Exfarmer
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The battery reading 8 volts is shot as 2 cells have gone. This has hopefuully just dragged the other down, but I rather suspect you will need to replace both
The battery reading 8 volts is shot as 2 cells have gone. This has hopefuully just dragged the other down, but I rather suspect you will need to replace both
Seems all NH combines are plagued with the battery drain "virus"......my old combine was a 12v start (2 x 12v in parallel). I used to either charge batteries together on the machine, or use the 12v jump starter.
The new one is a 24v start apparently, meaning neither of the above methods are possible. Do others just separate the batteries and charge individually?
I should really get round to fixing up a permanent trickle charger so it can be on charge whenever it's put to bed. I've never known any machine drain batteries quite so fast - I've left tractors in the barn for 6 months before with no charger on and they've started just fine.
Our old 880SL did this. Iirc the problem was a cable that ran from the two batteries as a single cable. I can’t remember much more than that but I know it never happened again once it had been replaced.
We have a 19 plate cr 9.80 running down batteries, we've just replaced one in the winter but was dead again the other day, the mechanic has now replaced the isolator switch as these give trouble so time will tell. Bloody annoying when you want to give it a run up and its got a flat battery. Our old cr was the same if left for a couple of monthsIts strange, both the John Tractors, I ran both were twin batteries and one would always be down.
they were twin 12 volts, for the European markets , the American versions were 24 volt. A lot of the issues on those tractors were related to the wiring being insufficient to carry 12 volt loads as opposed to 24 which uses half the amperage.
We have a 19 plate cr 9.80 running down batteries, we've just replaced one in the winter but was dead again the other day, the mechanic has now replaced the isolator switch as these give trouble so time will tell. Bloody annoying when you want to give it a run up and its got a flat battery. Our old cr was the same if left for a couple of months
Dealer is right, they must have a permanent live so they do not lose memory. They will have a small rechargeable internal battery As well but that has quite a short lifeDealer told me that the computers are always connected and thus drain a trickle of power but personally I think they are wrong in that.
2003 CX here and it was always draining battery s.
Changed to a new isolate switch and still the same.
If one battery is knackered you really need to replace both.
I disconnect batteries now when not in use.
Any Controllers on combine has battery feed even with no ignition. I should not drain battery but if there is some corrosion or damage to controllers then they may take more then should. More possible when get older.
Plus one fact - any acid battery loose charge even not use. It couse by internal resistance and is dependent of temperature.
Also batteries loose capacity with lower temperature.
So if you not keep changing from time to time don't be surprised if combine has problem to start.
Corrosion is on top of this.
A big battery will take several days to get back to full charge on a normal charger. even a heavy duty charger chucking out 20 amps can take a couple for a combine battery. As the battery level increases charge rate will drop.If a battery is left discharged for any length of time it is hard to get it back to full capacity
just jump starting a flat battery and leaving the machine to run for a while does not do the battery any favours
the best hope for a discharged battery is to put it on a mains charger and fully charge it leaving it a day or so on charge ones it is gassing this can reduce the damage a full discharge does
the battery on a car that is started every day and used every day lasts longer than one started less regularly