They are LiPo Batterys. Ive had issues when i stored a device, the battery swelled. I beleive its from over discharge and the chemical composition changes over time, thus causing it to swell. This link might help explain better. [https://www.rcgroups.com/forums/showthread.php?1176509-Why-do-LiPo-packs-swell]
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They are LiPo Batterys. Ive had issues when i stored a device, the battery swelled. I beleive its from over discharge and the chemical composition changes over time, thus causing it to swell. This link might help explain better. [https://www.rcgroups.com/forums/showthread.php?1176509-Why-do-LiPo-packs-swell]