ELECTRICITY STORAGE DEVICE AND ELECTRICITY STORAGE MODULE

Electricity storage device includes: outer can having opening; electrode body housed in outer can; sealing plate that closes opening; a pair of output terminals arranged on sealing plate; current collector by which electrode body are electrically connected to the pair of output terminals and electrode body holder that is housed in outer can, includes flat plate extending in a direction intersecting a direction in which each of electrode body and sealing plate are arranged, and is fixed to sealing plate to suppress displacement of electrode body, electrode body holder having an insulating property.