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
flagMalaysia
21%
15%
57%
6%
33
flagSweden
10%
5%
56%
27%
37
flagItaly
20%
8%
55%
14%
34
flagGermany
21%
6%
53%
18%
243
flagPoland
23%
10%
52%
12%
17891
flagUkraine
17%
13%
52%
17%
23
flagBelgium
21%
8%
52%
17%
23
flagCanada
22%
8%
51%
18%
72
flagthe United Kingdom
23%
10%
50%
13%
533
flagPakistan
21%
14%
50%
9%
42
flagIndia
24%
12%
46%
14%
538
flagthe United States
27%
12%
45%
13%
978
flagthe Netherlands
29%
9%
45%
14%
61
flagNorway
25%
12%
45%
16%
31
flagAustralia
22%
14%
44%
16%
54
flagRepublic of Ireland
26%
8%
40%
26%
50
flagthe Philippines
35%
16%
37%
9%
54
flagthe United Arab Emirates
22%
22%
36%
18%
22
flagUnknown
35%
19%
33%
10%
686

Gender

men44%
women41%
acid leak
27%
27%
polarization switch
12%
17%
explosion
44%
41%
sulfurization
15%
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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