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
21%
5%
60%
11%
60
flagNorway
19%
10%
58%
10%
46
flagMalaysia
22%
12%
57%
7%
40
flagSwitzerland
26%
3%
57%
11%
26
flagPakistan
18%
10%
56%
10%
55
flagGermany
21%
7%
53%
17%
276
flagSweden
13%
6%
53%
25%
43
flagPoland
23%
11%
52%
12%
20871
flagItaly
22%
11%
52%
13%
36
flagUkraine
20%
12%
52%
16%
25
flagCanada
21%
8%
51%
17%
78
flagthe United Kingdom
24%
10%
49%
13%
585
flagBelgium
24%
12%
48%
16%
25
flagAustralia
20%
14%
47%
15%
63
flagthe United States
26%
11%
45%
13%
1016
flagIndia
24%
13%
45%
13%
583
flagthe Netherlands
30%
8%
45%
16%
73
flagthe Philippines
33%
16%
40%
8%
62
flagRepublic of Ireland
25%
9%
38%
26%
52
flagUnknown
34%
19%
32%
12%
1190

Gender

men41%
women40%
acid leak
29%
27%
polarization switch
14%
17%
explosion
41%
40%
sulfurization
14%
14%

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