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72 Volt (20S) Battery Voltage Chart - Li-Ion Batteries

Nominal voltage chart for 72V Li-Ion Ebike batteries showing the percentage.

20 Cells x 4.2 Volts/Cell = 84.0 Volts Fully Charged

Voltage (V)​
Percent (%)Voltage (V)Percent (%)Voltage (V)Percent (%)Voltage (V)Percent (%)
84.0​
100​
78.0​
75​
72.0​
50​
66.0​
25​
83.8​
99​
77.8​
74​
71.8​
49​
65.8​
24​
83.5​
98​
77.5​
73​
71.5​
48​
65.5​
23​
83.3​
97​
77.3​
72​
71.3​
47​
65.3​
22​
83.0​
96​
77.0​
71​
71.0​
46​
65.0​
21​
82.8​
95​
76.8​
70​
70.8​
45​
64.8​
20​
82.6​
94​
76.6​
69​
70.6​
44​
64.6​
19​
82.3​
93​
76.3​
68​
70.3​
43​
64.3​
18​
82.1​
92​
76.1​
67​
70.1​
42​
64.1​
17​
81.8​
91​
75.8​
66​
69.8​
41​
63.8​
16​
81.6​
90​
75.6​
65​
69.6​
40​
63.6​
15​
81.4​
89​
75.4​
64​
69.4​
39​
63.4​
14​
81.1​
88​
75.1​
63​
69.1​
38​
63.1​
13​
80.9​
87​
74.9​
62​
68.9​
37​
62.9​
12​
80.6​
86​
74.6​
61​
68.6​
36​
62.6​
11​
80.4​
85​
74.4​
60​
68.4​
35​
62.4​
10​
80.2​
84​
74.2​
59​
68.2​
34​
62.2​
9​
79.9​
83​
73.9​
58​
67.9​
33​
61.9​
8​
79.7​
82​
73.7​
57​
67.7​
32​
61.7​
7​
79.4​
81​
73.4​
56​
67.4​
31​
61.4​
6​
79.2​
80​
73.2​
55​
67.2​
30​
61.2​
5​
79.0​
79​
73.0​
54​
67.0​
29​
61.0​
4​
78.7​
78​
72.7​
53​
66.7​
28​
60.7​
3​
78.5​
77​
72.5​
52​
66.5​
27​
60.5​
2​
78.2​
76​
72.2​
51​
66.2​
26​
60.2​
1​

Assumptions: Your pack uses typical 18650 cells which charge to 4.2V and discharge to 3.0V.

Disclaimer: This chart is a theoretical guide only. No responsibility is taken by for damage occurring from incorrectly charging your battery. Please follow the directions in your user manual. Always charge your ebike battery in a fire proof area with a timer switch to avoid overcharging it. If your battery doesn't reach the 100% voltage listed above, DO NOT force it to go any higher than the voltage that it is charging to.
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