1, suppose it is using 72V200AH battery, 2, charging once, power consumption =72*200*80%*130%*150%\/1000=22.464 degrees of electricity, 3, charging, the battery is to convert electrical energy into chemical energy, conversion efficiency of about 50%, 4, discharge, the battery can only discharge 80% of electricity, overdischarge, It will lead to shortened battery life, battery overdischarge, its life is shortened by 80%, 5, the average efficiency of the charger is about 70%.
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0.5 degree
Assuming there is no charge left in the battery, then the theoretical calculation of the charging degree: 72 volts X32 amps. Hour =2304 watts. At 2304 watts. Hour =2.304 degrees. The charging degree calculated above, plus the power consumption of the charger itself is about 0.5 degrees (the efficiency of the switching power supply and the transformer rectifier power supply is different), then the power consumption after the battery is full is about 2.8 degrees.