It was found that the fast cycle life of battery was limited by negative plate, but not by positive plate, and deep cycle life was mainly limited by positive plate.

通过铅膏配方试验，发现制约电池快速寿命的是负极板而不是正极板，制约深循环寿命的主要是正极板。

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The results show that when the battery is charged at low current and constant voltage, its failure mode is the sulphation of negative plate and the softening of positive plate;

用优选充电制度，电池失效模式是正极活性物质软化，板栅腐蚀相对较少。

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Nowadays in SLI battery VRLA is just on test. We need solve the instability of negative plate expanders, as well as water loss and thermal run away.

在SLI蓄电池中VRLA 处于试验阶段，需要解决在高温条件下，负极膨胀剂的稳定性，以及失水和热失控问题。

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