Plugged in to charge battery, red light flashing, no green light on, charged all night still flat, what could be the problem.

Sometimes, this is a result of a battery that is too cold (below freezing-warm it up). Sometimes it can be too hot (discharged under heavy stress-let it cool down). Sometimes there may be insufficient voltage, I have had problems in older houses, get closer to the electrical panel to plug in, or you may have to wait until you get home. Red flashing may mean https://www.youtube.com/watch?v=8rZqYmPsZycthe charger or battery is to hot and must cool down before it will charge. The charger will not charge a battery if the lights are flashing. Solid Red light means it is charging and solid green light means it is charged. Plug the charger in first before putting the battery on the charger. If the charger has been dropped or hit the floor the coil inside could have broke loose and damaged the charger requiring it to be replaced. Below is an unconventional way to charge the battery if the charger is no good. BE CAREFUL
how to charge broken makita BL1830 Li ion battery

It means that the charged battery is full. Some chargers have a steady glow, others have a flashing light to show that the battery is charged. When you run the helicopter, is the battery fully charged, does the helicopter blades spin flat out? If so, the battery is charged and the flashing light indicates the battery is charged. If the battery isn't charged or the blades don't spin enough to lift the helicopter, or fly for some time, then the battery isn't charged and the charger may be faulty. Take it to a hobby shop to see where the problem lies, the charger and its blinking light, or the battery.

yes the reason the green and red light were flashing the way they are is because its a warning to you that the battery is either no longer good or there is problems with your wireing. Also those vaccumes were designed to not charge when there to cold or to hot as a saftey issue.

Janice check your charger it could not be charging the batteries. Now always charge your batteries overnight while you sleep When you get up lights on the charger should be red and green if they are red and yellow then the charger hasn't fully charged the batteries and overnight should be more than enough time to charge fully. This could indicate a bad battery remember new doesn't always mean good. Like they say always charge before use and this goes for new batteries too you need to charge new batteries nightly for 10-15 days before they start operating at 100%. If when you plug in the charger before bed and the lights are red and green then there is a problem with the charger or the batteries or the charger circuit Hope this helps you

Phil the red means battery is low and the green is a speed limit code because of the low battery if you have charged your batteries and you still get the red then you need to check the charger after charging all night does the yellow light on the charger turn green? if when you first plug in the charger if the red light is on and the other light is green then there is a problem with the wiring or connection to the batteries from the charger and you aren't charging the batteries. if when you plug the charger in and you get a red and yellow light then the charger is working but you don't ever ge a green light and the battery level gauge is still showing red then you need to replace the batteries Hope this helps

According to the owners manual for these swimming pool lights, this is what each colored indicator means. Hope this helps.


Solid green
The battery pack is fully charged.
Slow flashing green
The battery pack is almost fully charged.
Slow flashing yellow
The battery pack is half charged.
Medium flashing yellow
The battery pack is less than half charged.
Fast flashing yellow
The battery pack has almost no charge.
Fast flashing red
A charging error has occurred and the light should be unplugged and then plugged back in. If the Fast Flashing Red persists after several attempts, the battery condition is questionable.



Also in the trouble shooting guide, it mentions this:


Problem: Red Indicator Light Is Flashing While Charging

Solution:
A red flashing indicator light when charging indicates a selftest
error condition. Unplug the product and plug it in again.
Try this several times; if the indicator light continues to flash
red, unplug the GlowBuoy and take it to an authorized service
depot.

What does indicator light mean?

• Steady red light: Battery is charging.
• Steady green light: Battery is fully charged.
• Flashing red light: Battery needs charging.
• Flashing green light: The music receiver is switched on.
• Flashing red/green light: The music receiver is available to be added to your phone.

All rechargeable batteries have a limited life, and as they age their charge capacity reduces over time and you get shorter and shorter time between charges.
Recharage batteries have a finite number of charge and discharge cycles and batteries over 2 years old are considered nearly worn out. Worn out batteries won't charge up at all.

Ok the lightning bolt is your power indicator: solid green-charging, Flashing green-fully charged, flashing red-low battery, flashing red three times the once green-bad battery. the "trash can" looking one is your hard drive activity indicator it will flash while your hard drive is reading and writing.

Then I'd say it's a reasonably sure thing that the green light is just burned out, The lights are supposed to be off at first, then red when there's a partial charge, then green when there's a full charge, then flashing between red and green when the "battery saver" kicks in. If you're seeing off, then red, then off, then flashing red, then that means everything in the charging circuit is working perfectly, there's just no green light.