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Anyone know if this is compatible with AGM batteries? The reason I ask is that on the front of it, it states "lead-acid". My concern is this: Will this maintainer properly cycle with the AGM? It seems to go into float mode and the voltage on my bike doesn't show any overcharging voltage, but, it seems to let the battery get a little lower voltage wise than I think it should.

Any comments or suggestions?

Oops, got to go to work.

TTFN,

hobie
 

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Schumacher don't make a charger for gel bateries. Is your AGM type battery a AGM sealed battery or an AGM Gel sealed battery? The first one is just a lead acid maintenance free battery and the Schumacher Companion 1.5 and will do fine. If your AGM is a gel sealed than the Schumacher (and Optimate, BatteryTender and others) will tend to undercharge itby a small amount. You shouldn't worry about this really, it's always better when leaving atrickle charger permanently connected (when theWing is not being used) to have it keeping the battery slightly under peak (13.8) voltage. The battery will last for years like this and will easily top up to 13.8 when you start the engine.
 

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I've got an AGM Westco battery. Itis sealed.Thanks for your input.:waving:

Hobie
 

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Hobie1 wrote:
I've got an AGM Westco battery. Itis sealed.Thanks for your input.:waving:
Hobie, AGM batteries are very susceptible to incorrect trickle charging. They are easily over charged if the wrong unit is used. The only way you would know for sure is to call or write the Schumacher Battery Companion company.

The good news is: most AGM batteries can go all winter without loosing any (or very little)charge (one of their strong points).. I use AGM batteries in all my equipment & motorcycles& never charge them during storage. Most will come out of a 3-4 month storage at 12.6+ volts if disconnected for the storage period.

Twisty
 

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Idiscontinued using it as soon as I saw the "lead-acid" part on the label. As you stated, Twisty, I haven't seen any voltage drop to speak of even after leaving it off for a week.

I will contact Schumacher and report back here with what I find out. I will also contact Westco and get their input.

Hobie
 

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GWEddie was right. I always thought the AGM batteries were all gels, never thought some were lead acid. I checked it out after reading the posts. So it looks like a glass mat battery is only really worth considering if its a gel type and not lead acid.
 

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FitzAl wrote:
I checked it out after reading the posts. So it looks like a glass mat battery is only really worth considering if its a gel type and not lead acid.
FitzAl, why do you say that? I'm interested in why you would personally choose a gel over an AGM?

Gel's have certain advantages & AGM's have other advantages. Both types have acid in them. The gel's can be mounted upside down if needed so they have the advantage there. The AGM's are a little more vibration resistant so they have the advantage there. One big advantage to the AGM (at least in my book) is their voltage retention during prolonged storage, hands down they loose less charge than a gel in extended storage.

Twisty
 
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