Customer service is horrible. After I placed my order I was promised an ETA of 2 hours but it ended up being 2 days. I tried to contact customer service by phone but ended up on hold for hours before I gave up. I left three voicemails and sent three emails without getting a response over 2 days. Finally, I received a phone call from the service tech on Sunday morning after waiting for almost two days and he was at my house within 5 minutes and did an excellent job of installing a good quality battery for me in about 15 minutes. He told me he just received my order that morning. The battery and the service tech person were great but the customer service is just about the worst I have ever experienced.