Battery pack My camera is saying Change Your Battery Pack, but shows that the camera battery is fully charged. Does this mean the battery is defective and should be replaced?

the trimmers switch may be faulty.

CHARGING THE BATTERY PACK
Battery packs for this tool are shipped in a low charge condition
to prevent possible problems. Therefore, you should
charge them until the green LED on the front of the charger
comes on.
NOTE: Batteries will not reach full charge the first time they
are charged. Allow several cycles (operation followed by
recharging) for them to become fully charged.
CHARGING A COOL BATTERY PACK
See Figure 3.
If battery pack is within normal temperature range, the red
LED on charger will come on.
NOTE: If the charger does not charge the battery pack
under normal circumstances, return both the battery pack and
charger to your nearest Ryobi Authorized Service Center for
electrical check.
n Charge the battery pack only with the charger provided.
n Make sure the power supply is normal household
voltage, 120 volts, 60 Hz, AC only.
n Connect the charger to the power supply.
n Place the battery pack in the charger aligning raised rib
on the battery pack with the groove in the charger.
n Press down on the battery pack to be sure contacts on
the battery pack engage properly with contacts in the
charger.
n Normally the red LED on charger will come on. This
indicates the charger is in fast charging mode.
n Red LED should remain on for approximately 1 hour
then the green LED will come on. Green LED on
indicates battery pack is fully charged and charger is
in maintenance charge mode.
NOTE: The green LED will remain on until the
battery pack is removed from the charger or charger is
disconnected from the power supply.
n If both yellow and green LEDs come on, this indicates
a deeply discharged or defective battery pack.
Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
red LED does not come on after 30 minutes, this may
indicate a defective battery pack and should be
replaced.
n After normal usage, a minimum of 1 hour of charging time
is required to fully recharge battery pack.
n The battery pack will become slightly warm to the
touch while charging. This is normal and does not
indicate a problem.
n Do not place the charger and battery pack in an area of
extreme heat or cold. They will work best at normal room
temperature.
NOTE: The charger and battery pack should be placed
in a location where the temperature is more than 50°F
but less than 100°F.
n When batteries become fully charged, unplug the
charger from power supply and remove the battery
pack.
Source(s):http://toolboyworld.com/eBay/Ryobi_P110/...

If the red light is flashing rapidly it means that your charger has determined that your battery pack is in need of replacement and a safety circuit will not allow it to be charged. You may have an actual fault in the pack OR it may just mean that you have allowed the pack to discharge below the manufacturer's recommendations and the safety circuit has been fooled into thinking that the pack is defective. You need to decide which scenario is more likely correct. Using a DC voltmeter, determine if the battery pack has any voltage at all and which connections are positive and negative. If there is zero voltage, then you probably should go shopping and send your current battery to a recycler. If the battery pack does show some voltage, that is a good sign. TRY THIS AT YOUR OWN RISK! You can attempt to partially charge the battery pack (while not in the charger and not in the tool) by using test leads to connect it pos-to-pos and neg-to-neg to a fully charged battery of similar voltage/amperage. Only connect them together for a couple of minutes. Remove the leads and test with the DC voltmeter again to see if voltage in the questionable battery pack has increased by more than a volt or two. If so, it is still taking a charge. Move it back to its charger to see if there is now sufficient voltage to not trigger the safety circuit and allow it to charge normally. Wear eye protection. Don't cross leads. Don't try this on an obviously damaged battery or one that feels hot.

Does the battery pack work? Leaving it on the charger for 24 hours shouldn't hurt the pack (too much) since the charger shuts off when the pack is fully charged. The most likely result would be a slight reduction in the capacity, but it should still work.

You shouldn't need to order another battery pack unless it no longer works.

What's more likely to be the issue is that the spring loading on the door has loosened over time, and the battery simply isn't being pressed up against the contacts in the camera firmly enough.

The reason you are still getting this error despite the fact that you've placed a new fully charged battery means that the battery is not compatible with the camera. The fact that it states this is because the battery isn't capable of handling the Olympus camera. I would suggest for you to buy a recommended battery pack by Olympus, or a rechargeable battery pack to avoid these errors.

Hi,

The yellow light means that there still is an amount of charge on the battery, meaning that it isn't fully discharged. The red light means that it is partly discharged and you can charge it up.

Hope this helps. If it does, I'd appreciate a 4 thumbs up. Thanks,

Handie Andie

Take a picture with the new battery pack. Is the picture also blank? Are the menu selections still visible in the LCD? Have you tried pressing the DISP button on the back, but the screen still remains blank?

If the answer is yes to these three questions, this sounds like it might be a defective CCD imager. If so, Canon should fix this for you for free, including free shipping both ways. This is regardless of your camera's warranty status. Please check this link for more info.

Applicable cameras include:
A40, A60, A70, A75, A80, A85, A95, A300, A310, S1 IS, S60, S200, S230, S330, S400, S410, S500, SD100, SD110, IXUS V2/300/400/430/500, IXY Digital 30/30a/200a/300a/D320/400/ 450/500

If both yellow and green LEDs come on, this indicates
a deeply discharged or defective battery pack.
Allow the battery pack to remain in the charger for 15
to 30 minutes. When the battery pack reaches normal
voltage range, the red LED should come on. If the
red LED does not come on after 30 minutes, this may
indicate a defective battery pack and should be
replaced.
n After normal usage, a minimum of 1 hour of charging time
is required to fully recharge battery pack.

THis is really a sign of a bad battery that is always being detected fully charge but its really drian , so it will be better for you to replace that battery.....

Unfortunately, Makita’s li-ion battery packs have a design flaw. After having the same problem with my two batteries, I took it apart and saw the problem immediately. You see each battery pack has ten li-ion battery cells and a circuit board with a memory chip witch holds the charging history of the battery pack. But that memory chip constantly draws power from 2 of the 10 batteries. The current it draws is very small but if you consider it over 6 month or more, the power drain becomes very significant. You end up with a battery pack with 8 still fully charged battery cells and 2 drained battery cells. When you put this battery pack in the charger, it detects weak battery cells, assumes they are defective and refuses to charge. To avoid this problem you should charge your battery pack often, even if you haven't used it, every two months should be ok.
I suspect that Makita doesn’t make these battery packs, they make power tools, good ones too. But Makita should definitely have a few words with their supplier before they become a liability!