Battery in the process of use will appear: charging process battery fever, and fever serious phenomenon, and even some batteries will appear expansion. In severe cases, the indicator light stays in one state while the charger is charging. In this case, the battery is so dehydrated that it's basically on the verge of being scrapped.

Why is the battery short of water?

At present, most batteries used by electric vehicles are common maintainable batteries, and a few are valve-controlled sealed batteries. These batteries are "dry batteries", which can only be seen by the naked eye and are very wet, and will not see the liquid level. Often overcharge, high temperature will make the battery water shortage.

At this stage, more and more people will consider automatic hydration, reduce safety risks, improve work efficiency. Then the following two hydration tools can be considered. A set of professional hydration tools can be safer and more efficient in operation:

1. The battery watering gun, one key water tool, can be one key water, full water induction stop, can effectively ensure the consistency of the water level, there is no need to worry about the problem of uneven water. It can effectively improve the maintenance efficiency of water addition and ensure the consistency of battery unit characteristics after water addition and maintenance. Improve battery efficiency and service life.

2.The battery automatic water refill system can comprehensively replace the manual maintenance operation of the battery water, real-time monitoring of the battery water shortage, automatic water refill, full water induction stop, after installation can keep the electrolyte level in a healthy state, to ensure the battery electrolyte characteristics stable and balanced, optimize the use efficiency of the battery equipment, prolong the service life of the battery.

What water to add to the battery needs to be determined according to the specific situation:

1. maintenance-free battery does not need to fill liquid.

2. water bottle liquid, need to choose according to the specific gravity of the battery electrolyte:

a. The electrolyte must be prepared with chemically pure sulfuric acid (or special electrolyte) and distilled water. Electrolyte density is generally 1.25-1.29g/cm3 (at 15°c). Industrial sulfuric acid and general water, because of impurities such as iron and copper, will cause self-discharge and plate damage, can not be used for batteries.

b.battery almost no electricity, electrolyte specific gravity is not less than 1.19, add liquid, choose to add distilled water to the lowest scale near the line, and then add pure sulfuric acid (or special electrolyte), so that the specific gravity is about 1.2, the amount of liquid does not exceed the upper limit scale.

c.After the electrolyte is injected into the battery, let the battery stand for 3-6h, and charge it only when the temperature of the electrolyte is lower than 35°c. The charging time is about 3-4h. In the charging process, when the battery single cell voltage rises 2.4v, the electrolyte begins to appear more bubbles, then the charging current should be halved. After charging, discharge test should be carried out to avoid the appearance of vulcanization damage of the battery is only surface charging, the actual can not be used. So before charging to observe the battery if there is sulfide condensation, should be replaced.

d.When full, the electrolyte specific gravity is adjusted to: when the room temperature is 30-40°c, the electrolyte liquid pair density is 1.270; At 20-30°c, the liquid pair density is 1.280. Below 20°c, the electrolyte liquid pair density is 1.290.

Hubei Lham Energy Technology Co., Ltd. has been focusing on battery related accessories industry, Lianhong has always focused on battery accessories, supporting related business, in the field of safety, convenience, maintenance of automotive battery, industrial battery has deep technical accumulation and practical technology patents. In view of the pain points of lead-acid battery water replenishment in the market, our company has conducted in-depth research and developed a series of complementary products dedicated to battery water replenishment maintenance.