The seemingly dead, deeply discharged AGM battery.A good battery, preferably above 12.2 volts.According to OPTIMA, here’s what you need: OPTIMAoffers an alternative that tricks your traditional charger into charging the deeply discharged AGM battery. Want to stick to the charger already in your garage? This is the preferred method of charging a deeply discharged battery. OPTIMA offers a Digital 1200 12V Performance Battery Charger and maintainer that enhances the performance of OPTIMA and other AGM batteries, recovers deeply discharged batteries, and extends battery life. They have the additional capability of doubling as a battery maintainer for batteries in storage. These are becoming more common, and they work well for all lead-acid batteries, too. That’s why it’s important to purchase a modern, AGM-specific charger for your AGM-style battery.ĪGM-specific battery chargers have special settings and desulfation steps that help recondition and recover deeply discharged AGM batteries. The AGM battery may be just fine, but has slipped below the minimum voltage threshold of the charger to turn on. The charger will remain off because charging a “bad” battery could create an unsafe scenario. If a traditional battery is at 10.5 volts or less, an analog charger will remain off because the battery is seen a defective. Most battery chargershave built-in safety features which prevent them from recharging deeply discharged batteries. They may hook a seemingly bad OPTIMA battery to the old tried-and-true battery charger and get no signs of life. Use a AGM-Specific ChargerĪn AGM battery can stump car guys because it doesn’t work like a traditional flooded lead-acid battery. Before you send your battery to the car parts graveyard, give one of these solutions a try: 1. According to OPTIMA, these AGM-style batteriescan be resuscitated and saved using three different methods. In many cases, though, OPTIMA batteries that are pronounced “dead” are actually just deeply discharged. This allows very high amperage output enabling the battery to power your accessories longer and deeper than a traditional battery while discharging it at the same time.īut even the best batteries can fail, especially when starting batteries are used for deep-cycling applications ( learn more about choosing a battery here and here). One of the great things about OPTIMA’s AGM-style batteries is their extremely low internal resistance. OPTIMA Batteriesare among the most-trusted and popular automotive batteries on the market.
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