Resting Voltage??????

[Imtjnotu 5,000+ posts]

what batt is it?

 

[disturbed471985 5,000+ posts]

Sprinter 370's

 

[Imtjnotu 5,000+ posts]

solid batts....idk how could it drop that far in such a few hours....hmm this makes me wonder

 

---------- Post added at 03:32 AM ---------- Previous post was at 03:31 AM ----------

 

has to be a bad cell.......same thing would happen to my Deka 8a31

 

[TaylorFade 10+ year member]

please only knowledgable people chime in because this was my old batt i sold to him and i know 100% it was good it just wasnt charged for a while. If anyone knows about deep cycle batteries then they know that they can be depleted all the way down to almost 4 volts on some batteries and be "deep cycled" back up by putting them on a trickle charge of 2-5 amps for 1-2 days.
i dont want some retard saying "oh its bad cuz it rest low" if they have no idea about deep cycling. no need to scare him hes already weary of me now probly lol

That Sprinter is not a "deep cycle" batt, Bro. It's a UPS batt. Big difference. Deep cycle batts are designed to be discharged all the way down and back up. They even list the deep cycling capabilty in the specs. i.e.- 400 cycles. UPS' not so much. At my work, if we have to go on UPS power supply, all of those batts are discarded after we are back up and running.

 

[audiolife 5,000+ posts]

So what is your honest opinion about the battery then? Is it worth using or is it garbage?

If you can load test it. Hit it with a 40 to 100 amp load (depending on the size of battery) then recharge with a Ctek MUS7002 or a pulsetech extreme charger.(see if it has some gumption left in it) If you mess around and have old batteries, buy used or just have a lot of batteries, having your own chargers and load tester is not a bad investment. If you want longer life span and longer more consistant performance its the best way to go. In all honesty its hard to tell if its salvagable or not because if the charger being used can not "read" the battery it can very well over charge it and not have anyother modes to break up crystalization. Think of the crystalization as a coating surrounding the plates of the battery and its blocking electricity to allow the chemical reactions to take place inside the battery to recharge. I have brought back batteries that I never get a straight answer on HOW it got down to 3 or 4 volts. Sometimes they come back sometimes they dont. Even had some batteries rest at 12.1 volts not come back. Key point to always remember is an alternator IS NOT a battery charger. Just because a battery starts your vehicle doesn't mean its in good shape and to check where the battery is as far as state of charge it must no be recieving a charge for 3+ hours. You CAN NOT measure with the car on or right after it is turned of or just taken off a charger. There would be a surface charge on the battery that would make it read higher than it really is and if you load test it right after you take it off a charge you would be padding its results in a load test.

 

[audiolife 5,000+ posts]

That Sprinter is not a "deep cycle" batt, Bro. It's a UPS batt. Big difference. Deep cycle batts are designed to be discharged all the way down and back up. They even list the deep cycling capabilty in the specs. i.e.- 400 cycles. UPS' not so much. At my work, if we have to go on UPS power supply, all of those batts are discarded after we are back up and running.

I do not know of a lead acid battery designed to be discharged down to 0. All the way discharged on a 12 volt lead acid is 10.5 volts and many none deep cycle batteries get trashed going under 11 volts.

 

[TaylorFade 10+ year member]

I do not know of a lead acid battery designed to be discharged down to 0. All the way discharged on a 12 volt lead acid is 10.5 volts and many none deep cycle batteries get trashed going under 11 volts.

I didn't mean to zero. Lol. I just meant that deep cycle CAN go to 10.5 and back and be ok. UPS' don't like that kind of cycling. Of course, you know this already. This is also why I don't run my NSB's daily.

 

[audiolife 5,000+ posts]

I gotcha.

Just so some people understand a bit better, a battery is what it is when it is made they do not charge it. When it discharges ANY it is sulfating. When you recharge it you are trying to convert the sulfated portion fully back to a charged battery. Charge them up too fast with a crystalized battery you can actually make the battery worse and cause the crystals to grow more. I am not saying that 1 or 2 amps is better but in many cases a 35 amp charge isn't a good thing either. I would rather have a 5 to 12 amp charge that is more thurough and that doesnt cause my battery to get hot.

 

[disturbed471985 5,000+ posts]

Pcs of resting voltage -

I am charging at 6amps..

 

[audiolife 5,000+ posts]

What charger?

 

[disturbed471985 5,000+ posts]

schumacher xc10

 

[TaylorFade 10+ year member]

Might help your cause to get the time stamp to the correct year. Lmao

 

[disturbed471985 5,000+ posts]

not my cam had to borrow my mother in laws so I did not mess with it. My name is in pics and u can search my history I bought these last thursday from bass he knows this and I got it yesterday will provide tracking number if anyone thnks I am BSing.

 

[audiolife 5,000+ posts]

Thats an ok charger (like ctek better) might want to discharge it some then charge it back with 2 amps. Will it light up a light?

 

[disturbed471985 5,000+ posts]

I got it on 2amps now charging at 13.4 or so. I have not tried a light but it would not crank a car yesterday. Im poor could not afford a ctek lol