The test results show that(1) the deep cycle life and charge acceptance will be improved considerably if the H_2SO_4 volume is reduced;(2)the compound organic expander composed of humic acid and lignosulphonate improves the utilization of negative active mass at 2 h rate discharge capacity more than any one of them in separate use.

The influence of over deep discharging on property including initial capacity,charge retention and deep cycle life of battery was investigated through valve regulated lead acid battery over deep discharging in different degree.

Effect of boron on the discharge capacity and cycle life of rare-earth-based AB_5-type hydrogen storage alloy;

Measures on improving cycle life of motive power VRLA batteries;

Disscussion on charge acceptance and cycle life of VRLA batteries for electric bicycles;

The influence on C 5 and C 2 of plate thickness and electrolyte additive has been researched and the effect of different discharge modes on cyclic life were compared.

The cyclic test results showed that the battery with proper density and quantity of electrolyte had excellent performance of capacity and cyclic life.

The cycle lifetime of the AA type nickel-metal hydride battery was studied.

The charge-discharge properties and cycle lifetime of Mm xNi 3.

Studies on improving the cycling life of lead-acid batteries;

Effect of positive paste density and tin content of grid on cycling life;

Effects of additives (RSO_3H) on the cycling life of positive electrode in lead-acid batteries;