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These are very slim, extremely light weight batteries based on Lithium Ion chemistry. Each cell outputs a nominal 3.7V at 2000mAh! Comes terminated with a standard 2-pin JST-PH connector - 2mm spacing between pins. These batteries require special charging. Do not attempt to charge these with anything but a specialized Lithium Polymer charger.
Battery includes built-in protection against over voltage, over current, and minimum voltage. Please use caution when using this battery in wearable projects. When using conductive thread, a short in the thread can create sparks and heat. We recommend using coin cell batteries for beginners.
Note: This battery is not available to ship to Alaska or Hawaii, or through any express services (2-day, overnight), or internationally. This is temporary! Check out our blog post for more information. Additionally orders may take longer to process and therefore do not qualify for same-day shipping. Sorry for any inconvenience this may cause!
Note: This item is non-returnable. If this item arrives damaged or is not functioning properly, please do not hesitate to contact us to see if further actions may be taken.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Competent - You will be required to reference a datasheet or schematic to know how to use a component. Your knowledge of a datasheet will only require basic features like power requirements, pinouts, or communications type. Also, you may need a power supply that?s greater than 12V or more than 1A worth of current.
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Based on 9 ratings:
1 of 1 found this helpful:
This is a good battery for replacing failing batteries in small low drain devices like radio, phone, Mp3s players. I did find that the 2000 mAh rating is assuming a less than 500 mA discharge rate as anything over that begins to drag the capacity lower and a 1A discharge rate reports closer to 1450 mAh than 2000. I would avoid use in high drain devices.
I have purchased two of these batteries. One for a Blynk Board project and the other for an ESP8266 Thing - Dev Board. Each project runs for over 24 hours on battery power with typical LED's on and blinking & no sleep mode. This battery backup is just right for these projects when mains goes down. Some local power outages have lasted more than 12 hours making this battery a must. I added a JST Jumper 2 Wire Assembly, Lipo Charger Basic Micro USB & USB MicroB Plug Breakout to the Thing - Dev Board to accommodate charging this battery.
The battery worked as expected.
Sparkfun's Lithium-Ion Batteries are reliable and consistent. I don't know what else you want from a battery. It has taken my projects from unpowered and useless to strong productive members of my robot army.
Battery is holding up in the project so far, no complaints
This battery delivers at or better than the 2000mAh spec. All of the 8 batteries (from 2 different vendors) that were tested (multiple iterations of charge/discharge) performed exceptionally well under load testing. One battery failed. Root cause investigation determined that it was the "safety board" electronics that failed. Battery appears "good". (No further testing has been done on it). Note: It is possible that the battery Electronic Load (XY-FZ35) caused the safety board to fail as I was running the discharge rate very close to the published limit.
Worked nicely with the esp32 thing
0 of 1 found this helpful:
Incredibly long time on a charge.
I bought this battery to use in a pair of wireless bluetooth headphones I'm building. I have not finished the project yet, but over the past 3 weeks I have used this battery to test my circuits and haven't had to charge it yet. It seems that this holds a charge really well and delivers a consistent 3.7 volts. It is rather large which has the potential to create design problems if you are looking to include this in a self contained project, but it is still manageable, especially if you need a thin battery.