So, you will need to check on all that, and that will help you out optimally through the problem that you might be facing. It happens when either the battery terminals are corroded, the terminals are not tied tightly enough, or the battery charger wires have been damaged. That is definitely something that you will need to be considerate about. If the red and green lights on your Battery Tender charger are blinking together, that means your charger is connected to the AC power, but it is not connected to the battery properly. This is pretty simple for sure, and with that, you get to enjoy the perfection of having the fully charged battery as well at the same time. Once you see the indicator, you can simply take the battery from your charger and connect it easily with any equipment that you might want. It means your battery is properly charged and that you can take it off the charging and use it for any applications that you might want to without having to worry about a single thing at all. If your battery tender charger is blinking the red light and at the same time you have a solid green light on it, that is an indicator to draw your attention towards the battery. Naturally, that is not something that you would like to have on your battery Tender charger, and if you are facing this issue, you will need to carefully check both of the terminals and fix them up properly, so you don’t have to face the problem again on your Battery Tender. If the flashing continues, then the battery may need to be replaced.That means, if you have connected the battery terminals with the charger opposite, that will cause the issue, and then you will have to face the issue with the battery tender blinking red and green alternatively. Afterwards, try charging the battery again. Refer to the rechargeable battery does not charge properly using the supplied battery charger article for details.

The slow flash should stop after a short while or after the temperature returns to a suitable range between 50☏ and 86☏ (10☌ and 30☌).įast flashing indicates a poor connection between the battery and charger or a problem with the battery pack. Slow flashing occurs if the battery has not been charged for a long time or if the environmental temperature is not suitable for charging the battery. The CHARGE lamp may flash fast (multiple times a second) or slow (around 1.5 second intervals), depending on the cause.

There is a problem with the battery pack.

There is a poor connection between the battery and charger.

The battery pack has not been used for a long time.

The environmental temperature is too cold to charge the battery pack.

The CHARGE light may flash for the following reasons:

Cen tech battery charger green light