Kubota MX5400 Battery - AGM or Flooded?

   / Kubota MX5400 Battery - AGM or Flooded? #1  

N750A

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Aug 27, 2021
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18
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East Tennessee
Tractor
Kubota MX5400
Is the Kubota MX5400 battery an AGM or flooded/wet-cell battery? There is nothing identifying which it is on the label or in the manual. A parts look-up doesn't mention which it is.
 
   / Kubota MX5400 Battery - AGM or Flooded? #2  
I would expect it to be a flooded acid battery.
Really.
Good Luck!
 
   / Kubota MX5400 Battery - AGM or Flooded? #3  
Regardless of what kind it was originally, my own prefernce is to upgrade to an AGM. The only downside is a slightly higher initial price for AGM.
rScotty
 
   / Kubota MX5400 Battery - AGM or Flooded?
  • Thread Starter
#4  
The reason I ask is that my charger has an AGM setting and a Flooded setting - didn't know which to use!
 
   / Kubota MX5400 Battery - AGM or Flooded? #6  
The reason I ask is that my charger has an AGM setting and a Flooded setting - didn't know which to use!

Oh.... OK, we can still help with that. It's probably a flooded cell type. Most manufacturers put a flooded cell type as original equipment. I've never seen a Kubota with anything else. I'll tell you exactly how to charge any battery if you are curious....

First off, Hooking up the charger usually makes the top of the battery visible.
So when you hook up the charger take a look to see if there are caps or knobs on top that unscrew or pop off on the top surface of the battery. Of so, those caps serve two purposes: they enable fast venting during charging, and also allow you to look at & adjust the acid level. And they are the absolute signature of it being a flooded cell type battery.

The top of an AGM battery is generally smooth. There never are removeable pieces up there. It is sealed, & rarely vents and never needs additional acid. Having a smooth top diagnostic. It is sort of advertising it as being an AGM.

Both types use the same chemistry and can be charged with the same charger. Also the resting voltage an hour after charge is the same for either one: it should be in the region of 12.6 or 12.7 volts for a 100% charged battery.

A flooded cell type can be charged at a slightly voltage & rate because it has a lot of venting and is able to releases gases to the atmosphere.
An AGM is charged at a slightly lower voltage which slows the charging rate so it has time to reabsorb the gases internally.

What really controls battery charging is battery heat. Some chargers monitor that, but most do not.
If you are still unsure about which battery you have, use the AGM setting and set the amps to under six amps.
If yours is a have a flooded type battery - and it probably is - then set the charging for as low a number as you can.
Charging at low amps takes longer, but there is no other downside. That's part of why perpetual trickle chargers (very low amps) make batteries last so long.
Good luck,
rScotty
 

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