Purchased 2 years ago and it just doesn’t hold charge for more than 5...

Purchased 2 years ago and it just doesn’t hold charge for more than 5 minutes. It worked for maybe the first 10 months but considering the settings are 10, 20 and 30 minutes there’s no way that it can be used. The wire connection is also very loose and switches itself off. Waste of money and wouldn’t recommend at all.