LED camp lamp

Arduino mini
https://detail.tmall.com/item.htm?id=527292766480&ali_refid=a3_430583_1006:1110452247:N:pro%20mini%20328:fbde9a670acba58534ab4566928cfb0f&ali_trackid=1_fbde9a670acba58534ab4566928cfb0f&spm=a230r.1.14.1.ZHgcwB

Battery charger
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.ly2j7B&id=530655685650&_u=f27f148ga256

DC dack
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&id=531601744939&_u=f27f148gb5e6

Battery
https://item.taobao.com/item.htm?spm=a1z09.2.0.0.Ux0baR&i