Maintenance free lead-acid battery
MAINTENANCE-FREE LEAD-ACID POWER BATTERY
Valve controlled closed lead-acid battery
Batteries cover:protect the liquid and dust from the cover
Insurance valve:protect the gas expansion when charging.
Double pole:using the acid-pro of insulation in the edge of positively pole, every pole could afford circuit current independently.
Lead-acid using problem
The acid liquid has corrosive
Add acid liquid
Cleaning check regularly
Measuring the concentration of acid liquid
Maintenance Free/Lead-acid Battery
Valve controlled closed lead-acid battery
The study of valve-regulated sealed lead-acid storage battery used starting battery was outlined
lower maintenance
no need add acid liquid
no need measuring concentration