Sunday, March 18, 2012

Homemade 12V to 48V DC-DC Converter Battery Charger for Electric Scooter/Bike

Homemade 12V to 48V DC-DC Converter Battery Charger for Electric Scooter/Bike Tube. Duration : 6.07 Mins.


This is a PC board I made so I can charge a 48V seal lead acid battery from any 12VDC source. This design is simple and uses an off-the-shelf audio crossover coil. It charges my battery from a 12V source that gets switched on once the sun goes down. In the morning my batteries are ready to go and it didn't cost me anything. Energy from the sun. However I can use with and 12V source that can provide 2-3 amps of power. There is a special circuit that will stop the SMPS once the battery level low around 11 volts. Next day the sun comes up and charges the 12V battery.

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1 comment:

  1. For led acid batteries if you charge to 16.2 volts and stop the battery will last a life time because the plates never plate out! Its a fact of battery chemistry that was known 100 years ago, but charging to 12 or 14.4 volts will kill the battery time because it builds layer after layer on the plates with incomplete charges. It sells batteries is why they do it. Google around, there is a video called battery secrets that explains it all if you don't want to dive into the text books.

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