Going on a dive trip? Planning on a live-aboard dive vacation? Want to be able to dive as often as your computer will let you and take pictures with your SeaLife Sea Dragon Light System? Well the easiest way to do this is with multiple batteries and battery charger units. This charger tray designed for Sea Dragon LED Light Battery (see SKU: SL9831) will charge the 25Wh Lithium-Ion 7.4 volt, 3400 mAh Battery and 7.4 volt, 3100 mAh 23Wh Battery. This tray works with the SeaLife Wall Plug Adapter (SL98312) and will charge the battery in 170 minutes.