Battery

captain jack said:

A couple of yr's ago a bought a motobatt battery, it was faulty & a refund given. I have now tried one again & it arrived today, (it's not yellow this time,it's black) not fitted yet but is on charge, so far it has taken some charge but has held at 13.9V at .23A, is this ok? My experience so far is that my Yuasa dropped to 000A when fully charged & I am now concerned about this new battery which is Absorbant Glass Mat (AGM). Any ideas folks I'm out of my depth.

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1olbull said:

I bought one of those yellow POS!
Lasted one month!
NEVER again Motobatt!

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Bedifferent said:

You didn't mention if your battery came dry and you had to add the acid to it after it arrived. The reason I ask is....you mentioned it arrived in a discharged state. To me, that implies it already had the acid added to it. I bought the biggest and highest CCA Yuasa AGM Battery I could get my hands. It came dry with the acid packs and so far it has served me well. I would never put a lot of confidence in a battery that arrived wet and discharged (if they can even ship a AGM battery that way). You never know how long it has be sitting on the shelf before it made it to you.

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barbagris said:

And yet I have 2 running fine.
Anything purchased sight unseen is a risk.
And shippers are NOT careful with merchandise.

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barbagris said:

Motobatt's come filled, charged and sealed. Pretty much the defining point of distribution for ALL Europe is Holland.
Special shippers generally. Many shippers WILL NOT SHIP LOOSE ACID HERE EITHER.

A duff one is just bad luck. I always check too - but both my bikes now have motobatts and they were smack on voltage wise.
The R3 has the black one in.

Jack - the problem MAY NOT BE what you think. Static Voltage is NOT important - what matters is the voltage when you thump the button.
Lead Acid batteries WILL (often rapidly) decrease voltage to feed amps. If the REAL voltage drops too far - then the ECU will not respond.
Motobatt did publish this on their web - have a look.

Just keep it on a battery tender when stood up for a while. Though my Motobatt held up fine for over a week in the UK in April.
Here I always have a tender on at home.

Or get a small LiFePO4 battery and mount in parallel - The way this LiFePO4 will then work is like a trickle charger. They hold a marginally higher voltage.
It's a tip I learned from some guys in the Paramedic industry. They do this on seldom used vehicles they cannot leave plugged in.
LiFePO4 tend to try and keep voltage up rather than deliver amps.
On a Motobatt this add-in is a cinch as you have the dual power posts.

Do you have ANYTHING fitted that draws ANY power when switched off?
Don't guess. Fit an ammeter and measure.

Also Check/Clean/Protect ALL connectors/fuses Poor connections consume energy.

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barbagris said:

And yet I have 2 running fine.
Anything purchased sight unseen is a risk.
And shippers are NOT careful with merchandise.

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