Internal resistance measurement method of VRLA battery
Notice during measurement:
1. Please return to zero before measurement or there will be error in measurement. When the internal resistance value of medium and large battery is measured, please measure the terminal as connecting condoctor. As for the small capacity battery, please measure the buttom of the terminal.
2.Use sonde to make contact with measured part with right angle
3.When the connection part get lose, the internal resistance will increase.
4. The body should not interpose the case pillar of transformer or will be effected by eddy current and can't not measure correctly.
5. When measurement error happand, mutiple times measurement is needed to make sure.