Oh Boy, what a bunch of MASOCHISTS !
The question was general in nature without any data or technical information to be able to supply a logical response.
The lamp has 9 LEDs with 3 AAA = 4.5 Volts battery bank.
There are an internal resistor that is in series with all the LEDs that are parallel connected.
There are several LEDs manufacturing processes that give different Forward Voltage for the LEDs, I presume that these type may be the 2.4 or so volts, I may be wrong, since the LEDs are 9, then I do not expect the Series parallel scheme.
If each LED receives 40 milli amps then the overall current would be 360 milli amps -- which I expect to be less, just for battery life considerations, I would say around 250 milli amps.
I fusing some of those battery charges, make sure that the LED circuitry has the necessary resistance to protect the LEDs.
Even those CFLS that run with 6 volts, will give much more light than the above mentioned 9 LEDs flash lamp, or torch.
Home Depot in Dallas have some of 6 and 12 volts lamps for AA batteries or external power.
I use 2600 mah NiMH batteries in them, which I buy sometimes at less than 50 cents each ( Fry's sales), then I adapt the external power plug to charge the batteries or use the power directly.
Nando