Coulomb meter is measured to electric motor car battery

The utility model provides a coulomb meter is measured to electric motor car battery, includes the luminous strip of singlechip, resistance R1, resistance R2, LED, the singlechip is anodal to link to each other with the battery is anodal through resistance R1, the singlechip negative pole passes through resistance R2 and links to each other with the battery negative pole, the singlechip links to each other with the luminous strip of LED. The utility model discloses discharge curve and charging curve by lead -acid batteries, if owing to adopt the singlechip sampling, just know the in service behavior that lead -acid batteries holds very easily in the discharge process, the singlechips of 10 AD samplings have been introduced to this scheme, calculate the capacity of battery through the instantaneous pressure drop to battery voltage, and analytical calculation and instruction simultaneously is when battery capacity is less than the warning capacity, through the warning of twinkleing of the luminous strip of corr