![]() ![]() !! i choose an i'll buy into the system.battery was never right. believe me, i was soooo pissed i could've punched my mother.why don't they tell ya upfront.? an why not they sell/have there own brand of optima chargers.?.!! heck, i'd buy one. finally, talked to CARL, my go-to guy at ( rhymes with US MOAT ) he deciphered the criptic script an locked me on to the 3 stage charger. that norman einstein an oppenheimer couldn't decipher. a full US CONSTITUTION wording packed on a 5x5 card. my minni-max has led battery gauge lites. they charged it an checked the new one before let me out the door, an in no-time on the water the next day lost charge. It is what it is.Well, that's right, they don't let ya know about the special charger ,readily.all i had was an old style charger an it ruined it pronto. And there is something very FUNDAMENTAL about being able to use a hydrometer to see battery condition - I'm fundamental too I guess. One of the reasons I'm not a fan of AGM normally. We went through this "parallel" method once with a highly depleted AGM battery and a "new world" battery charger at the Farm. I can see that the "self-protecting" chargers now mostly available MIGHT have an issue at low voltages for the Optima. My old school Sears 6 amp battery charger (no AGM ability or protection to the battery OR charger beyond low ampacity) seems to not be disqualified by this descriptor. Typically, we only see issues with charging when it relates to stand-alone deep-cycling applications or severely discharged OPTIMA batteries. In these applications, most 12 volt chargers (old or new) or alternators will sufficiently recharge an OPTIMA battery with at least 10.5 volts. Under normal (engine-starting) conditions, an OPTIMA battery should never experience “at-rest” voltages below 10.5 volts. For float charging, we recommend 1 amp maximum, 13.2-13.8 volts. In those instances, it may be necessary to follow the parallel charging instructions described elsewhere in this FAQ.įor regular charging we recommend a maximum of 10-amps, 13.8-15.0 volts. ![]() However, even some AGM-compatible chargers will not recharge deeply-discharged (less than 10.5 volts) OPTIMA batteries. Do not use gel or gel/AGM settings, as they will not fully charge an OPTIMA battery and could damage it over time. Some have specific AGM settings which should be used to charge an OPTIMA battery. Most high-quality, modern battery chargers now have built-in features to charge AGM batteries like OPTIMA batteries. If your OPTIMA battery is discharged below that, the battery charger may not start up. Most basic battery chargers have a built-in function to prevent charging a battery with less than 10.5 volts. All of this can lead to confusion when it comes to recharging a deeply discharged OPTIMA. This benefit also allows an OPTIMA battery to run longer than its specified ratings and run to a lower voltage than typical flooded batteries. A handheld electronic battery tester will most likely provide inaccurate test results.Īn OPTIMA battery has the benefit of very low internal resistance, which allows high-amperage output as well as efficient charge acceptance. A deeply discharged OPTIMA battery (less than 10.5 volts) will not test or recharge properly if treated as a gel battery or regular flooded battery. However, since OPTIMA batteries are frequently used in high-performance applications or nonstandard vehicle starting applications, there are certain instances that must be given special considerations.Īn OPTIMA battery is an AGM battery, not a gel battery or regular flooded battery. However, under normal vehicle starting applications, most regular automatic lead-acid battery chargers will properly charge an OPTIMA battery. ![]() Do I need a special charger for my OPTIMA ® battery?īoth the OPTIMA® Chargers Digital 400 & Digital 1200 12V Performance Battery Charger and Maintainer enhance the performance of OPTIMA and other AGM batteries, recover deeply discharged batteries and extend battery life. ![]()
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