"How / where can I get a replacement battery?"에 답변I contacted the Wand Company for the same reason. Seems that when the battery flat lines, some defecting charging bases cannot jump start the charge. The Wand Company is sending me a replacement charging base at no cost. Once the battery is charged, I can use my old charging base as a backup. You can also remove the battery and charge it using a cable and correct charger. Once it has some power, you can again use the charging base to fully charge the battery but do not let the battery to completely discharge from that point.