The Arduino is an open source hardware input and output circuit and the Lithium Backpack is a Ardino accessory that will power the Arduino when it is away from a computer or a wall power. These products are sold at Liquidware for under $34 each.Step 1: Plug in the battery connector to the board.Show All Items« PreviousNext »View All Steps Download PS… this one is for the Arduino Decimilia, Duemilanove and UNO. There’s also a Lithium BackPack that works with the Arduino Mega. I’m sure you’ve built something cool, which, like any other cool gadget, would be a hundred times cooler if it could be taken more than 10 feet away from the computer. Whether portability is essential to your device or simply a matter of convenience, the Lithium Backpack lets you take your Arduino wherever you go…and have it turn on! It’s not just about a battery—it’s about power options! As for power, the slim, long-lasting Li-ion battery delivers 9.4, 15, or 29 Arduino hours (Arduino on standby) and is mounted on a PCB that fits snugly onto the backside of an Arduino.

Mike tweaked the circuit design to increase the backpack’s efficiency and decrease voltage ripple which means extra battery life to keep everything running smoother and longer on each charge. What about the options? backpack 55x40x23Well, you can charge it directly through a mini USB port mounted right onto the Backpack, or route it to charge through the core of your device. scansmart backpack 1900 blueYou can even monitor your own power consumption…try doing that with a standard 9V battery! veto backpack ebayI would say that the Lithium Backpack takes your device to the next level, but it’s not even about that. zoomlite backpack

What would you say if someone gave you a phone or an iPod without a battery? I don’t know about you, but I would ask them why they stole my battery. Yeah…you need one of these. Depending on how much juice you need, get these in low, medium, or high capacity.samsonite ict backpack 41 Bare battery matches the size of the Arduinovera bradley laptop backpack very berry paisley High Capacity 2200mAh Lithium Ion Battery (29 Standby Arduino Hours) Medium Capacity 1000mAh Lithium Ion Battery (15 Standby Arduino Hours) Low Capacity 600mAh Lithium Ion Battery (9.4 Standby Arduino Hours) Rechargeable via Tybe-B Mini Cable Supplies regulated 5V and 3.3V Monitor battery voltage status L x W = 2.73×2.10 inches (same as the arduino) medium capacity battery height = 0.299 inches

high capacity battery height = 0.498 inches Lithium backpack -charging itPS… this one is for the Arduino UNO, Decimilia and Duemilanove. There’s also a that works with the Arduino Mega. The Lithium Backpack is a slim, long-lasting Li-ion battery that delivers 9.4, 15, or 29 Arduino hours and is mounted on a PCB that fits snugly onto the backside of an Arduino development board. Here is the Lithium Backpack module: Here is the Lithium Backpack providing power to a TouchShield Stealth and DoubleWide ExtenderShield to create a portable display gadget designed to plug directly into an Arduino. How long does it take to charge the battery fully? Battery is in charging state: Is there any indication that the battery has finished charging? Is there any indication of the charge remaining in the battery? The orange indicator light on the battery just flickers when charging it. How can I use the status pin? Arduino Mega to Go w/HiCap Backpack Arduino Mega to Go w/MeCap Backpack

Arduino to Go w/HiCap Backpack Arduino to Go w/MeCap Backpack Like I always say, “What good is an Arduino if it’s stuck to the computer?” Well, for some people, that’s good enough. But for those who like to take their Arduinos to the ends of the Earth—there’s “Arduino to Go.” 1 Arduino Uno OR 1 Arduino Mega 1 MeCap Lithium BackPack OR 1 HiCap Lithium Backpack Medium Capacity 1000mAh Lithium Ion Battery (14 Arduino Hours) Supplies 5V, 3.3V and Battery Voltage Monitor battery voltage statusIf you have a 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 Pro Trinket and allows a LiPoly/LiIon battery to plug in. When the Pro Trinket USB port is powered, the battery is recharged automatically. Unplug the USB port and the Pro Trinket will switch over to the rechargeable battery.

Ideally, this backpack is for use with the 3.3V Pro Trinket, so that the battery voltage (3.7V-4.2V) will get regulated down to 3.3V on the Pro Trinket board. However, many times, you can run a 5V Pro Trinket + accessories off of the ~4V from the LiPoly battery with no problem. (Technically its overclocking but we've never seen that affect the Pro Trinket itself, AVRs are happy to overclock without complaint).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. There are two LEDs - one red and one green. While charging, the red LED is lit. When the battery is fully charged and ready for use, the green LED turns on. Seriously, it could not get more easy.If you want to add an On/Off switch, we also made that 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, for example.

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. The charge current is 100mA by default, so it will work with any size battery and USB port. If you want you can easily change it over to 500mA mode by soldering closed the jumper on the bottom, for when you'll only be charging batteries with 500mAh size or larger.For use with Adafruit LiPoly/LiIon batteries only! es assembled and testedUses the 5V input via Micro-B USB connector on the Pro TrinketFor charging single Lithium Ion/Lithium Polymer 3.7/4.2v batteries (not for older 3.6/4.1v cells)100mA charge current, adjustable to 500mA by soldering a jumper closedBatteries and Pro Trinket not included.Note: You may get an off-white or a black JST connector. It's normal for the the red and green LED's to be very faintly glowing when the battery is attached but not charging, there is 500uA reverse-leakage current from the schottkey diode from the battery that backpowers the charger chip.