What may happen to a lead battery when overcharged?

acid leak
polarization switch
explosion
sulfurization
Any lead­-acid battery system when over­charged will produce hydrogen gas by elec­trol­y­sis of water. If the rate of over­charge is small, the vents of each cell allow the dis­si­pa­tion of the gas. A severe over­charge may produce a flammable con­cen­tra­tion of hy­dro­gen.

Answers distribution

acid leak
polarization switch
explosion
sulfurization
answers
flagFrance
18%
5%
62%
12%
58
flagNorway
19%
9%
58%
12%
41
flagMalaysia
21%
15%
57%
6%
33
flagNigeria
13%
17%
56%
13%
23
flagGermany
21%
7%
53%
16%
265
flagSweden
14%
4%
53%
26%
41
flagPoland
23%
11%
52%
12%
20195
flagItaly
22%
11%
52%
13%
36
flagUkraine
20%
12%
52%
16%
25
flagCanada
22%
7%
51%
18%
77
flagPakistan
20%
13%
50%
11%
44
flagBelgium
25%
8%
50%
16%
24
flagthe United Kingdom
24%
10%
49%
13%
569
flagAustralia
21%
13%
49%
14%
61
flagIndia
24%
13%
46%
13%
556
flagthe Netherlands
30%
8%
46%
14%
69
flagthe United States
27%
12%
45%
13%
992
flagRepublic of Ireland
25%
7%
39%
27%
51
flagthe Philippines
35%
15%
38%
8%
57
flagUnknown
35%
19%
32%
12%
1146

Gender

men41%
women40%
acid leak
29%
27%
polarization switch
14%
17%
explosion
41%
41%
sulfurization
14%
13%

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What may happen to a lead battery when overcharged?
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Illustration: Charles Williams
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