presta
Guru
So you're no longerIn which case the lights would be fake.
then?puzzled about that assumption the batteries are fine
If the battery is lasting for 3-4 hours at 250mA, then that's a capacity of about 750-1000mAh, regardless of whether the load is a lamp or anything else, and regardless of whether it's faulty or not.
Note to those who are still insisting that the battery is faulty:
It's not possible to be precise about the exact battery life being obtained unless there's an equally precise measurement of the run time, and it's not possible to say whether the manufacturer's quoted capacity is being met unless the measurement's done under the load, temperature, and end point conditions specified by the manufacturer.
It should also be noted by anyone who wants to nit-pick about the exact capacity that the measurement will depend on whether you use a constant current, constant resistance, or constant power load, and that the lamp itself (faulty or otherwise) isn't necessarily any of these.