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AGM battery with 4-stroke outboard

No problem with AGM, and note there are regular AGM's (Durcell, Everstart, interstate, bass pro, etc) and true AGM's (Odyssey, Trojan, Lifeline, etc)

The regular AGM's are better than lead acid and can be charged with a lead acid battery charger profile. True are even better than regular type AGM's and should be charged with AGM charger profile
 
AllDodge said:
No problem with AGM, and note there are regular AGM's (Durcell, Everstart, interstate, bass pro, etc) and true AGM's (Odyssey, Trojan, Lifeline, etc)

The regular AGM's are better than lead acid and can be charged with a lead acid battery charger profile. True are even better than regular type AGM's and should be charged with AGM charger profile
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I am curious to just what an "AGM Charger Profile" is... Is it a setting on the new battery chargers or something on the Yamaha F200XP outboard? Might you know what the charging system is on the Yamaha? Is it like an alternator on a car?
 
The bulk stage provides a high current to bring the battery to about 80% charge, with voltage rising to around 14.7V. The absorption stage completes the charge, with the voltage maintained between 14.4V and 14.7V as the current decreases. Finally, the float stage maintains the battery's charge at 13.6-13.8V to prevent overcharging

The charging I'm referring to is when a Bat is placed on a Bat charger. The alternators on all OB and I/O will keep the Bat charged without issues
 
Charging profiles mostly come into play only when using a supplemental battery charger.

Most alternators, and certainly the Yamaha F200XB alternator, not does have any specialized charging profile. It is a constant voltage output device. Regulator maintains voltage while the current output varies depending upon the battery state of charge and other variables.
 
What is the difference between a regular AGM lead acid battery and a True AGM lead acid battery? First I have heard of this.

Mercury Marine specifies AGM lead acid batteries for certain models but they don't specify which type.

In Yamaha's approval they make no mention of different types of AGM lead acid batteries.
 
Found it out my self when I bought new boat with verados

A smart charger was installed and I had 2 mercruiser AGM bats. Could not get charger to use AGM profiles, so did some reading. I now have 3 Odyssey bats and charger went straight to AGM charging
 
boscoe said:
Charging profiles mostly come into play only when using a supplemental battery charger.

Most alternators, and certainly the Yamaha F200XB alternator, not does have any specialized charging profile. It is a constant voltage output device. Regulator maintains voltage while the current output varies depending upon the battery state of charge and other variables.
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You can buy external regulators that will provide whatever charging profile you want....its usually not an economical path but it is doable in many cases...
 
I am familiar with electromagnet alternators that have external regulators. Both fixed voltage and variable voltage types. But with both of these types the voltage is fixed insofar as the battery is concerned. It does not vary if and when a battery gets to a certain degree of charge.

In the case of a Yamaha, which has a permanent magnet alternator, I have never come across a regulator that has charging profile such that a supplemental battery charger might have.
 
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