That worked great. Very happy with quality. Best wall bike rack ever and for the price. I have no trouble keeping the strap on my heel. I dont remember how many days one charge last. I am very pleased with the construction and the performance of this bike rack. They suit me quite well and work better than expected. I listen to podcasts all the time, and at the 80% volume level, this is barely loud enough. Im not rough on my dress/work shoes either. Just as described and arrived on time specified