![]() Also make sure to keep the terminals clean-corroded battery terminals produce more unnecessary battery replacements (and a zillion other electrical problems) than any other single cause. Instead, always use a washer and jam nut on the bolt for a tight, secure connection. There are only a few threads inside and they can easily be stripped or burned due to arcing, or the terminal lug can be loosened in the case when the bolt bottoms out. ![]() When bench-testing and charging a GM-style battery, don't just run a bolt into the delicate side terminals. If you need a different height than an Optima battery offers, you. The height of an Optima battery is typically between 5 7/8 to 8 5/16 tall, depending on the exact battery model. Don't throw away the plastic terminal caps-save them in case you want to store the battery later. No, Optima batteries do not come with an adapter for a different height battery. In fact, battery manufacturers recommend that you connect the vehicle's main cables to the side terminals in high-load applications, then use the top posts for winches, inverters, and other high-current add-ons. Excessive charging current and temperatures will age a battery before its time and can even be dangerous when you overcharge a battery, essentially you are manufacturing highly explosive hydrogen.įor maximum model coverage, many aftermarket batteries are equipped with top and side terminals, and there is no reason you can't use them both. So-called sealed batteries can be especially sensitive, but in no case should any automotive battery be allowed to heat significantly while charging. You don't need a special charger to charge OPTIMA batteries, but we make chargers & maintainers that do a great job of charging OPTIMA batteries or any other flooded lead-acid batteries. Other manufacturers advise similar limits. Just be sure not to exceed a charging rate of 10 amps and be sure to monitor the battery periodically during charging to make sure everything is going smoothly. For maximum battery life, Optima advises that normal charging should be limited to 10 amperes. By the way, this trick also works with conventional batteries, though it's not quite as effective. Using this method, we brought several deep-discharged batteries back to life. This will in effect trick the charger into delivering the necessary current to the discharged battery. However, make sure the voltages or the lead-acid charger are within the charging voltages shown in this article.Here's the magic fix: When an AGM battery won't charge by ordinary means, simply connect a second, well-charged battery (12.4 volts or greater) in parallel with the dead unit-positive to positive, negative to negative. ![]() ConclusionĬan I charge a LiFePO4 battery with a normal charger? It will take longer for a lead-acid charger to charge a lithium battery than a LiFePO4 battery charger. LiFePO4, on the other hand, only uses the first stage, which is bulk. Lead-acid batteries have a three-stage charging cycle. Will the battery be efficiently charged with a lead acid charger? These voltage values can vary by manufacturer. If one or more cells reach a high enough voltage level (3.65V or higher), the BMS will turn off the charging to ensure the battery is not damaged. If the charging voltage of the lead-acid charger is too high, the BMS of the Lithium battery will stop charging. What happens if the charging voltage is too high? ![]() We can see that the charging voltage of a lead-acid charger (14.4V to 14.6V) is similar to the one of LiFePO4.Įnsure the voltages of your lead-acid charger are within the specifications of the LiFePO4 battery. Here is a voltage chart of a LiFePO4 battery: Safe lithium charging voltages While LiFePO4 is fully charged at 14.6V and then drops back down to 13.6V after being charged. Most lead-acid chargers have a charging voltage of 14.4 to 14.7V. If we take a look at the charging voltage of a GEL or AGM lead-acid battery charger, we can see that the voltage range is suited for a LiFePO4 battery. However, if you are in a hurry and have a lead-acid charger available, you can use it too. Lithium iron phosphate batteries, or LiFePO4 for short, will need a special battery charger to charge efficiently.
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