If the battery is under 10.5 volts, the charger will try to recondition the battery for about an hour. After that it will either charge normally, or show the bad battery symbol. Look at this review f three chargers with yours starting at about 7 minutes. The charger starts at 6.1 volts so your charger may be bad:
https://www.youtube.com/watch?v=TyDL5TM0Oko
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SOURCE: battery charger
Take your charger out on a boat and dump it into the sea. Then go to the store and buy a new one.
SOURCE: Battery Dont Charge
jpierre's solution (in another thread) was right on the money. Touch
the positive (+)end of the 9v battery to the positive (+) end of the
camera battery.Leave them touching for a few seconds (10 seconds should
be more thansufficient). Seems these lithium-ion batteries are subject
to a'digital memory.' Subjecting it to a volt surge almost three
timeshigher seems to clear it.
http://www.batteryuniversity.com/parttwo-34.htm
In short, it works like a charm.
SOURCE: Battery charger light flash
Its pretty simple to fix. The lithium battery has just depolarized. Just buy a 9V battery.... put them end to end... the 9V and the lithium and touch the metal parts of them. hold for 20 seconds... if it doesn't work, lick the 9V to conduct the electricity better.. hold for 20 seconds and put directly on the charger... I just did this, and it is charging as we speak! good luck!
SOURCE: Battery will not charge
I found this while searching to find an answer to solve my problem. It worked! Some say that it took them about 20 times... it took me about 7. Be patient and just keep trying! Hope this helps!
My NP 20 gave me the flashing red light of death and I got Casio to replace it. Then I had the same problem with my second NP 20 so I dug around for a way to fix it and I found the following advice on a site called FixYa. It worked instantly and I didn't risk ruining my battery.
ylu1 writes:
I had the same problem as this.
what i did was...
i kept putting the battery on the charger then took it off as soon as the red light came on.
i did this about 6 times.
doing this puts a bit of charge in the battery each time before the charger starts to flash.
after the battery as got enough charge in it it can start to charge.
hope this helps.
SOURCE: flashing lights
I had the same problem. 1 of four way's can fix it. #1 Put a batt. that has a little charge in that flashing spot 1st. and see if that works. #2 put the batt. in that flashing slot first and then in the 1st slot, If that did'nt work, #3 Put Batt. in backwards for 1 sec. in and out fast. and I do say very fast, In that flashing spot. #4 buy a new one. The one that fixed mine was #1 and it stoppppped flashing, The order I put them in was - 3-1-2-4 I put in #3 batt. first, it was the one flashing And it worked, You may have a bad batt. or it's on it's way out, but try It. worked for me!
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