Make sure you always have back up batteries charged and ready to go with these Goal Zero Rechargeable AAAs and Guide 10 adapter. . Includes four rechargeable nickel metal hydride batteries. Use with your Goal Zero Guide 10 Power Pack adapter included. Batteries last approximately 500 1000 cycles. Guide 10 Power Pack sold separately. Due to federal shipping restrictions regarding products containing lithium batteries, this product can only be shipped to the 48 contiguous states. It cannot be shipped to Canada, Hawaii, Alaska, Catalina Island, Puerto Rico, APO, FPO or international addresses. Thanks for your understanding.