Alternator – How can a motorcycle anternator be used to charge a bigger Battery

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#1 21678846 30 Jan 2018 19:33

Sachin Pawar Sachin Pawar

Anonymous

Post #1
21678846 30 Jan 2018 19:33

i have a motorcycle engine with alternator. i assume its output is 13-14 V though i m not sure about the current (charging current is 0.3A) This is used to charge a 12V 3 AH battery. I wanted to know what modifications i have to make if i need more charge from the same alternator? I want to charge a 20AH Battery.
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#2 21678847 31 Jan 2018 07:20

PeterTraneus Anderson PeterTraneus Anderson

Anonymous

Post #2
21678847 31 Jan 2018 07:20

If the 20 AH battery and the 3AH battery are both 12V lead-acid batteries, you don't have to make any changes. The 20 AH battery will take 20/3=6.7 times as long to charge as does the 3AH battery.
#3 21678848 31 Jan 2018 15:44

Sachin Pawar Sachin Pawar

Anonymous

Post #3
21678848 31 Jan 2018 15:44

Thanks Peter. I need to charge in a very short time, like in 1 hour.
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