Posted by John T on January 15, 2012 at 06:20:06 from (71.52.112.80):
In Reply to: 6 volt in series posted by JimS on January 14, 2012 at 20:36:19:
Jim, I will first answer your specific questions:
QUESTION How should 6 volt batteries be wired in series?
Series wiring is when the + of one battery is tied/connected to the - of the other,,,,,,,theres 12 volts (6 + 6) across the outer (untied) series sum + of one battery - of the other,,,,,,,the 12 volt source and 12 volt load is across the + of one battery thats NOT the tie point above and the - of the other battery thats NOT the middle tie point above i.e. 6 + 6 = 12 volts when wired in series.
QUESTION When wired in series and place on a charger, should only a 6 volt charger be used?
Its okay to use a 6 volt charger to charge each individual 6 volt battery one at a time AND YOU WANT EACH EQUALLY CHARGED WHEN FINISHED
HOWEVER
You can use a 12 volt battery charger across BOTH series batteries so they get charged at the same time and at the same current
QUESTION If jumped, should it only be jumped by another 6 volt?
If jumped I would use a 12 volt jump across BOTH series batteries versus a 6 volt jump to only one 6 volt battery. If you only jump one 6 volt battery and the other one is weak the net total supplied current isnt any greater then the weaker battery can supply THATS NOT A GOOD WAY TO JUMP IT Id used a 12 volt jump on the series 12 volt combination
NOTES
In series the voltage is additive (6+6=12) but the available current does not add i.e. if each battery can supply say 500 amps then two identical in series can still only supply 500 amps
When multiple batteries are used, its best if they are identical in size age type and capacity
A 6 volt battery consists of three 2.1 volt cells wired in series while a 12 volt battery has six 2.1 volt cells wired in series
Any more questions?? If I missed anything hopefully the other fine gents can add to this
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