Nimh batteries give low batt signal even when

The first thing to realize is that most wireless keyboards and mice will eat regular alkaline batteries for lunch. This is where most of my clients have gone wrong. It seems they are replacing batteries in a device around every month or even more often. For an office full of wireless devices, this can add up very quickly. Plus it also seems that certain devices act inconsistently with regular alkaline batteries. If you need to purchase a non-rechargeable battery for your wireless devices, you should purchase the "advanced" or "performance" type of batteries such as the Energizer Lithium or Duracell Quantum brands. For what it's worth, the Apple devices usually come with Energizer Lithium brand batteries. However, high performance batteries are more expensive than alkaline batteries and their cost will add up over time. So I don't recommend buying these batteries except in a pinch.
What I really recommend are a particular type of rechargeable battery called low-discharge Nickel Metal Hydride (NiMH). I believe many people stay away from rechargeable batteries because of misconceptions based upon past generations of rechargeable batteries. Many people perceive rechargeable batteries as expensive and prone to failure. But the worst stigma associated with rechargeable batteries are that they don't hold their charge and never seem to be ready when they are needed. The reality is that today's new generation of low-discharge NiHM rechargeable batteries have resolved many of the issues that previous batteries suffered from. Low-discharge NiMH batteries hold their power on the order of months or years after charging. Unlike previous iterations of rechargeable batteries that lost their charge quickly, you can charge these batteries any time and they will be ready for use when you need them.

In a convoluted way. The FE-46 uses standard AA batteries. You may use either disposable alkaline or lithium batteries, or rechargeables. If you use rechargeables then you must charge them outside the camera. There are chargers that run from a computer USB port, and there are even AA batteries that plug into a USB port. However, you canNOT charge the batteries by connecting your camera to your computer.

Use a good quality lithium battery size "AA" such as Energizer e² Photo batteries. About $6 US for 4 pack.
Or you can use a good quality NiMh rechargeable . Choose one that has at least a 2000 such as Duracell. About $24US including charger. Good for at least several hundred recharges, although they will not take as many photos as the lithiums above.
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Power Source Li-ion Rechargeable Battery (LI-42B) Are you using the above battery?
Check the voltage to make sure it has enough as printed on the charger or the battery.
Alkaline rechargeables, or NiMH rechargeables, or other types of batteries don't have enough voltage or amperage as compared to Li-ion.

Do you experience low battery? Have you tried using brand new and fully charged rechargeable batteries like NiMH or NiCd?

Switch from alkaline batteries to pre-charged Nickel Metal-hydride (NiMH).
My best experience is with these batteries:
#1. RayoVac (pre-charged)
#2. Kodak (pre-charged)
#3 Energizer (rechargeable)

Find them at WalMart or online

"pre-charged" are new technology rechargeable batteries. They are GREAT! They outlast alkaline at least 15 times per charge.

AA alkaline batteries dont have the "power" that is require by the bigger better cameras to take and process pictures. NiMH is the best route.

try energizer lithium batts- some cameras very very strange about batterys-have a sony that will only work w/ sony or energizer lithium-bought all other types and they do not work-i get 300-500 pics per set of lithiums-good luck

I had the same problem and i called up cutomer support on 1300 659 678 (Australia) and they said that the problem may lie in your batteries. It was advised that you use Lithium batteries, and to avoid use of Alkaline, since they dont have the required power to operate the camera which is why it turns off right away. As to what type of rechageable batterires to use i am not sure, i think it was Nickel-metal-hydride (NiMH) batteries. Hope this solves your problem.

Have you tried it with lithiums? It may not be a discharge problem so much as a low-battery detect problem. The NiMH are very low voltage even when fully charged compared with a lithium, maybe that's a clue. Either way it looks like a trip to Mr Pentax to get it orted :-( FWIW I use lithium AAs routinely, I tried some NiMH that I had and only got about 250 shots per charg and they failed a bit too abruptly - mid file write! - for my taste. I get 800-1200 shots from a set of Energizer AA lithiums, they give me plenty of warning of impending failure, I can stand the cost and I value the peace of mind that they give :-)