D3100... 11.3volts...

[RickyFriery97]

I've had one of my D3400s drop to 11.5 in my burb. No tellin how long it sat that low. Coulda been as long as two-three weeks

Threw it on the charger and then it held 12.9

That batt is now the starting battery in my Tahoe and I've had it over 2 years

Charge it up and It should be fine and last a while

[AmmoJammo]

i still don´t get it, maybe the battery had a long time on the storage and it was discharging every month a little bit, my kinetik hc2400 came around 11.9v , i just charged it and installed it, been abusing from it for almost 2 years without a single problem, i don´t see why you think it´s gonna fail in about 6 months, besides that, you really think that even discharging completly an xs power battery one time, it´s gonna blown or something? i don´t get it...

Because of what Nathan has said....

Any time you store a sealed AGM battery below 12.6V you can cause damage to the battery. When the battery is stored below 12.6V you can get sulfation that builds up on the led plates in the battery, which in turn takes surface area away from the battery's ability to produce power. This sulfation can also cause the battery to short out internally.

If it had been flattened to this point once, while playing a stereo, no worries! it wouldn't be left sitting flat.

But this battery has been getting flatter and flatter for how long? a year? two? how long since it dropped below 12.6volts?

The wet battery thats currently in my car was discharged to 11.7volts, and left sitting. Now its stuffed. I know its not an XS battery.

I just don't want to have spent $380 on a battery, only to have it fail in 6 months time because of the state it was in when I first received it, as no fault of my own.

I've got an Exide Orbital, D34 battery, thats about 6 years old, been used off and on in various installs, in about 6 different cars, and I'd say is in as good condition as the day I bought it.

[AmmoJammo]

I've had one of my D3400s drop to 11.5 in my burb. No tellin how long it sat that low. Coulda been as long as two-three weeks

Threw it on the charger and then it held 12.9

That batt is now the starting battery in my Tahoe and I've had it over 2 years

Charge it up and It should be fine and last a while

but 11.5volts isn't the same as 11.3... and 2-3 weeks is a whole lot less than the 6+months this would have been sitting.

I'll charge it, see what happens... is 6 amps an ok charge rate for a completely flat battery?

[RickyFriery97]

I've had one of my D3400s drop to 11.5 in my burb. No tellin how long it sat that low. Coulda been as long as two-three weeks

Threw it on the charger and then it held 12.9

That batt is now the starting battery in my Tahoe and I've had it over 2 years

Charge it up and It should be fine and last a while

but 11.5volts isn't the same as 11.3... and 2-3 weeks is a whole lot less than the 6+months this would have been sitting.

I'll charge it, see what happens... is 6 amps an ok charge rate for a completely flat battery?

Do you know for a fact it sat for 6+months

And that battery isint completely flat. 6 amps will charge it, my charger has a 10 amp charger that I use.

If its not a float charger then make sure to monitor the voltage when charging it and don't let it go over 14.9

[AmmoJammo]

I've had one of my D3400s drop to 11.5 in my burb. No tellin how long it sat that low. Coulda been as long as two-three weeks

Threw it on the charger and then it held 12.9

That batt is now the starting battery in my Tahoe and I've had it over 2 years

Charge it up and It should be fine and last a while

but 11.5volts isn't the same as 11.3... and 2-3 weeks is a whole lot less than the 6+months this would have been sitting.

I'll charge it, see what happens... is 6 amps an ok charge rate for a completely flat battery?

Do you know for a fact it sat for 6+months

And that battery isint completely flat. 6 amps will charge it, my charger has a 10 amp charger that I use.

If its not a float charger then make sure to monitor the voltage when charging it and don't let it go over 14.9

seller just told me the batteries had been sitting in their warehouse for a few years, so its been below 12.6volts for at least 6months I'd say.

its not supposed to go over 14.4.

The charger I have is a smart charger, 6 or 12 amp selectable, charges to 14.4volts, then switches to 13.8volt trickle charge.

However, I'll start it off on a B6 charger set at 1amp...

[AmmoJammo]

when/if it gets to ~12.5volts, I'll put it on the higher current charger.

Next question is, once its fully charged to ~14.4volts, if I leave it to rest for about 24 hours, what voltage should it still be floating at?

[fecupe2001]

From 12.7v and up sounds about right on that brand new battery

Edited February 8, 2012 by fecupe2001

[95legwagon]

i would say the high 12's like 12.5-12.9 i would guess...... its what normal batteries rest at and this shouldnt be any different..... anywhere in the 12's i wouldnt worry about....only if it drops to 11 v over night or 24hours or w/e. how about trying to load test it after you charge it? thats what id do..... maybe make a video of all the steps *just* in case it is ruined so you can show xs power what you did and how u received it.

documentation is always your friend when its on your side.

but im not an expert so........

hope this helps

-jarrid

[AmmoJammo]

a video I just watched suggested I should be charging the battery at a higher rate, as it can help break up the sulfation...

and another website says I should charge it at 1% of the batteries amp hour rating for 48 - 120 hours... :/

Edited February 8, 2012 by AmmoJammo

[AmmoJammo]

Charged the battery.

I'll see what voltage its at tomorrow morning, but I imagine it'll still be 12.5+volts.. even if it is stuffed.