You might have overfilled the battery with electrolyte fluid. Overfilling can cause the battery to leak from the caps as there's not enough space for the electrolyte to expand when charging.
Incorrect Electrolyte Density:
If the electrolyte density is too high, it can cause excessive gassing and pressure buildup within the battery, leading to electrolyte leakage from the caps.
Excessive Charging:
Charging the battery for too long or at a high charging rate can generate excessive heat, causing the electrolyte to expand rapidly and leak out.
Damaged Battery:
If the battery has internal damage, such as cracked cell plates or a faulty vent system, it may not be able to handle the charging process correctly, resulting in electrolyte leakage.
Defective Charger:
A malfunctioning charger can provide an incorrect charging voltage or current, leading to electrolyte leakage.
