Emmesh develops low-cost, low-maintenance, safe, durable, and efficient batteries based on a flow design that uses polysulfide and bromide. The batteries have zero emissions, carbon dioxide, or recyclability problems. They use nonflammable abundant raw materials, with no performance degradation over time, even at high temperatures. They have a long service life (20 years), with low maintenance. The batteries also offer decoupling between power and energy, and low-cost manufacturing at scale. Emmesh's first line of products are for the 5G telecommunications industry. Emmesh's first goal is to make mobile and internet services resilient anywhere, anytime, in any weather. The next applications will target fields such as solar, electricity arbitrage, microgrids, and peak shaving at the grid level. Emmesh batteries aim to facilitate the exponential growth of renewable energies to prevent climate change and avoid growing pollution from fossil fuels.