4Test
diversified index of material 4Test
diversified index of lead powder 4Test
diversified index of lead paste 4Test
diversified index of electrode plate 4Test
diversified index of production
Laboratory
4Test
the battery's capacity 4Test the battery's endurance 4Test
the discharge of battery 4Test the start of battery
in low temperature 4Test
the battery when it is overcharged or over discarged 4Test
the battery's oxygon cycling 4Test
the leakage of battery
