Black and decker battery charger blinking green

If the charging LED is flashing green on your charger, there has been a temperature deviation. The battery might be too cold or too hot to use or charge.

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This can be solved by doing the following:

Let the battery cool down or warm up.
When the battery is at the correct temperature, it can be used or charged again.
Use the battery charger in ambient temperatures between 5°C (41°F) and 40°C (104°F). If the battery temperature is lower than -10°C (14°F) or higher than 70°C (158°F), the battery will not work during discharging. If the battery temperature is lower than 5°C (41°F) or higher than 50°C(122°F), the battery will not charge.

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Article ID : 00278112 / Last Modified : 05/23/2022

The CHARGE light may flash for the following reasons:

The environmental temperature is too cold to charge the battery pack.
The battery pack has not been used for a long time.
There is a poor connection between the battery and charger.
There is a problem with the battery pack.

The CHARGE lamp may flash fast (multiple times a second) or slow (around 1.5 second intervals), depending on the cause.

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 slow flash should stop after a short while or after the temperature returns to a suitable range between 50°F and 86°F (10°C and 30°C).

Fast flashing indicates a poor connection between the battery and charger or a problem with the battery pack. Remove the battery from the charger and then use a dry cloth or cotton swap to clean the metal contact terminals on the battery. Afterwards, try charging the battery again. If the flashing continues, then the battery may need to be replaced.

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Article ID : 00013416 / Last Modified : 05/02/2022

The CHARGE light may flash for the following reasons:

The environmental temperature is too cold to charge the battery pack.
The battery pack has not been used for a long time.
There is a poor connection between the battery and charger.
There is a problem with the battery pack.

The CHARGE lamp may flash fast (multiple times a second) or slow (around 1.5 second intervals), depending on the cause.

Fast flashing indicates a poor connection between the battery and charger or a problem with the battery pack. Refer to the rechargeable battery does not charge properly using the supplied battery charger article for details. Afterwards, try charging the battery again. If the flashing continues, then the battery may need to be replaced.

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I have a Black & Decker weed eater with a 20Volt battery. Today I wanted to charge the battery, plugged it in and the charger light started blinking red. I have spare charger so I plugged the battery into that one and it was blinking green which means it is charging. When it blinks red, what does that mean. Is the charger bad. It is only 2 to 3 months old.

If the battery was hot, why did the second charger work? I tried it again in about 4 hours and it stilled blinked red.

elbo

Well-Known Member

( copied from the web )
blinking red light indicates battery is too warm to recharge . this is normal for lithium ion batteries . this is a great tool and i hope my answer helps . see less the battery will need to cool for 15 minutes or so after using ( especially after complete discharge ) .

Thanks, I will try in the morning to recharge it.

JoeD

Well-Known Member

What is the blink pattern. Different patterns indicate different issues.
According to this manual on page 5 the patterns are printed on the label.

CHARGER DIAGNOSTICS
This charger is designed to detect certain
problems that can arise with the battery
packs or the power source. Problems are
indicated by one LED flashing in different
patterns.

I tried a different battery on the charger this morning and it was the same thing. Red light blinking fast. Looking in the manual, that pattern is next to the broken battery. I put that battery on a different charger and the green light came on indicating the battery was charging. This charger is not that old, maybe 3 months.

JoeD

Well-Known Member

Definitely sounds like a defective charger. Less than a year old, you might be to get it replaced under warranty.

After contacting Black & Decker and giving them the info they needed, they will send me a new charger. Thanks for all the replies.

Remember, if it’s plugged in it’s subject to getting dinged by lightning . It doesn’t have yo necessarily get fried to wreck it. I fried a board in my Hobart welder once like that, lesson learned. Never had an issue with any chargers though.
I’m not a big fan of B n D preferring the higher end stuff. That said we got a full set of 18 v hedge trimmer, string trimmer and blower in 2012. We have literally worn out the blowers bearings from so much use but those batteries just won’t die. 6 years later not as strong surely but still working plenty well. That says something!

I had the same problem and I simply turned my plug around to face the other direction. No more flashing red light, now blinking green. Reversed the polarity, I guess?

What does a blinking green light mean on a battery charger?

If the charging LED is flashing green on your charger, there has been a temperature deviation. The battery might be too cold or too hot to use or charge. This can be solved by doing the following: Let the battery cool down or warm up.

Why is my Black & Decker charger blinking green?

A: The blinking green light indicates the battery is charging. When fully charged, the green light turns solid. The length of time the blinking green continues depends on how discharged the battery is.

How do I know if my Black and Decker battery is bad?

A service center list is available on line at blackanddecker.com or by calling our toll free number 1-800-544-6986. The batteries can also be tested using a digital multimeter. To test the battery, it should be charged on a good Firestorm three-hour charger (do not use any other charger).