Car Battery Max Charge Voltage. Charging process from 0 to 100 SOC is divided into two main phases. Li-Ion Charging Battery Characteristics 10 Current Voltage Phase of Charge Time Trickle Constant Current CC Constant Voltage CV Done Battery Cutoff Current Battery Max Current Battery Min Voltage Battery Max Voltage NOTES.
Similarly 6V and 24V AGM batteries should have voltages of 63565V and 25426V respectively. Plot not to scale. Charging tips reviews and photos from the EV community.
Plot not to scale.
When a car drops for instance from 126 to 120 there will be 75 difference. The ideal car battery voltage with the engine running is between 137 and 147V. Constant Voltage Charging This method charges a battery at a maximum voltage typically from 138V to 15V and a maximum current depending on the charger specification. If the battery isnt fully charged it will diminish to 124V at 75 12V when its only operating at 25 and down to 119V when its completely discharged.
