Is this Kinetik battery done?

[FML 10+ year member]

So, I bought a used Kinetik 3800 last night off a local forum. I specifically offered and was able to purchase for less just because of what my current dilemma is.

 

Resting voltage on dudes garage floor was 12.4 volts (unsure if he had it on a charger prior to my arrival or not)

 

I got home, threw it in the truck. Was gonna run it main battery, but its massive and wouldn't fit anywhere in the engine bay. So i decided to run dual and put it in the back.

 

Noticed there was 0 improvement in voltage drop or sound quality.

 

Took it inside, hooked it up to a charger. It said it was at 40%.

 

Let it charge for a few hours, said it was at 14.4 volts, 100% charge , unplugged it.

 

Went out to it this morning in the garage (out of vehicle) and its sitting around 11.5 volts.

 

Reconnected it to the charger, it says its at 20% charge now.

 

 

Is this thing done? ?

Click to read more...

 

[NASTY08IMPALA 5,000+ posts]

Yea its toast

 

[FML 10+ year member]

Figured id also add, i have a charger that charges at 12v at either 10, 20, or 30 amps?

Which one do I use?

Also, I can hear things inside it, like... the gel moving around, almost bubbling but not. I don't know

 

[NASTY08IMPALA 5,000+ posts]

Figured id also add, i have a charger that charges at 12v at either 10, 20, or 30 amps?
Which one do I use?

Also, I can hear things inside it, like... the gel moving around, almost bubbling but not. I don't know

U dont wana charge a agm with anything that high i use 2amp ..and make sure the charger has a agm mode ..take it to auto zone or parts store and get it load tested its free..id be willing to bet its fried

 

[Cloud77]

That *****. This is why I won't buy used batteries regardless of their age

 

[NASTY08IMPALA 5,000+ posts]

That *****. This is why I won't buy used batteries regardless of their age

Its like buying used underwear .u dont know what kind of **** they been thru

 

[Cloud77]

XS power recommends 15A charging. I would give it 20A

 

[whitedragon551 5,000+ posts]

A battery sitting on a cement garage floor is your first sign you shouldnt have bought it. That is not proper care for a battery.

 

[undone1 10+ year member]

A battery sitting on a cement garage floor is your first sign you shouldnt have bought it. That is not proper care for a battery.

use to be this way back in the day..not with today's casings..

 

[whitedragon551 5,000+ posts]

use to be this way back in the day..not with today's casings..

Tell that to the OP.

 

[undone1 10+ year member]

sitting on the floor did not contribute to the battery going bad...age,lack of charging,overcharging (esp. agm),etc. are the norm.

 

[undone1 10+ year member]

and battery sitting at 12.4..usually indicates a poor or bad battery..

 

[FML 10+ year member]

K guys, read thru the replies.

The battery was in the garage on the floor upon my arrival, no clue of where and how it was stored previously.

Just hoping its not bunk, nobody likes wasting money.

So, after charging fully, what should resting voltage be, and how long should it hold the given voltage, prior to install in a vehicle?

 

[joom 10+ year member]

I'd get the battery completely charged. Remove battery from charger and let it sit over night. Most agm battery's I have seen will rest at 12.6 - 13.0 volts. Someone recommended charging at 2 amps. I have found that to be effective for me.

 

[danyopjr 10+ year member]

If it cant stay charged above 12v in that time of period, its no good. If u can test cranking amps that will tell u the truth