Why should lead-acid batteries be charged by three-stage charging method?

What is three-stage charging of lead-acid battery?

The charging method of lead-acid battery should be divided into three stages, namely, constant current charging-constant voltage charging-trickle charging.

Constant current charging stage: 1.7A current, charging to 13.4V cut-off.

Constant voltage charging stage: 14.7V (single battery), charging time 3 hours, cut-off current 0.35A A.

Trickle charging stage: 13.9V (single battery), when the charging current is less than 100mA, it is considered fully charged.

Better Technology Group Limited：

Turn-Key Solutions for Battery Whole Plant Equipment

Why should lead-acid batteries be charged by three-stage charging method?

e ability, so we can take advantage of this feature. High current charging can make the battery get enough electricity quickly to save time and electricity. When the battery is charged to a certain degree, to prevent the voltage from exceeding the limit value, it should be automatically transferred and limited to a constant voltage value, so as to limit the voltage from continue rising, and prevent the voltage from exceeding the end of charging and damaging the battery plate. But after this charge, due to the inhomogeneity of the materials on the battery plate, some of the materials can’t be completely reduced. If these materials are in sulfide state for a long time, they may become permanent lead sulfate which can no longer be reduced, and the capacity of the battery will be damaged and gradually reduced. Therefore, at the end of charging, trickle charging is needed to reduce a small amount of sulfide hidden in the deep inside as much as possible, make the charging level of the plates in one battery uniform from inside to outside, and the plates of several batteries can be uniform as much as possible.

In recent years, with the development of China battery industry and the dominance of national policies, the industrial concentration of lead-acid batteries in China has reached a relatively high level. Better Technology Group Limited, as a rare "High-quality export operation platform for  battery industry" in China, it integrates general contracting system integration services such as R&D design, project planning, complete sets of equipment, installation and commissioning, technical output, technical training, and after-sales support. BETTER is committed to providing global customers with turnkey solutions for battery manufacturing full resource operations and complete sets of equipment (including equipment, batteries, raw materials, auxiliary materials, related accessories, battery production technology output and other related businesses), using stable and efficient Chinese battery manufacturing technology capabilities to lead customers' battery projects to rapidly increase production and expand. Which completely solves the problems of long project construction period, heavy technical docking tasks, unreasonable production line matching, and cumbersome business communication caused by customers purchasing from multiple places.