Just got a few sets of fairy lights myself, and the Amazon page says 3 AAA's, they're actually 3 AA's...go figure. I was also hesitant to use the newer ones that use the CR2032's but these ones seem fine to me. I just put them on and they look great. https://www.amazon.com/gp/product/B015T4XRY2/ref=ask_ql_qh_dp_hza