Auto battery
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===Lead acid=== | ===Lead acid=== | ||
Most used by far is the "flooded lead acid" battery. Also known as a "wet cell" battery. It is relatively cheap to manufacturer and offers an adequate service life. However, they are heavy and relatively inefficient. | Most used by far is the "flooded lead acid" battery. Also known as a "wet cell" battery. It is relatively cheap to manufacturer and offers an adequate service life. However, they are heavy and relatively inefficient. | ||
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+ | <table border="1" cellpadding="2" cellspacing="0" ><tr bgcolor="#CCCCFF"> <td width="251"> | ||
+ | '''Battery Voltage''' <br> 12V battery after car<br> is off for one hour</td> | ||
+ | <td>'''Relative charge'''</td> </tr> | ||
+ | <tr> <td>12.6 V</td> | ||
+ | <td>100%</td> </tr> | ||
+ | <tr bgcolor="#eeeeee"> <td>12.4 V</td> | ||
+ | <td>75%</td> </tr> | ||
+ | <tr> <td>12.2 V</td> | ||
+ | <td>50%</td> </tr> | ||
+ | <tr bgcolor="#eeeeee"> <td>12.1 V</td> | ||
+ | <td>25%</td> </tr> | ||
+ | <tr> <td height="22" width="251"> | ||
+ | Less than 12 V</td> | ||
+ | <td height="22">Dead</td></tr></table><br> | ||
===Gel cell=== | ===Gel cell=== |