@mfirestar the very first thing I would do is to replace the battery. It is most likely no longer holding/accepting a charge. Once you have a new battery installed, re-evaluate. If nothing else, you will at least have a known-well place to start further troubleshooting
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[guide|52867]
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[guide|52867] and you can get the battey from here https://www.ifixit.com/products/bose-soundlink-soundlink-2-3-soundtouch-20-battery
Your power supply is okay to use on it. For as long as the polarity matches.
@mfirestar the very first thing I would do is to replace the battery. It is most likely no longer holding/accepting a charge. Once you have a new battery installed, re-evaluate. If nothing else, you will at least have a known-well place to start further troubleshooting
[guide|52867]
Your power supply is okay to use on it. For as long as the polarity matches.