A cracked battery case for the Yuasa YT7B-BS (often related to the YTSTC01 part family) is a critical safety issue that typically requires immediate replacement rather than repair
Charging can lead to thermal runaway, fire, or toxic gas release. Isolation: ytstc01 battery cracked
If a charger malfunctions or is set to a high voltage, it can cause "gassing." While AGM batteries have relief valves, excessive internal pressure can cause the case to swell and eventually crack at the seams. A cracked battery case for the Yuasa YT7B-BS