Answer: Yes, more than one electronic device can be powered with the wall power adapters included in our battery eliminator kits. The number of electronic devices that can be powered depends on the power consumption of each device, and the total power output that the wall adapter can supply. The power consumption of each electronic device may or may not be labeled on the device, and most of our wall adapters have the total power output listed on them. If everything is labeled, then simply add up the power consumption of each electronic device and make sure it's less than or equal to the total power output of the wall adapter. If everything isn't clearly labeled, then it's kind of a guessing game. In this case, just keep adding on electronic devices until they stop working properly and then reduce the number of devices until they all start working again. You may even want to reduce the number of devices by one or two more to give you a little extra operating headroom. Our wall adapters won't be damaged by overloading them like this because they are designed to limit the amount of power, they can supply in order to avoid being damaged. In order to power the additional electronic devices, each device will need its own active dummy cell battery and the appropriate number of passive dummy cell batteries. These can be purchased separately on our website. You will also need the appropriate POWER SPLITTER CABLES. We have 2-way up to 8-way POWER SPLITTER CABLES. You may also need POWER EXTENSION CABLES. in order to space out your electronic devices and to power devices located some distance away. All of the connectors on our active dummy cell batteries, POWER SPLITTER CABLES, POWER EXTENSION CABLES are compatible with each other making this an easy to implement plug-and-play solution! Below is an example of powering multiple electronic devices from a single wall adapter included in one of our battery eliminator kits. This example is for powering 3 x flameless LED candles where each candle uses 2 x D batteries. The wall adapter included in one of our 2 x D Battery Eliminator Kits has an output voltage of 3.3VDC and can supply up to 1A of output current; therefore, the wall adapter can supply up to 3.3VDC x 1A = 3.3W of output power. Each flameless LED candle only consumes about 0.050A of current (typical for a flameless LED candle) at a voltage of 3.3VDC; therefore, the power consumption of each candle is only 3.3VDC x 0.050A = 0.165W. This means a single wall adapter can power up to 3.3W/0.165W = 20 flameless LED candles, so powering only 3 is easy. For this particular example, you would need to purchase a 2D BATTERY ELIMINATOR KIT, 2 x D ACTIVE DUMMY CELL BATTERIES, 2 x D PASSIVE DUMMY CELL BATTERIES, and a 3-WAY POWER SPLITTER CABLE. POWER EXTENSION CABLES can be purchased as needed for your particular application depending on how far away each candle is from the wall power adapter and from each other.