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This is an incredibly simple two cell 18650 Battery Holder. When someone thinks of 18650 Cells they tend to think of flashlights first, which is fair since that is what they have been primarily used for. However, with this battery holder you will gain the ability to incorporate 18650 cells into applications like robotics or prototyping by simply dropping one into this device and attaching the leads, that's it.
Every 18650 Battery Holder is equipped with two 6" cables for power and ground, each have been terminated with bare wire leads.
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: Noob - You don't need to reference a datasheet, but you will need to know basic power requirements.
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Based on 4 ratings:
I installed the batteries and it worked fine. I tried to remove the batteries and it was difficult until removed the wings. It would be fine if the batteries remained installed.
Good construction, delivered on time. The batteries are held in tightly so much so that they are difficult to remove.
Ordered two of the 18650 batteries and THIS battery holder. It is a VERY tight fit. But it does work ok.
I just bought 4 for my project as I only had one holder from another kit and I needed 5. When I tried to put in a 18650 battery, it wouldn't fit! The new holder (case) is 3 MM to short when compared to the one that works. Unfortunately I will need to return the holders and go find another supplier. First time I've ever had an issue with Sparkfun. I think this one slipped through the cracks.
Have you contacted our technical support @ firstname.lastname@example.org about a potentially mis shipped item? I just went down stairs and tested 20 of these with our 18650's and while they were quite tight to get out, all of them went in easily. Tech support might be able to get you straightened out with the proper battery holders that meet your 18650 requirement.