I have been using a set of four Panasonic 18650 LiPo batteries in a 2-cell stack configuration in Wall-E2, my autonomous wall following robot. for a little over three years now, and they are starting to show their age. So, I decided to replace these

with these

Three years younger, and with another 100 mAH (rated, at least).

Here’s a photo record of the process of changing out the batteries

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Stay tuned,

Frank