

Adafruit LiIon/LiPoly Backpack Add-On for Pro Trinket/ItsyBitsy
Key item features
- Ideally for use with the 3.3V Pro Trinkets & ItsyBitsy
- Charging is performed in three stages
- Will work with any size battery and USB port
Specs
How do you want your item?
About this item
Product details
Key Features:
- Ideally for use with the 3.3V Pro Trinkets & ItsyBitsy
- Charging is performed in three stages
- Will work with any size battery and USB port
If you have an ItsyBitsy or Pro Trinket you probably know it's the perfect little size for a portable project. This LiPoly backpack makes it really easy to do! Instead of wiring 2 or 3 boards together to make a charging system, this little PCB sits on top of the PCB and allows a LiPoly/LiIon battery to plug in. When the Pro Trinket or ItsyBitsy USB port is powered, the battery is recharged automatically. Unplug the USB port and the microcontroller will switch over to the rechargeable battery.
Ideally, this backpack is for use with the 3.3V Pro Trinkets & ItsyBitsy, so that the battery voltage (3.7V-4.2V) will get regulated down to 3.3V on the board. Solder the backpack on with the extra long header so that it can still plug into a breadboard, or clip the long header leads short afterwards for a slim package.
If you want to add an On/Off switch, that is really easy. The two 0.1" holes with a box around them are the battery output line. Carefully cut the trace between them with a hobby knife and replace with two wires from a switch like this slide switch, or this pushbutton one. Charging is performed in three stages: first a preconditioning charge, then a constant-current fast charge and finally a constant-voltage trickle charge to keep the battery topped-up.
Item Specifics
Assembled and tested
100mA charge current, adjustable to 500mA by soldering a jumper closed
Size: 15mm x 17mm x 2mm / 0.6" x 0.7" x 0.08"
Height w/ JST: 7mm / 0.3"
Weight: 1.3g
For use with Adafruit LiPoly/LiIon batteries only
Batteries and Pro Trinket or ItsyBitsy not included
- Ideally for use with the 3.3V Pro Trinkets & ItsyBitsy
- Charging is performed in three stages
- Will work with any size battery and USB port
Specifications
Brand
Warranty
Warranty information
Similar items you might like
Based on what customers bought
Hochwertiger Usb -Programmierer Ch341A Soic8 Clip Adapter Y0Z3 Soic8 E4J3 $12.77
$1277current price $12.77Hochwertiger Usb -Programmierer Ch341A Soic8 Clip Adapter Y0Z3 Soic8 E4J3
BeagleBoard PROCPE-BBBCAPE BeagleBone Prototype Cape $9.99
$999current price $9.99BeagleBoard PROCPE-BBBCAPE BeagleBone Prototype Cape
Solderless Breadboard Kit 2 Pcs 830 Tie Points 2Pcs 400 Set 65Pcs Flexible Jumper Wires $12.92
$1292current price $12.92Solderless Breadboard Kit 2 Pcs 830 Tie Points 2Pcs 400 Set 65Pcs Flexible Jumper Wires
2242 To 2280 M.2 Long Size Adapter Converter Expansion Rack $6.29
$629current price $6.292242 To 2280 M.2 Long Size Adapter Converter Expansion Rack
Adafruit TCA9548A I2C Multiplexer $14.73
$1473current price $14.73Adafruit TCA9548A I2C Multiplexer
CH347 High-Speed Programmer Module 24 EEPROM 25 SPI FALSH $12.57
$1257current price $12.57CH347 High-Speed Programmer Module 24 EEPROM 25 SPI FALSH
Adafruit Flora Wearable Bluefruit LE Module $21.62
$2162current price $21.62Adafruit Flora Wearable Bluefruit LE Module
