Fantastic speaker but mine won’t charge!

I really like this speaker. It is very well made and extremely durable. The sound is loud enough to hear when my boyfriend takes it to the basketball court! I love everything about this speaker except for the charge. I have no idea if my speaker is defective or if I am doing something wrong but it will not hold a charge. I have charged it while it was off all day and when it was on and neither way will charge it. I take it to the basketball court and can only listen to it for 10 minutes until it dies. I have tried other wires and nothing works. I’m so disappointed because I love this speaker if it worked but sadly I can’t figure it out.

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