17/11/2021
▶ GEM Battery
FMA of GM12-100HR (12V100AH/10HR) with tested capacity about 107Ah/10HR with dimension 330*173*220 mm and weight 33.0KG/PC.
It is a High-Rate-discharge designed battery specific for project 430W/[email protected]. One of 1200 supplied battery was failed with OCV 10.71V, FMA was carried out.
Short-circuit was found and damage at the corner between one piece of positive plate and the next negative plate. Obviously the direct contact between positive and negative plates would result in short-circuit and damage the battery internal cell connections. The customer won't see the damage or incapable to see it because the battery is sealed structure, the user might not have battery-related knowledge and there is no suitable tools to open the battery and check the plates status one by one.
A hole penetrated through the AGM separator punched by the burr like a tiny thorn on the surface of the plate-which was not well brushed and treated. GM12-100HR is designed for High-Rate discharge purpose, more number of plates were stuffed into the battery and cooperating with thinner AGM separators. The burr on the plate surface was compressed to stick through the AGM and get direct contacted with another plate. Shall avoid such short-circuit under higher assembly pressure.
Well learn from it, GEM Battery is competent to provide high level R&D on a better assembly technology of AGM Batteries and bring our customers trouble-free products.
Distributors and OEM business are warmly welcome.
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