I have a red top from Dec 05, my regular charger will only charge it to 80%. Will this charger be able to charge it to 100% or is this batt dead?
1730398
I myself haven't tried it on a dead optima yet, but I have had great success recovering traditional lead acid batteries around my shop. The oldest one was about seven years old. I (just my opinion) think it would.
1730399
battery don't last 10yrs.... But if the battery was 5yrs and newer and if you discharged the battery completely to 0 volts, yes it will bring the battery back to life 100%
1730400
It works like they say.ihave 2 blue tops in my boat that a reg. batt. Charger would not charge this one got both back up at 100%. These batt. We're flat dead.mine were bought in 2011 yours might be to old.
1730401
Yep it will charge it to 100% then will go into maintenance mode when fully charged.
1730402
My own Red Top was purchased recently, but I understand the vintage Red Tops are like that old VW in the Woody Allen movie Sleepers, worth keeping long after other batteries have cranked their last solenoid. And an absolute stranger told me this Thanksgiving that using a regular charger on any Optima battery is tinkling into the wind. I'll bet the Optima battery charger would revive it for many more miles; mine even resurrected the supposedly dead Interstate battery it replaced. For the record, I've heard the old Red Tops were even better than today. But I like mine just fine, and wish you good luck with yours. My own Red Top was purchased recently, but I understand the vintage Red Tops are like that old VW in the Woody Allen movie Sleepers, worth keeping long after other batteries have cranked their last solenoid. And an absolute stranger told me this Thanksgiving that using a regular charger on any Optima battery is tinkling into the wind. I'll bet the Optima battery charger would revive it for many more miles; mine even resurrected the supposedly dead Interstate battery it replaced. For the record, I've heard the old Red Tops were even better than today. But I like mine just fine, and wish you... » Read More My own Red Top was purchased recently, but I understand the vintage Red Tops are like that old VW in the Woody Allen movie Sleepers, worth keeping long after other batteries have cranked their last solenoid. And an absolute stranger told me this Thanksgiving that using a regular charger on any Optima battery is tinkling into the wind. I'll bet the Optima battery charger would revive it for many more miles; mine even resurrected the supposedly dead Interstate battery it replaced. For the record, I've heard the old Red Tops were even better than today. But I like mine just fine, and wish you good luck with yours. « Show Less
1157689
Hi Gregory! I just asked the question of the best "proven" way to charge these batts and I'm convinced by the majority of answers is to use the USB end and keep the mAh's the same 1 thru 5, of course. It will take longer, but successful all around, as many have said and I tend to agree. Some have used, me included, a 3.7V wall charger, but I don't feel any longer. I hope that this helps and puts your mind at ease as it does mine!�
1294416
If I remember the end turns red. The battery will last one charge and then you need to charge it totally. ;-(
691449
I only use the 9.6V, but apparently the charger will handle the full range of batteries. The red light to start would be normal if it stays on solid; if it flashes, it still needs a little charge.
1527842
hello Mike S. Don't do what I did pay a lot of money for something that don't work, these are after market chargers the original battery has been discontinued by sears, as have the charger, so long story short don't waste your money on something that don't fill the bill. Be smart spend a little and get a knew drill the 19volt is great and powerful, and it's less than $100.00 these come with two batts and charger besides X-mas is coming so what are you waiting for???
1552926
Never had a problem w/the charger.just adjust the batteries.get a battery checker.best way to check any battery.also the batteries are old?best wishes.
1145975
I had the same problem. It would never fully charge my new motorcycle battery. It would say that it was charged but it would not even turn over. So the charger went in the trash. Sorry I couldn't help.
2259697
My Schumacher charger would let the battery drop to less than 50% without restarting. I believe there is a fault with the unit's processor. Schumacher support would not respond to my requests for a remedy. The remedy is to return it before the money back guarantee expires.
1443259
Red means it's still charging. Mine sometimes needs to be left charging overnight before it turns green. Not sure if that's the case with yours but it's worth a shot.
982985
i purchased it for my father but I would guess its a weak battery indicator and currently charging if it doesn't go green after a while the battery might not be chargeable anymore or a faulty charging unit , or drill . Most chargers have the same red light indicator meaning.
369681
No....turn the power off to charge. The red light will come on when you plug in the charger. When the red light disappears it is fully charged.
1495974
Mine works great. You may have a defective charger. I would exchange the item for another one
1885708
I received my battery last March (2012) and fully charged it up to use mainly for an emergency or when I travel. I had really forgotten about it until you asked this question. I just took it out of the drawer and found that it is still charged up to 99%. This surprised me as it has been just sitting there for 11 months now.
544126
Sorry, I can't shed any light on the subject, Brian. After ordering the charger I discovered the problem was with my battery not the charger - I returned the charger I purchased through Amazon. My battery had run too low to be charged using any charger. I had to take it to a golf cart service store and they got it up and running for me. The charger I had was perfectly OK.
641666
If it's the same "included" charger that I received, then the answer is YES. Two red LEDs indicate that it's working and should go out when charging is complete.
399534
Most likely it is the battery. Generally the charger either works or doesn't. If its the original battery I can almost guarantee the battery is shot.
1225742
If u look up ah on the internet it tells u that the higher the number the longer the battery runs. If u r replacing the old batteries and still use the same case the charger is the same unless the original batteries are 12ah. Then check the charger to see if is meant to handle a larger capacity. I found mine worked great but the charger adapter is loose so the charge doesn't hold long. I need new charger available on Amazon.