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When the battery ammeter shows "+24" the battery..
  • A
    is being discharged with 24 A.
  • B
    has a remaining capacity of 24 AH (Ampere hours).
  • C
    is fully charged to 24 V.
  • D
    is being charged with 24 A.
An ammeter is connected in series within a circuit and measures the current flow of the circuit. Ammeters have a pretty low electrical resistance so that it doesn’t disturb the measured current. Therefore, if you place an ammeter in series with the battery, you will see its charging current. +24 will simply indicate that the battery is being charged with 24A.
 

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