Connecting in 'Series' = Double Voltage, Same capacity in amp hours (ah)
Example: Batt.1 (100ah/12V) + Batt 2 (100ah/12v) = Battery Bank (100ah/24v)
Connecting in 'Parallel' = Same Voltage, Double amp hours (ah)
Example: Batt.1 (100ah/12V) + Batt 2 (100ah/12v) = Battery Bank (200ah/12v)
The battery switch should be wired so it is in Parallel when switched to BOTH. If it is wired so it is in Serial when switched to both, that would make the 12v system a 24V system. I would not expect a 12v device to appreciate being on a 24v system and would think it could potentially be a costly mistake.
Last edited by shrew; 01-09-2012 at 12:16 PM. Reason: Example
Shrew: (noun) ˈshrü'
Any of a family (Soricidae) of small chiefly nocturnal insectivores related to the moles and distinguished by a long pointed snout, very small eyes, and short velvety fur.
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