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Building homemade car trickle charger
This looks like a good page...
http://www.batteryuniversity.com/partone-13.htm "Simon#" wrote in message ... There are a couple of products around to maintain a car battery. They work is different but similar ways, the most complicated is the accumate (http://www.accumate.co.uk/OM3CHARGING%20ALGORITHM.htm), however one of the most popular products is the Airflow (http://www.airflow.uk.com/battery-conditioner.htm#2) This seems expensive for what it does "The unit will charge a battery from a minimum of 9 volts to 13.8 volts and then turn off. It will then monitor battery voltage until it drops to 12 volts, through natural drain, and then turn on again to re-charge and exercise the battery to 13.8 volts" Has anyone built such a device? Can it be acheived for less the £40 / US$ 70 |
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