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Old Dec 06, 2002, 08:01 AM
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United Kingdom, Bracknell
Joined Nov 2000
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FWIW I just use two 12V batteries in series (giving 24V) which works fine and allows me to charge without mains supply. IIRC it's rated for up to 26V input. The minimum input voltage needed for 3 cells is covered in the instructions, think it is 15V.
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