Excavator Battery Maintenance
(1) Maintain a High Electrolyte Level
According to operating requirements, the electrolyte level should be 10-15mm higher than pole plate. In order to check this, you can insert a 150mm long glass tube (inner diameter: 4～6mm) vertically into the filling opening until it is in contact with top edge of the pole plate, then press the upper opening of the glass tube with your index finger and take the tube out with your thumb and ring finger. The electrolyte height in the glass tube is the exact height you need. If this height is less than 10mm, you'd better add a certain amount of distilled water timely. Please don't add any liquid like spring water, river water and tap water, as well as dilute sulphuric acid.
(2) Clean the Yellow-White Pasty Mass off the Battery Shell
The yellow-white pasty mass on the battery shell is caused due to electrochemical corrosion of electrode pole around which the sulfuric acid is splashed. The white mass is lead sulfate, and the yellow mass is ferric sulfate. The strong corrosiveness and great electric resistance may result in poor conductivity of the battery. To avoid this, you can use cotton yarn (which has been immersed in alkaline water or soda water) to clean off the splashed electrolyte. If there is any oxide in the gap between the pole and the conductor joint, please scrape it off.
(3)Periodic Boost Charge
Generally, the storage battery should be charged within 24 hours if it is flat; for unused machines, 1 time boost charge of their battery is required every month; 1 time boost charge of the battery which is in use is required every two month. (4) Regularly Inspect the Density of Electrolyte
Electrolyte density should be in accordance with the specific season and other conditions. For example, the density of electrolyte is relatively higher in winter.