I have been given a Gelert 12 LED camping lantern (minus it's mains charger ). The sticker on the base says you can charge it (mains or wind up) witho ut putting any batteries in and it will run for approx 4 hours from a mains charge (doesn't say how long the charge has to be). Or, you can put in 3 x AA Alkaline or equivalent and switch it to ON and run it from them.
Anybody know what the spec of the charger might be? It has an input socket that looks very similar to that that was used on ancient Nokia phobile moa ns. I suspect it will cope with a fiarly basic PSU and has some current li miting circuitry within it's base.
Any one know if the above is true or false?