Posted by Oregon Tractor Jack on March 14, 2019 at 18:26:38 from (71.63.212.156):
In Reply to: agm battery charging posted by Mike M on March 14, 2019 at 10:39:10:
From what I understand you can charge an AGM with just about any automatic battery charger as long as the battery is just low and not flat dead. If it is dead like you left the ignition on for a couple of days then you will need to try charging it with a manual charger. Use a manual with a 2amp setting and leave it on for several hours till the AGM has partially recovered then put the automatic charger on. I have done that several times with pretty good success. There is something about the AGM's taking a surface charge and will fool the auto-sensing voltage limiter in battery maintainers. The other thing about AGM's is they will take all the charge you can feed into them. If you have an AGM in your car or truck and you run the battery flat dead you should charge it with a low amp 2 to 10amp charger and not just jump start the car/truck. The AGM will take the full charge from the alternator and can burn out your alternator. You basically can take an alternator and run it way past its duty cycle. Lead acid batteries don't do this.
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