P1110-EVAL-01
Lifetime Power® Energy Harvesting Development Kit for Battery Recharging
User Manual
Overview
The Lifetime Power® Energy Harvesting Development Kit for Battery Recharging is a complete
demonstration and development platform for recharging batteries wirelessly from RF energy (radio
waves). It is designed to be used with an App and is configured for out-of-the-box operation.
The battery recharging boards utilize the P1110B Powerharvester Receiver, which converts RF energy
into DC power. Either the PowerSpot® transmitter or TX91501-3W transmitter is the source of RF
energy, with both operating at 915MHz. Other RF energy sources operating from 850-950 MHz can also
be used as power sources (UHF RFID readers for example). The battery recharging boards receive the RF
energy, convert it to DC, and charge the onboard batteries.
The kit also includes two BLE radio boards that can be attached to the battery recharging boards. When
used in conjunction with the watch or credit card battery recharging boards, the measured charge
current and battery voltage are transmitted via Bluetooth to a mobile device and displayed in the
included App. This enables the user to test both configurations on battery recharging boards
simultaneously.
The P1110-EVB is included in the kit as well. The P1110-EVB contains an evaluation board and antennas
to test and develop with the P1110B Powerharvester Receiver. Like the Battery Recharge Boards, it
converts RF energy into DC power which can be stored in a battery or capacitor, or used to directly
power a circuit. It includes two different antenna configurations.
Contents
The contents of the kit are shown in the image and table on the next page. The kit includes a PowerSpot
RF transmitter (with plastic mounting clips), a TX91501 transmitter, an RF energy harvesting evaluation
board (P1110-EVB) with two antennas, a smartwatch shaped battery recharging board, a credit card
shaped battery recharging board, two coin cell (CR2032) sized radio boards and the necessary power
adaptors.
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 1
Qty
1
1
Item
PowerSpot Transmitter
(TX-91502-ASSEMBLY)
Power and Data
Transmitter
(TX91501-3W-ID)
1
P1110 Evaluation Board
(P1110-EVB)
1
Patch antenna
(PA-915-01)
Dipole antenna
(DA-915-01)
Watch Shaped Battery
Recharging Board
(EVAL-FLEX1-PCB)
Credit Card Shaped
Battery Recharging Board
(EVAL-CC1-PCB)
1
1
1
2
Radio Boards
(EVAL-RB1-PCB)
Rev 5 – 7/2018
Description
4-watt, 915 MHz transmitter for power and data with integrated 8dBi
antenna and power jack.
3-watt, 915 MHz transmitter for power and data with integrated 8dBi
antenna and two power jacks. Sends a pre-programmed transmitter
ID that is received by the P1110B Powerharvester component and can
be decoded by an external MCU.
Evaluation board (Rev. B) for P1110B Powerharvester Receiver. This
board has an SMA connector to attach the antennas and a 10-pin
connector for plug in test board WSN-EVAL-01 (not included).
915MHz directional antenna with 120-degree reception pattern
(included with the P1110-EVB evaluation board).
915MHz omni-directional antenna with 360-degree reception
(included with the P1110-EVB evaluation board).
Flexible watch-shaped board that contains Powercast energy
harvesting technology to recharge the connected 100mAh lithium ion
battery. Status LED will turn on when the battery is fully charged.
Rigid credit-card sized board that contains Powercast energy
harvesting technology to recharge the connected 13mAh lithium ion
battery. Status LED will turn on when the battery is fully charged.
Some units are equipped with a switch to disconnect the battery. It
must be turned on when to charge the device.
Radio board that receives the current charge and voltage data from
the connected battery recharge board and transmits that data via BLE
to the App. Each radio board has its own unique ID and is powered
from an included CR2032 coin cell battery.
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 2
Set-up and Operation
Installation Overview
The following basic steps are required to operate the kit and are provided as an overview. Detailed
installation instructions are provided immediately after this summary.
Battery Recharging
1. Install the App on your Android or iOS device.
2. Pull the tab from the battery housing on the radio board. Connect the radio board to the desired
Battery Recharging Board.
NOTE: The Lithium-Ion batteries on the EVAL-FLEX1-PCB and the EVAL-CC1-PCB need to be recharged
every 3 months to prevent damage to the battery. If the device is equipped with a switch, it should be
turned off during storage
NOTE: Orientation is critical. DO NOT ATTEPMT TO PLUG IN THE RADIO BOARD BACKWARDS.
3. Plug in the transmitter and point towards the Battery Recharging Board.
4. Observe app data, status and discharge LEDs.
P1110-EVB
1. Connect desired antenna P1110-EVB evaluation board.
2. Set switches/jumpers on P1110-EVB evaluation board.
3. Attach test equipment to desired test points on P1110-EVB evaluation board.
4. Enable a transmitting source.
5. Measure data.
Note: For more detail on the P1110-EVB evaluation board setup see
http://www.powercastco.com/wp-content/uploads/2016/11/p1110-evb.pdf
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 3
Step-by-Step Installation
Battery Recharging Board
1. Install the App on your Android or iOS device.
On the Apple or Google Play app store, search for Powercast. Find and install the App called Charging
Monitor.
