Hi, Ann. The output current of the charger 4. Charging your battery on a low amperage on a smart charge is fine if you are looking to maintain your battery or keep it on a low charge for a period of time. ATV batteries should be charged any time the battery voltage drops below 12.4 – 12.6 volts. A battery tender is not to be confused with a battery charger, but one wouldn't call this device a tender. Deltran's Battery Tender Plus ranks as our top overall car battery charger, but the company's Battery Tender Junior is the perfect choice if you're simply concerned about long-term battery storage. A dead or dying battery can easily leave you stranded at the worst possible time, ... use a trickle charger or battery tender with an automatic shut-off feature to keep it in good condition. BATTERY TENDER® Plus 1.25 Amp Battery Charger. Switch your battery charger off, or if your charger does not have a power switch, unplug the charger’s power cord. 2-4 ampere is typical for a maintenance charging, and it will take around 24 hours to charge a dead battery at this load fully. If you're intent on recharging your battery, you're going to need a battery charger. These devices work through electricity and they replenish the charge on the un-used battery at the same rate the discharge occurs. Connect the battery charger. The time needed to charge any battery depends on: 1. Most tenders are in the 0.75a to 1.25a range, and chargers are typically 4A>. If the battery is below a certain level of charge, it will activate bulk charge mode, delivering its full charge at a constant rate. It tapers the charge on and off as the battery discharges and recharges.” “Harley suggests leaving the Battery Tender connected if the battery is left in the bike during storage,” adds Shanneba. With a seriously depleted battery, the best thing to do either before or immediately after a jump-start is to connect it to a dedicated battery charger. Usually, a standard car battery charger is giving out 4-15 amperes. Only when that surface charge is recognized will it begin to pump in a current to bring the battery to a full charge. 3. Car battery death, for the purposes of this article, refers to the battery’s inability to hold a charge, usually caused by sulfation. Check your car battery for any settings for the charging rate and apply the charging rate for your needs. One was the regular Battery Tender and another was a Battery Tender Jr. Actually, the Battery Tender Jr. just stopped working - the regular Battery Tender actively killed batteries. (If you don’t have and use one of these, it’s probably a big part of why your battery is dead. Easy REPAIR of two Battery Tender Jr trickle chargers. Also, be sure to remove all jewelry and metal tools from the work area. What are the charging stages? This ‘Plus’ model provides 50% more power than the BATTERY TENDER® Junior model, making it suitable for larger vehicles with a heaver voltage draw. It would take a 10 amp charger about 11 hours to recharge a dead battery to near 100% full charge. Find helpful customer reviews and review ratings for Battery Tender 800 is a SuperSmart Battery Charger that will Constantly Monitor, Charge, and Maintain your Battery. 2. When you hook up the leads to the battery, the smart charger attempts to sense an initial surface charge so that it recognizes that it is indeed connected to a battery. I just hooked up the tender and touched the battery terminals with booster cables hooked to a good battery. Your battery is most likely scrap anyway, if it's the maintennace free type, they don't rebound well at all from being completely discharged. The BATTERY TENDER® Plus 12 Volt Smart Charger is a 1.25 Amp battery charger that’s fully automatic, and includes a convenient quick connect harness for hard to reach batteries. It is the battery tender junior. The newer smart battery chargers will not turn on if the voltage of the battery is too low. Modern float chargers get a battery charged and then switch on and off automatically to keep the battery’s charge rate at the optimal charge level. Just sayin’.) To calculate your total charge time for a battery, a good rule of thumb is to take the amp hour rating of the battery and divide by the charger rating (amps) and then add about 10% for the extra time to totally top off the battery. Read honest and unbiased product reviews from our users. I hooked it up and it keeps flashing the red light which means the battery is not charging. The 12-volt/0.75-Amp battery charger is compact and lightweight enough to save space in the car or in the garage. Overcharging the battery is also a bad idea, even a small spark can cause an explosion. Battery 101: The Difference Between a Trickle Charger and a Regular Battery Charger A lot of factors that come into play when trying to decide the right battery. The charger will then charge less used batteries much like a trickle charger and then switch off automatically when the battery is fully charged and switch on again if the battery charge falls below a certain level. This car battery charger features a quick connect harness and includes ring terminals and alligator clips that are easy to hook up to your battery and get your car going again. This type of battery charger is one that I use and highly recommend. Make sure the battery terminals are properly connected to the charger. How to Use a Battery Tender to Properly Charge the Car Battery? A good quality battery trickle charger (or maintainer) can be used every day. Attach the charger to the battery terminals in any order. The efficiency of the battery at accepting charge (there are some limitations). The Battery Tender Plus 12V 1.25A Battery Charger is smart charging made easy. 5. I show how to test with an ESR Meter on bad capacitors in circuit with the MESR V2. Battery Tender 021-0123 – Keeps Batteries in Best Shape. It has a sensor that indicates when your charge is too low and needs to start charging, or senses your battery is charged and will stop supplying a charge. It monitors the battery and turns on when needed 2005 SRT 10 Ram Quad Cab Red 1500 original miles (sold 10/12/17) (totaled by new owner 11/03/17 ) A long, slow charge using a charger that is specific to the type of battery is optimal because it can compensate for temperature, the rate of charge and allow for the conditioning of the battery. 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