1. STANNOUS SULFATE (SnSO4)
It can improve the n value of PbOn in the screen active material interface,
so as to prevent the early capacity loss. As a positive active material additive,
the utilization ratio of positive active material can be effectively improved,
especially in the condition of high magnification discharge. As an electrolyte additive,
the process of deep discharge of lead acid batteries can be strengthened,
and the corrosion speed of the positive plate is inhibited.

2. HUMIC ACID
Humic acid is a macromolecular light based aromatic antelope acid,
which is mainly extracted from peat, lignite, and weathered coal.
Humic acid contains active groups such as hydroxyl group, antelope group,
methoxy group and phenol hydroxyl group, and has good adsorption,
ion exchange and complexation capabilities. It is adsorbed on the surface of
the electrode to prevent the formation of dense lead sulfate layer,
so that the negative electrode maintains the active structure of spongy lead.
Humic acid can improve the low temperature discharge capability
and battery cycle performance of the lead negative electrode

