Water batteries and maintenance-free batteries, the advantages and disadvantages of the analysis and price differences and what are the precautions?

Watered batteries need to pay attention to the liquid level, add the use of distilled water, it is best not to use the battery activator

Traditional batteries using the manufacturing process is the battery in the grid used in the lead-antimony composition alloy. However, one of the main disadvantages of using such a composition is the charging phenomenon caused by water electrolysis. This is the loss of water due to water electrolysis. According to the relevant information, with lead-antimony alloy battery every driving a thousand kilometers of water loss of about 16-32 grams. So to drive for a period of time to check, is to look at the "lack of water", replenishment fluid is usually used to steam water. I've used normal purified water, and there was no adverse reaction.

In order to reduce water loss, people invented the low antimony and antimony-free grating. Antimony-free grids are made of lead-calcium alloy as battery grids. The use of lead-calcium alloy as the battery grid has the best water retention performance, in the battery can see a big English 'calcium' (Calcium) words, I also wondered, is the battery also lack of calcium. Now I realize that the battery uses a lead-calcium alloy grid.

And the water loss of batteries made with maintenance-free technology is about one-tenth of that of ordinary batteries.

Although maintenance-free batteries in the theoretical service life is much longer than dry-loaded batteries with water. However, the use of calcium-lead structure of maintenance-free batteries on its working environment temperature requirements are more stringent. Usually the optimal temperature cannot exceed 60 degrees Celsius. If more than 60 degrees Celsius will greatly contribute to the corrosion of the grid plate. Although battery manufacturers use some technology to slow down this corrosion, but the high temperature still seriously affect the life of such maintenance-free batteries. In this battery manufacturers have also found that some vehicles are designed so that the battery is located too close to the engine, resulting in a significant reduction in battery life. This is a vehicle design problem.