2230 To 2280 M.2 Long Size Adapter Converter Expansion Rack $6.71
$671current price $6.712230 To 2280 M.2 Long Size Adapter Converter Expansion Rack
Adafruit Pro Trinket - 3V 12MHz $13.02
$1302current price $13.02Adafruit Pro Trinket - 3V 12MHz
1pcs ESP32-WROOM-32U 32 Mbits 3.3 V -1pcs $14.99
$1499current price $14.991pcs ESP32-WROOM-32U 32 Mbits 3.3 V -1pcs
Arduino Mega Blue Case $5.99
$599current price $5.99Arduino Mega Blue Case
2760176 - BOARD SMT PROTOTYPE 1X3 INCH SOIC TO DIP ADAPTOR $6.00
$600current price $6.002760176 - BOARD SMT PROTOTYPE 1X3 INCH SOIC TO DIP ADAPTOR
Adafruit PCF8575 I2C 16 GPIO Expander Breakout - STEMMA QT / Qwiic $12.45
$1245current price $12.45Adafruit PCF8575 I2C 16 GPIO Expander Breakout - STEMMA QT / Qwiic
Arduino Genuino Clear Case $5.99
$599current price $5.99Arduino Genuino Clear Case
Adafruit Metal Ball Tactile Button - 6mm (10 Pack) $13.68
$1368current price $13.68Adafruit Metal Ball Tactile Button - 6mm (10 Pack)
120PCS Breadboard Jumper Wires Male to Female Ribbon Cables Lead Kit for Arduino TAPDRA Spare Part $12.92
$1292current price $12.92120PCS Breadboard Jumper Wires Male to Female Ribbon Cables Lead Kit for Arduino TAPDRA Spare Part
Adafruit Trinket - Mini Microcontroller - 5V Logic $14.73
$1473current price $14.73Adafruit Trinket - Mini Microcontroller - 5V Logic
NVMe M2 SSD Converter Card to for Apply Mini 2014 A1347 MEGEN2 $9.55
$955current price $9.55NVMe M2 SSD Converter Card to for Apply Mini 2014 A1347 MEGEN2
GUYUTING Durable Expansion Kit T-Type Board, Breadboard, and Jumper Cables for Raspberry Pi GPIO Educational Use $15.71
$1571current price $15.71GUYUTING Durable Expansion Kit T-Type Board, Breadboard, and Jumper Cables for Raspberry Pi GPIO Educational Use
Check out these related products
Adafruit LOGIC LEVEL CONVERTER, 4CH, ARM DEVELOPMENT BOARD $11.60
$1160current price $11.60Adafruit LOGIC LEVEL CONVERTER, 4CH, ARM DEVELOPMENT BOARD
IIC I2C Bi-Directional 5V to 3.3V Logic Level Converter Module For Arduino $5.89
$589current price $5.89IIC I2C Bi-Directional 5V to 3.3V Logic Level Converter Module For Arduino
AT24C256 I2C Interface 256k Bits EEPROM Memory Module $7.99
$799current price $7.99AT24C256 I2C Interface 256k Bits EEPROM Memory Module
Treedix 3pcs Compatible with Arduino GY-302 BH1750 Light Intensity Illumination Module $9.99
$999current price $9.99Treedix 3pcs Compatible with Arduino GY-302 BH1750 Light Intensity Illumination Module
Techsmarter 30000mah Rugged & Waterproof 45W USB-C PD Power Bank. Portable Battery Charger with Flashlight for iPhone, Samsung Galaxy, iPad Air/Pro, Macbook, Androids, LG, HTC, Motorola, Chromebook $74.99
$7499current price $74.99Techsmarter 30000mah Rugged & Waterproof 45W USB-C PD Power Bank. Portable Battery Charger with Flashlight for iPhone, Samsung Galaxy, iPad Air/Pro, Macbook, Androids, LG, HTC, Motorola, Chromebook
364.4 out of 5 Stars. 36 reviewsTechsmarter 20000mah 100W (Max 130W) Dual USB-C PD PPS Power Bank with Samsung Super Fast Charging. Portable Charger Compatible with iPhone, Galaxy, iPad, MacBook, Chromebook, XPS, ThinkPad, Surface $59.99
$5999current price $59.99Techsmarter 20000mah 100W (Max 130W) Dual USB-C PD PPS Power Bank with Samsung Super Fast Charging. Portable Charger Compatible with iPhone, Galaxy, iPad, MacBook, Chromebook, XPS, ThinkPad, Surface
15 out of 5 Stars. 1 reviews

