Description: This is a very small, extremely light weight battery based on the new Polymer Lithium Ion chemistry. This is the highest energy density currently in production. Each cells outputs a nominal 3.7V at 110mAh! 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: Due to the requirements of shipping these batteries, orders may take longer to process and therefore do not qualify for same-day shipping. Sorry for any inconvenience this may cause.
Note: Be careful with the JST connectors. They can stick in pretty good and tugging on them can damage the connector. Check this tutorial for an easy way to remove them safely.
Based on 8 ratings:
2 of 3 found this helpful:
I ordered this part about 8 months ago, and it worked perfectly for my application. So a month ago I ordered a bunch more, but the new part is different– they must have changed the over-current regulation chip or something, because these new batteries don’t power the motors that ran flawlessly using the old batteries. Lame! And they didn’t assign the current stock to a new part number or make any kind of note that the batteries had changed. Almost $40 wasted :-(
Hi, I don’t show any record of this part changing in almost 4 years. I’m sorry it didn’t work in your application as you expected. I’ll contact you directly to see what we can do for you. Thanks
Like a previous reviewer, I purchased a couple of these batteries awhile ago, and they worked flawlessly for my small servo setup. (Voltage boosted up to 5V.) After buying a bunch more recently, they are no longer performing the same.
Also, a few of them (I bought 15) don’t even charge with Sparkfun’s own Li-Ion charger!
So far, I’ve completed 5 separate projects and in all 5 I’ve used this battery. Haven’t had any issue with them yet. Because they’re small - they’re SO much better than conventional batteries for my projects. I’m actually ordering more of them tonight.
0 of 2 found this helpful:
This is a nice small battery. It has improved since the last time I bought them with smaller, less stiff leads.
I asked for ground shipping, since that’s the only was it could safely ship. However, even though it showed as in stock, it took almost a week before it was shipped. It needed special paperwork, but nobody seemed to get to doing it.
Using a few of these to power an arduino model rocket payload. They are handy, but you have to be careful - you can’t charge these with the sparkfun basic charger. You need to use the bigger one (PRT-12711) set to 100mA. The basic one will kill the battery as it supplies too much current - They aren’t very specific about that anywhere.
For who need a battery for a small small project, I indicate
I got a few of these months ago and they seem to be working fine. I’m a bit of a novice at this new electronics hobby of mine so these were a simple, easy solution to the energy requirements in the first few projects I did. Now I just have to figure out if I can connect them in series and still recharge them. :)