Make sure Bluetooth is enabled on your device. Launch the App. Your screen should look like the image
below.
2. Connect the radio board to the desired Battery Recharging Board.
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 4
The radio board is equipped with a 10 pin connector, as is each of the Battery Recharging boards. Pull
the one time use tab from the radio board to power it on. Connect the radio board to the desired
Battery Recharging Board as shown below. Orientation is critical. DO NOT ATTEPMT TO PLUG IN THE
RADIO BOARD BACKWARDS. The radio boards are powered separately so that they do not draw power
from the battery that is being recharged.
The Radio Boards correctly connected to the Battery Recharging Boards
If the credit card board is equipped with a switch, it must be turned on to charge battery. The switch is
shown below.
SWITCH
Press the wakeup button on the radio board momentarily (1 second) by gently squeezing the radio
board and battery recharging board together (opposite end as the connector). This will begin
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 5
transmitting the charging data to the app. The app will automatically receive the data. No pairing is
required. Your screen should now look like the image on the left below.
The charging data will be sent to the app for a period of 10 minutes before going to sleep. Press the
wakeup button again to begin another 10 minute period of data transmission. If you wish to end the
data transmission earlier than 10 minutes simply press the button on the radio board again. The radio
board will go to sleep.
The device ID is shown as well as the charge information; the battery voltage level, the charging current,
and the received signal strength indicator (strength of the Bluetooth signal). If more than one radio
board is used, the app will populate the next line with the other radio boards ID and charging
information, as shown in the right image above.
For DISCHARGING the onboard Lithium cell, see step 4.
When disconnecting the radio board from the Watch Battery Recharging board, do not pull on the
antenna as this could damage the board.
NOTE: The Lithium-Ion batteries on the EVAL-FLEX1-PCB and the EVAL-CC1-PCB need to be recharged
every 3 months to prevent damage to the battery. If the device is equipped with a switch, it should be
turned off during storage
Note: The Battery Recharging boards will still function without the radio board connected, however
charge data will not be transmitted.
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 6
3. Turn on the transmitter and point towards the Battery Recharging Board.
Plug in the TX91501 Powercaster Transmitter or the PowerSpot Transmitter and point it toward the
Battery Recharging boards. Place the Battery Recharging boards at an initial distance of 1 to 2 feet from
the transmitter. The app will automatically update with the new charging values.
Note: Orientation of the Battery Recharging Boards in relation to the transmitting source matters.
Properly aligning the transmitting and receiving antennas will give the best performance. The correct
alignment is shown below:
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 7
Note: For the P1110-EVB: As a precaution, do not operate the transmitter within 12 inches of the
evaluation board when the patch antennas are attached. Please see the transmitter user’s manual for
operating details.
4. Status LED’s and Battery Discharge
Both the Watch Battery Charging Board and the Credit Card Charging Board have a status LED. The LED
will turn on when the attached battery is fully charged. At this point, it is necessary to discharge to
battery.
To DISCHARGE the rechargeable Lithium cell, press and hold the wakeup button by gently squeezing the
radio and recharging boards together for approximately 4 seconds. A green LED on the radio board will
illuminate. This LED acts as a load to discharge the lithium cell. BLE data is still transmitted until the cell
is discharged to the minimum level or terminated by the user. To terminate the discharge, momentarily
press the wakeup button again. The device will no longer be discharging and it will be in sleep mode. To
see recharge data again, press the wakeup button and it will begin transmitting data for another 10
minute period
P1110-EVB
1. Connect an antenna to the P1110-EVB evaluation board.
Attach an antenna to the P1110-EVB evaluation board using SMA connector J1.
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 8
2. Configure the P1110-EVB evaluation board
Set switches S1, S2, S3 and S4 as desired.
3. Attach test equipment to the test points of interest.
4. Enable a transmitting source.
Plug in the TX91501 Powercaster Transmitter or the PowerSpot Transmitter and point it toward the
P1110-EVB evaluation board. The line-of-sight range when using the included patch antennas is around
40-45 feet, and less for the dipole antenna.
Note: For the P1110-EVB: As a precaution, do not operate the transmitter within 12 inches of the
evaluation board when the patch antennas are attached. Please see the transmitter user’s manual for
operating details.
5. Measure data.
Note: Operating the evaluation board on a ground plane such as an anti-static protection mat on a lab
bench may cause significant signal attenuation.
To test the proper function of the P1110-EVB Evaluation Board use the following settings or see the
instructions for the P1110-EVB at:
http://www.powercastco.com/wp-content/uploads/2016/11/p1110-evb-1.pdf
J1:
Antenna connected
JP1:
C3 connected
S2:
LED
The LED will blink when sufficient power is available. The blinking rate is faster when
closer to the transmitter and slower when further from the transmitter.
Documentation
Powercast
All documentation and software can be obtained through the following page:
http://www.powercastco.com/documentation/
Rev 5 – 7/2018
P1110-EVAL-01®
Energy Harvesting Development Kit for Battery recharging
www.powercastco.com
Page 9
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