For some reason, many of us overcomplicate our solutions and diagnosis of problems (We do it here at Roundforge too!).
See full version: How To Tell If Your Optima Battery Is Bad
For some reason, many of us overcomplicate our solutions and diagnosis of problems (We do it here at Roundforge too!).
Clean corrosion with sandpaper so that you connect to clean, bare metal. Use a wrench to make clamps and other connections reasonably tight (but not so tight that you damage a battery post!).
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Then have a helper try to start your 4x4. (Tip: If we're solo, we put the multimeter on the windshield and use long alligator clips to reach the battery.) [links]
Before you start, make sure your Optima is "charged". What we mean by this is that it should be in whatever state you think is charged, whether that means that it's been on a charger for a bit or that you just drove around for a while. more
You're going to need a couple of things to check your Optima.
Touch the red probe to the positive terminal on the Optima and touch the black probe to the negative Optima terminal. [links]
An alternative to an Optima-specific charger:
6V, 12V Passenger Vehicle / Light Truck (noncommercial)
The OPTIMA Chargers Digital 400 and Digital 1200 12V Performance Battery Chargers and Maintainers are both optimized when used with high-performance AGM batteries, but have enhanced charging capabilities that can also be used with all traditional types of 12-volt lead-acid batteries. more
As a division of the world's largest battery manufacturer, OPTIMA is able to leverage significant engineering resources and data to develop a superior battery-charging algorithm. This algorithm allows the OPTIMA Chargers Digital 400 and Digital 1200 12V Performance Battery Chargers and Maintainers to charge batteries faster than most battery chargers of similar size, and to charge faster than chargers with up to twice the current (amps) output. The safety of OPTIMA chargers is also class-leading, with reverse polarity protection, spark-free connections and over-temperature protection. more
This is the preferred method of charging a deeply discharged battery. here
We offer a wide variety of options to charge your Optima AGM battery. We recommend CTek, Enerdrive, Victron and Battery Fighter Battery Chargers .
No, as long as the voltage is properly regulated. Because the Optima battery has a very low internal resistance, it will accept high current more efficiently than conventional batteries.
Most high-quality, modern battery chargers now have built-in features to charge AGM batteries like Optima batteries. Some have specific AGM settings, which should be used to charge an Optima battery.
Always use a voltage-regulated battery charger with limits set to the above ratings. Overcharging can cause the safety valves to open and battery gasses to escape, resulting in premature failure. These gasses are flammable! You cannot replace water in sealed batteries that have been overcharged. Any battery that becomes very hot or makes a hissing sound while recharging should be disconnected immediately.