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Jacob Gustavsson

DIY Ikea Eneby battery cup

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Ikea made a bluetooth speaker for which you can buy a 14.4V, 37Wh battery, costing about $20.

I made a 3d-printed holder for it so it can be used to power a sound bag and other equipment.

These packs can be charged in the speaker (the smaller model) itself or with smart chargers like the Imax B6.

 

I've mentioned these batteries in Allen Rowand's DIY BDS topic, and being inspired by his contributions to the location sound DIY community I wanted to add to it as well.

 

Speaker

https://m2.ikea.com/us/en/p/eneby-bluetooth-speaker-white-40401393/

 

Battery

https://m2.ikea.com/us/en/p/eneby-battery-pack-20414264/

 

Thingiverse link

https://www.thingiverse.com/thing:3681131

 

IMG_20190602_175024354.jpgIMG_20190606_154030888.jpgIMG_20190606_151850709.jpg

IMG_20190606_151908030_BURST001.jpg

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Great work, thanks for posting. Are yo using the Imax to charge? Same battery contacts as the output (or the other 2)? I.e you can use the holder you made for charging purposes as well?

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1 hour ago, daniel said:

Great work, thanks for posting. Are yo using the Imax to charge? Same battery contacts as the output (or the other 2)? I.e you can use the holder you made for charging purposes as well?

Yes, the Imax B6 charges with the cup, but no balance charging. The battery has four pins which according to some teardown images seem to be plus, temperature resistance, ID resistance and minus, so no access to the individual cells. I suspect the batteries have some sort of BMS, but not sure what kind.

I tested charging 500 mA with my Imax at constant two amps for fifteen minutes and the charging voltage varied about one volt above the battery charge.

 

IMG_20190606_155505697.jpgIMG_20190606_154024760.jpg

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Way to go!  Chargers are really expensive and I'm not really sure why.  I guess they keep you from burning down your house but how complicated do they really have to be.  The battery cup looks great!

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