1. Plate grid corrosion
Phenomenon: Measure some single cell or the whole battery without voltage or low voltage, view the internal plate grid of the battery is brittle, fractured, or completely shattered.
Formation causes: high charging current, charging voltage is too high caused by overcharging, or long-term use in high temperature conditions, accelerating the corrosion rate of the plate grid.
2. Thermal runaway
Phenomenon: battery bulge
Formation causes.
(1) battery less acid.
(2) charging voltage is too high.
(3) charging current is too large.
(4) discharge without protection (over discharge). 3.
3. acid leakage
Phenomenon: there is residual acid on the battery cover piece, or outside the pool case with acid
Formation causes.
(1) cell shell rupture; (may be due to impact)
(2) the battery is inverted.