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| Author |
Message |
    
riyaz
Visitor
| | Posted on Thursday, November 16, 2006 - 09:26 am: | 
|
why is the charging rate of one battery in a 24volt engine different? one battery shows 12 volts while the other shows 15volts. what could be the problem? |
wasco
Visitor
| | Posted on Thursday, November 16, 2006 - 09:48 am: |
|
Time to do a specific gravity and load test on the batterys. |
riyaz
Visitor
| | Posted on Thursday, November 16, 2006 - 09:56 am: |
|
did a load test and found out the battery was faulty .so have changed both batteries and i still have the same problem |
Dwight Brooker
Member
Username: sailmaster
Post Number: 27
Registered: 05-2006
| | Posted on Thursday, November 16, 2006 - 01:06 pm: |
|
Disconnect the batteries from the system and test again. |
Wasco
Visitor
| | Posted on Friday, November 17, 2006 - 10:44 am: |
|
Might help if you describe your system. Charging system etc. You say 24 volt system but are you refering to 2 - 12 volt batteries being charged in parallel or 2 - 12 volt batteries in series .
It would seem if one of your batteries is at 15 volts. This would repersent a battery being charged at full rate by a 12 v. alternator, while the 12 v. battery as one that is not receving any charge at all.
If in fact you do have a 24 v. system with engine running , charging rate should be in the 30 v. range. Another thought. where in system are you taking your measurments ? Poor connections in paticular grounds can lead to much confussion.
Another thing to keep in mind is that to get a accurate battery test , the batterys must be isolated - slowly charged - let sit for 24 hrs. than tested. A good batttery should have a fully charged voltage of 12.6 volts.
Best luck |
riyaz
Visitor
| | Posted on Sunday, November 19, 2006 - 03:50 am: |
|
thank you wasco.the charging system is 2 -12 volt batteries connected in series. and being charged by an alternator of 24 volts 25 amps. with an rpm of 1500 the batteries show a total voltage of 27 volts but when checked seperately on shows 12 and the other shows 15 volts. its a yanmar marine engine of model 6ha series. |
Ronald E Cairns
Member
Username: ron_cairns
Post Number: 25
Registered: 12-2005
| | Posted on Wednesday, January 03, 2007 - 09:41 am: |
|
It sounds as if you may have a battery switch in place and you are testing with engine runnung? |
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