双登蓄电池充放电使用最佳使用温度25℃，如果外界环境低于0℃，充电系统对双登电池组的充电速度会很慢，建议充电时比平时充电时间要适当延长，或者对电池提前加热到0℃以上再对shoto蓄电池充电速度会明显变快！

 Shuangdeng battery charge and discharge using the best temperature 25 ℃, if the external environment is lower than 0 ℃, the charging system of double battery charging speed will be slow, advise when charging charging time than usual to extend, or the battery heated to above 0 ℃ to early shoto battery charging speed will be significantly faster!