Our Coachman 460/2 year 2001 is nearly always connected up to mains hook up.The battery is just over a year old and is 110 amp.Just thought i would check every thing out before going on holiday next week. Found out the voltmeter was showing 14 amp charge and normaly this would be in middle position , switched off mains and found battery 12.0v. Normaly the voltmeter would be in trickle chare position.Started checking and found the 12 v socket on mains 13.3 volts and a auxillary socket which is not used showing 13.73 v.thinking somewhere there is a drop in that circuit.When i said the battery was at 12v this was because it had been switched off for few days ,but in my mind this would not have caused such a drop ,any ideas guys?.
Voltage drop
- Thread starter Robert_374242026
- Start date
Don't fully understand your question Robert.
Voltmeters do not directly measure current (amps).
If it is a voltmeter that you are reading, then 14 volts is good if the charger is on. (Probably 13.8 vdc in fact).
If you switch your charger off the voltage should fall to around 12.6 for a good condition, charged battery.
Clarify your problem please as you possibly do not have one.
Voltmeters do not directly measure current (amps).
If it is a voltmeter that you are reading, then 14 volts is good if the charger is on. (Probably 13.8 vdc in fact).
If you switch your charger off the voltage should fall to around 12.6 for a good condition, charged battery.
Clarify your problem please as you possibly do not have one.
Hi Rod, I should have said battery after leaving it without hook up read 12 volts not amps,and when on mains it went to 13v+,but could not understand why the loss from full charge down to 12 v in few days with nothing on,then when further checking with voltmeter i had one cicuit showing a differant reading to the other, would this be a voltage drop because there are more spurs off of it ?.
Hello Robert
To be certain about the volts drop issue it may need to be checked more thoroughly, but for guidance the following is true:
You will only get a voltage drop around a circuit if something is using some current, The current flow reacts with the small resistance in the wiring to create a voltage drop. however if everything is turned off or disconnected, then no current flows (and therefore no voltage drop is created) so you should read the same voltage at any point on the circuit.
If you do get a volts drop on different outputs from the distribution panel, then that might indicate there is a blocking diode, which might have been included in the circuit to prevent damage from connecting something with reverse polarity.
Your other concern relating to the battery voltage may be explained by your admission that for much of the time the battery has been kept on charge. This might have over charged and damaged the battery so it cannot maintain its terminal voltage or retain a full charge.
To be certain about the volts drop issue it may need to be checked more thoroughly, but for guidance the following is true:
You will only get a voltage drop around a circuit if something is using some current, The current flow reacts with the small resistance in the wiring to create a voltage drop. however if everything is turned off or disconnected, then no current flows (and therefore no voltage drop is created) so you should read the same voltage at any point on the circuit.
If you do get a volts drop on different outputs from the distribution panel, then that might indicate there is a blocking diode, which might have been included in the circuit to prevent damage from connecting something with reverse polarity.
Your other concern relating to the battery voltage may be explained by your admission that for much of the time the battery has been kept on charge. This might have over charged and damaged the battery so it cannot maintain its terminal voltage or retain a full charge.
Hi John L,thanks for info,I think you are right regarding diode,as for overcharging Coachman manuel said it cannot overcharge and that was the reason for having it on a lot.As i say thanks for reply.
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