a quick question on a dead ( not discharged ) battery

[Cipher]

Hello heres the situation.
Charged battery and it showed surface charge of a high 13 volts.

Install. Barely lights gauges. no crank why even try.

Attach the bike to lawnmower batter via cables and easy starting.
Ran for a minute or so and remove cable lead whilst running bike stops dead.

Battery has internal short? To much resistance internally? I did notice that there were no bubbles coming pout of the electrolyte in two cells when i tipped the battery to check the level. Level was fine just hard to see.

Oh well it had a hard life.

 

[fastbysuzuki]

Nothing to say other than Two cells dead or dying fast

 

[Killer2600]

Surface charge is meaningless - it bleeds off/vanishes after some time. More important is the battery voltage when you install it in the bike and start powering things up. Assuming you charged this battery till it was full, you have a bad battery - it no longer holds a charge, replace it.

 

[Cipher]

yes yes oddly a Yuasa only costs 76 bucks new from fortnine. free delivery and no sweaty parts guy acting like a C___

 

[bobgroger]

I have never had a bike battery last over 2 years no matter how carefully it is tended. Even a LiFe04 battery. 2 years, the third spring it is dead.

 

[Rob S.]

I have never had a bike battery last over 2 years no matter how carefully it is tended. Even a LiFe04 battery. 2 years, the third spring it is dead.

Bad luck!

My first Yuasa (came with used bike) lasted the entire 4 yours I rode the bike. My second lasted the entire 10 years I rode the bike.

My third bike (and battery "Everlast") came shot. I rode it for a few years, but a few of the cells would never maintain more than half the full electrolyte level. I'm replacing it with a Yuasa sealed.

Again, do "sealed," "maintenance-free" and "AGM" all mean the same thing? (I know that AGM stands for absorbed glass mat.)

 

[Grimly]

Again, do "sealed," "maintenance-free" and "AGM" all mean the same thing? (I know that AGM stands for absorbed glass mat.)

These days, they tend to mean the same thing, but there are still wet batteries out there being sold with the marketing tag of 'maintenance free' and 'sealed'.
For AGMs yes, it is true.

 

[Guest]

my last agm lasted 7 years, replaced as a preventative measure, not due to failure. Survived MI winters in the garage with no recharging till spring.