![]() Most battery chargers built in the last twenty years, have a built-in safety feature that prevents the battery charger from recharging a deeply discharged battery. That translates to the very high cranking power that we enjoy. The great thing about AGM batteries, like the OPTIMA, is that they have very low internal resistance. However.odds are it is not! You just need to understand a key difference between an Optima battery and a conventional lead acid battery. If you connect a conventional lead acid battery charger to an Optima battery with less than 10.0 volts in the battery, the battery charger will often just "click and turn off! Your first thought is the battery must be defective. ![]() what happens when you deeply discharge an Optima Battery. The 6-volt Optima Batteries like their 12-volt counterpart are a thousand cranking amps. There is four feet of battery plates in each one of those cells. They were originally designed by Gates of belt and hose fame. I have been selling Optima Batteries since their introduction. In the installation process it would be easy to tip a battery enough during installation to spill a little acid which would almost immediately remove some paint. To us that own and drive antique vehicles that is very important because the battery locations in many of our vehicles are under the floor or on the firewall, which involves lifting a battery over the fender or a running board. Read the instructions that come with the charger to be sure you're operating it correctly.Optima batteries are well know for their reliability and the fact that they are a sealed battery which means no risk of an acid spill. Many battery chargers deliver two to six amps (some allow you to choose the amperage level) and will take at least several hours to recharge a dead car battery. Other chargers work differently they may not shut off automatically but rather have gauges that let you know when the battery is charged. The Optima charger will automatically shut off when the battery is fully recharged. The Optima charger that we're using here has a switch that sets it for either a motorcycle or car battery or one of Optima's high-performance batteries. For the greatest safety, keep the charger as far away from the battery as the cables allow. Give the clamps a little wiggle to ensure that they have a good connection to the terminals. Read the instructions that come with the battery charger, as each charger operates a little differently.Īttach the charger's red clamp to the battery's positive terminal and the black clamp to the negative terminal. Next, make sure your battery charger is unplugged from the wall socket-it uses household current to charge the battery-and that it's switched off, just to be doubly sure there's no current flowing through it. Most auto-parts stores carry chargers and they're readily available through online retailers such as Amazon. In the following videos, we use an Optima charger that we have had good experience with in the Car and Driver garage. Better still, if a friend or relative has one that you can borrow, you're in luck. If you're intent on recharging your battery, you're going to need a battery charger. If the battery won't even take a charge, it's almost definitely dead and needs to be replaced. But if it then dies a couple of days later, it could be either a failing battery or the fault of something else in your car's electrical system-starting with the alternator, which supplies electricity to run the car and charge the battery. If the battery takes the charge and you can restart your vehicle, it might not be totally dead. Attempting a recharge will also help you know if you need a new battery. Did you leave the headlights on last night? Or an interior light? Either of those could be enough to run the battery down. The best thing you can do when your battery goes flat suddenly is to figure out why and what shape it's actually in. How to Disconnect Your Vehicle's Battery.
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