钠电池自放电率高吗？

Is the self-discharge rate of Sodium-ion Battery high?    

钠离子电池自放电率极低，静置保电能力优异，适合长期静置备用的储能场景。自放电是电池静置过程中无负载的自然电量损耗，钠电池的月自放电率仅2%-4%，远低于铅酸电池、镍氢电池，与优质锂电池持平。这意味着钠电池充满电后，长期静置存放电量流失极少，数月存放仍能保留大部分电量，无需频繁补电维护。完美适配电网储能电站、基站备电、户外备用电源、离网光伏储能等需要长期静置、随时待命的场景，大幅降低运维工作量和补电成本。

Sodium-ion Battery has an extremely low self-discharge rate and excellent static power retention capacity, which is suitable for long-term static backup energy storage scenarios. Self-discharge refers to the natural power loss of the battery during static storage without load. The monthly self-discharge rate of sodium batteries is only 2%-4%, which is much lower than that of lead-acid batteries and nickel-metal hydride batteries, and equal to that of high-quality lithium batteries. This means that after the sodium battery is fully charged, the power loss is very little during long-term static storage, and most of the power can be retained after several months of storage, without frequent recharging and maintenance. It perfectly adapts to the scenarios that need long-term static storage and standby at any time, such as grid energy storage power stations, base station backup power, outdoor backup power supply, and off-grid photovoltaic energy storage, which greatly reduces the workload of operation and maintenance and the cost of recharging.