This Titan8 Series Lithium Titanate Oxide (LTO) series uses a cell that is designed to maximize capacity and deep cycling abilities. They has double the amount of storage energy but only half of the instant discharge energy. This gives it double the capacity rating, but half of the wattage rating.  The built in 2/0 bussing allows up to 4 Positive and 4 Negative hidden direct connections to each module without the need for any external exposed bussing, while still leaving two easily accessible top terminals and four series or parallel expansion terminals to easily build a bank of nearly any configuration from 14V, 28V, or any configuration imaginable.