Having spare batteries to run your dive light has some major advantages. If you are planning to go on a live-aboard dive trip they are a must. Keep diving with freshly charged spare batteries and experience no down time between dives, because you have to wait for your battery to be quick charged. The Bigblue battery packs have you covered for whatever model BigBlue you may own. All battery packs use quality lithium-ion battery cells.
Batcell 26650: this Lithium-Ion cell is used for the AL1800XWP and the AL2600XWP (The Black Molly series). The battery has a custom-designed protection circuit which provides a variety of protection features built into the battery. mAh 5000