Jack,
Thank you for sharing your feedback on the NiteHowl LED Safety Necklace. I am afraid the product you linked your review from is not rechargeable. If you are referring to the rechargeable version of the NiteHowl and it is not working correctly, we would be happy to replace that for you under the Nite Ize Worry Free Guarantee. If you have further questions, please contact customer service at info@niteize.com or at 800.678.6483 8-5 M-F MST.