day while keeping AMPY light and small.

There are a few ways to ensure you are getting the most charge out. Make sure that AMPY is vertical with the AMPY logo on top and USB port on the bottom. AMPY works best on the waist or back of the arm when running, and on the leg just below the knee when cycling. Running generates the most energy, followed by cycling, then walking. Check out more tips on using AMPY here

AMPY is sweatproof, but not submergible.

Yes, as long as AMPY is moving with you, you're generating energy.

Using the included micro-USB cable, plug the micro-USB end (the smaller end) into your AMPY and the USB end into any USB port (computer, wall adapter, etc).

There are a couple of easy checks to see if your unit is working. First, press down the right button and shake the device and a blue LED should flash. Second, plug AMPY into your phone, then shake the device with it plugged in. Your phone should charge intermittently. If both of these tests work, your AMPY is working! However, when you drain your AMPY completely, you can undercharge the battery. If this happens you need to do a high-movement activity (running, or shaking the device) or charge briefly from the wall for a minute or two. From there, slower movements like walking and cycling will charge the device easier. We recommend not draining AMPY completely, as with all batteries, this can reduce it's lifetime. The best way to use the device is to keep it charged to some level through the wall, charge your phone and use the app to prevent overcharging, and top up from motion.

The set of LEDs will only increase over very long periods of time or activity. During typical daily activities and workouts, the LEDs will not increase in level because the battery inside of AMPY is much larger than the amount of energy generated. However, all of the energy you generate is still stored in the device, even if the LEDs do not light up.

The AMPY+ app is a standalone app and does not communicate with your AMPY MOVE. AMPY MOVE does not have bluetooth transmission capabilities. The AMPY+ app is able to gain all of the information it needs from two sources: (1) the sensors in your phone and (2) your input of the number of LEDs that light up on your device.

The inductors inside of AMPY MOVE will produce some noise when you move the device. The noise should be quietest when AMPY is oriented with the logo right-side up. The inductors inside of AMPY will have some amount of friction at first that will reduce over time as you use the device.

The inductors inside of AMPY MOVE do contain magnets. These magnets can be a concern for pacemakers. However, laptops, phones, credit cards and other devices should function OK even when AMPY MOVE is placed close to them. AMPY MOVE can demagnetize hotel key cards and parking cards if placed close to them.

AMPY+ uses your location to improve your Battery Life Forecast. However, AMPY+ can still function without location access. If your battery is draining quickly or you would like to turn off location permissions, you can go to Settings > AMPY+ > Location and select Never.

Open the native app for your fitness tracker, go to settings, and make sure it is writing data to Health Kit. You can also open up the Health app, go to Sources, select your fitness tracker's app, and enable writing of data. If you have a Pebble watch, you can download the Misfit app to connect it to Health Kit. If you have a Fitbit, checkout Sync Solver to sync your Fitbit data to HealthKit.

On iPhones, AMPY+ needs access to Health Kit and your Motion and Fitness to track your activity. Go to Settings > Privacy > Motion and Fitness and enable Fitness Tracking and access for Health and AMPY+. Then, go to the Health app > Sources > AMPY+ and enable access for Steps. On Android phones, AMPY+ needs access to your Google Fit data. Ensure that Google Fit is installed, then open AMPY+ and grant access to your account. You may need to check your Account Sync settings to ensure Google Fit data is being synced.

In order to have your movement recorded, you must carry your phone or a fitness tracker with you as you move. The amount of battery life generated depends both on how much you move and how you use your phone. If you move a lot on a certain day and also use your phone more than normal, you may generate less battery life that day than when you use your phone less.

AMPY+ learns your smartphone usage habits over the course of the first few days. As it learns more, your battery life prediction improves. However, if you do not think the predictions are accurate, you can try closing the app and reopening it.

The AMPY+ app is a standalone app and does not communicate with your AMPY MOVE. AMPY MOVE does not have bluetooth transmission capabilities. The AMPY+ app is able to gain all of the information it needs from two sources: (1) the sensors in your phone and (2) your input of the number of LEDs that light up on your device.

Simply open AMPY+ on your iPhone or Android, plug it into AMPY MOVE, the wall, or any USB outlet, and the app will alert you when you have extended your smartphone's battery life by at least one hour.