batteries not detected by charger

[trout-dink]

I do not have power to 2009 skeeter sl 190. I believe the power on the batteries was completely drained. i plugged in Dual Pro charger and received Two red lights and third bank blinking red light. Manual suggests bad connection.

thanks

 

[metriccrescentwrench]

Re: batteries not detected by charger

I'd disconnect the batteries and (after checking for proper electrolyte level) see if I could get them to take a charge with a plain vanilla charger. Also, it would be worthwhile to take note of each battery's voltage before and after to see what's going on. There's always a chance, after being totally drained, that they're toast. If they will hold a charge after being on the manual charger for a while then see if your smart charger works with them.

 

[trout-dink]

Re: batteries not detected by charger

Thanks

I think the batteries are good (4 months old) i'm switching one out now, The starter battery. The two batteries in a series were shown as fully charged (green light). I left the power on in the boat, used it last week, key on and i think the bilge. I checked the fuses and I am not sure where to go from hear. Is there a type of circuit breaker I need to flip?

Thanks

 

[trout-dink]

Re: batteries not detected by charger

Ok
Apparently my cranking battery is toast. Lesson learned take keys out of boat.

 

[NHGuy]

Re: batteries not detected by charger

Start out by turning everything off. Then disconnect each battery's negative post. Then try to charge them separately using a manual charge, if your charger will do that. If it won't you can get a little plain charger for cheap money at walmart or the chain auto parts store. The little chargers are a lot cheaper than a battery! Do it soon, the longer you leave the batteries discharged the less likely it is you will be able to recover them.

 

[H20Rat]

Re: batteries not detected by charger

here is a trick that sometimes work to bring back a dead battery... get another battery that is fully charged. get some jumpers, and then connect the two batteries together for a couple minutes.

disconnect them, and try charging again. it usually will work the second time, but keep in mind that anytime you flatten a battery, you DRASTICALLY shorten its life.

 

[dannyual767]

Re: batteries not detected by charger

here is a trick that sometimes work to bring back a dead battery... get another battery that is fully charged. get some jumpers, and then connect the two batteries together for a couple minutes.

disconnect them, and try charging again. it usually will work the second time, but keep in mind that anytime you flatten a battery, you DRASTICALLY shorten its life.

To add to smokingcrater's advice, you can just leave the two batteries connected in parallel (+ to + and - to -) and then hook that battery charger up. This will allow your charger to "see" the dead battery. It will then start to charge both batteries. This method is what is required to bring back dead AGM (Optima and Odyssey) batteries.

I found this method in a recent issue of Hot Rod magazine. I used it to revive a long dead Odyssey AGM jetski battery !

 

[H20Rat]

Re: batteries not detected by charger

To add to smokingcrater's advice, you can just leave the two batteries connected in parallel (+ to + and - to -) and then hook that battery charger up. This will allow your charger to "see" the dead battery. It will then start to charge both batteries. This method is what is required to bring back dead AGM (Optima and Odyssey) batteries.

I found this method in a recent issue of Hot Rod magazine. I used it to revive a long dead Odyssey AGM jetski battery !

I was going to add that, but there is a possibility to cook the good battery if you leave it on the charger. If you DO add a charger to the mix, make sure its a small amperage charger and you don't leave it run too long.

 

[dannyual767]

Re: batteries not detected by charger

Yeah, I removed the wires to the "good" battery after about an hour. At that point, the bad battery had enough of a charge for the charger to continue to "see" it and keep sending current to it.

 

[LAC_STS]

Re: batteries not detected by charger

To add to smokingcrater's advice, you can just leave the two batteries connected in parallel (+ to + and - to -) and then hook that battery charger up. This will allow your charger to "see" the dead battery. It will then start to charge both batteries. This method is what is required to bring back dead AGM (Optima and Odyssey) batteries.

I found this method in a recent issue of Hot Rod magazine. I used it to revive a long dead Odyssey AGM jetski battery !

+1

I got this same info off of optimas site. I couldn't get two yellow tops to charge for nothing.

I hooked them up + to + and - to - and put the charger on there and then after a hour or so I could disconnect them and it would charge.

Optimas site says that most battery chargers will not charge a battery that is under 10.5V. I even tried a pretty old not smart charger and it would say fault.

Hook em up and charge em till it gets your dead batt over 10.5Vand then you can charge it by itself.

 

[Hoggar]

Re: batteries not detected by charger

Instructions from Optma for recovering a deeply discharged battery

If a battery is deeply discharged (below 10.5 volts) most basic chargers will not supply a charge. To charge a battery, you can wire a second fully charged automotive battery (12+V) to the discharged battery in parallel (+ to + and ? to ?). Then hook up the charger to either battery, setting the charger at 10 amps. Leave for two hours, monitoring frequently. During this process if the discharged battery gets very hot or if it is venting (hissing sound from vents) then stop this process immediately. When the discharged battery reaches 10.5 volts or more, remove the second battery and continue charging until fully charged.

For normal charging a relatively low current, such as one or two amps can work well, but when the battery has been deeply discharged, some sulfation of the battery plates may have occurred. If you charge at 10 amps, the higher current will help to break up this sulfation.

If you have an automatic charger, let it run until the charger indicates charging is complete. If you have a manual charger, you can get a rough estimate of the charging time in hours of a completely discharged battery (11.2V) by multiplying the capacity (amp hours or Ah) of the battery by 1.2. If your battery is not completely discharged the time would be less.

In most cases these steps will recover a battery. It?s okay for the battery battery to get slightly warm during the charging process. If it?s hot to the touch it means there?s a short and the process should be discontinued.