Deep Cycle Systems (DCS) DCS deep cycle Lithium Batteries deliver safe lithium phosphate (LFP) & Titanate (LTO) energy storage solutions for a wide variety of applications. Our 12V marine batteries are similar-sized to lead-acid batteries, which makes upgrading to DCS Lithium 12V Batteries a simple task, whilst offering six times the battery life and less than a third of the weight of lead-acid batteries. DCS Lithium Batteries are lightweight yet, due to their superior construction, they are very strong and durable. They are able to withstand extreme levels of vibrations and shocks and are most suited for military, marine & 4WD applications. DCS Lithium Batteries are designed for deep-cycle (cyclic) applications and are completely dry batteries, making them spill-proof, leak-proof, and significantly safer than lead-acid batteries. DCS uses only the latest A grade lithium cell technologies obtained from specialised manufacturers that are well ahead of the industry in the R&D of lithium cell technologies. DCS designs and engineers each battery pack with attention to detail. We have developed our own range of efficient battery management systems (BMS) that work as the brain inside our battery packs, ensuring the maximum service life with precise cell management.