battery help charging etc

billyboya

Esteemed Pedelecer
Aug 10, 2016
1,031
88
72
uk
I have a 24v electric bike as shown in picture below





it takes 2 of these 12V batteries





My question is if i have travelled say 5 miles, how long a charge would it need


also I have 2 old batteries which are not much good now but how can i check with a multimeter if the batteries are charging ok and holding the charge. what settings do i put multimeter on
 

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