Depending on the type of battery tender you purchase, you may also be able to provide your battery with a trickle charge for longer-term storage, helping to keep it at its peak performance for extended periods of use. This eliminates the worry of over charging and damaging the battery. A battery tender, also referred to as a battery maintainer or charger, is designed to safely keep batteries fully charged without over-charging, meaning you can leave it connected indefinitely.īattery tenders usually have indicators which will let you know when the battery is fully charged. Yes, it is generally OK to leave a battery tender on all the time. Is it OK to leave battery tender on all the time? It should have more detailed instructions regarding the LED/light indicator’s meaning, as well as what voltage reading is considered fully charged for your particular model. If you are still unsure, it is best to consult the user manual. When the voltage stops increasing or drops, you can assume the battery is fully charged and disconnect the battery tender. You can begin taking voltage readings when the LED/light indicator is on, and check regularly over several hours.Īs the battery charge level increases, the voltage should increase – usually to a pitching point just under 14 volts. If it is properly connected, you should see an illuminated LED/light indicator on the tender itself.ĭepending on the model, this light will change color or stay lit to show that charging is in progress.Īdditionally, a voltage gauge is recommended to measure the battery’s voltage to further assure that charging is occurring.
To determine if your battery tender is charging, it is important to first ensure that it is properly connected to the battery. How do I know if my battery tender is charging? If the battery tender continues to flash green and red, it is recommended to have the battery checked or replaced.
In other cases, the issue could be low voltage or a bad battery. Sometimes, a faulty alternator can confuse the charger, leading to this flashing red and green. This can indicate that the battery is not receiving enough of a charge, or is overcharging. When a battery tender is flashing green and red, it means that the voltage on the battery the tender is attached to is either too high or too low.
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