The flashing red probably means that the charger is working correctly and is indeed charging the batteries. The light should turn green when charging is complete after anything from 1 to 16 hours depending on how this charger works.
Do the following test: Fit the charger with your batteries and connect it to the mains. After 1 hour check if there is a detectable temperature rise in the batteries. You can do this without interrupting the charge cycle by touching the cells with the back of your fingers. If the temperature is still low, let it continue for another 15 hours or so, checking every now & then for any temperature increase. Should the temperature rise more than a few degrees, then stop the charging by removing the charger from the mains. Should the red lamp remain flashing after 16 hours, then I suspect you to have a defective charger.
I took out the two batteries and inserted only one at a time. One Battery charged normally with the solid red light going to green. the other started flashing red within a minute after being inserted and remained flashing for an hour (this is a 15 min charger). My conclusion is that the battery is defective.
You got it! High speed chargers, such as yours, have sensitive electronic detection of voltage deviation as well as temperature monitoring to avoid explosion of defective batteries. The flashing red light in your charger obviously is there to warn of defective batteries.
Blinking red means fault, not charging!
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The flashing red light means the battery or batteries are bad dude.
What's up was kindergarten the worse five years of your life?
The flashing red probably means that the charger is working correctly and is indeed charging the batteries. and it maybe break. If it was broken. you can buy new one from MUBUY.COM
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