2V energy storage battery, 2V voltage, from 50AH to 3000AH, high capacity, can be multiple series into high-voltage batteries, suitable for customers who have requirements for installation volume, positive and negative extremes are on one side, easy to install. Widely used in: solar energy system, energy storage system, off-grid power station, outdoor base station, uninterruptible power supply, DC screen, fire emergency system, backup power and so on.