I think what science toolbar wish to say is: if the magnetic flux generated by the neodymyum sphere can charge the coil,enough to light a bulb this means it can charge unconventional materials....
But the small generator you’ve built isn’t charging the coil– changing the number or arrangement of charged particles – it’s inducing a current in it. That’s what electric generators fundamentally do – convert mechanical work into electric current.
In science and engineering, it’s important to use terms like “charge” and “current” correctly.
small generator lighting 7 W led bulb 230 V E 27
Cool video, though I think some spoken explanation would improve it. Cool gadget, in any case.
As others have noted, the output of your direct current motor-driven generator (lacking as it appears to brushes or electronic switches) is likely an alternating current, and if it’s making the commercial LED lamps you’re using glow as brightly as they do when connected to a 230 or 110 Volt AC power supply (it’s hard to judge lamp brightness by eye, even harder watching a video of a lamp on a computer screen), must be producing a similar voltage. The LED lamp has some pretty complicated electronics – in most cases, a miniaturized SMPS
– built into it that’s converting its AC input back into DC and, in most cases, lowering the voltage to around 3 V. There are some LED lamps on the market that use high-voltage LEDs to avoid the need for an SMPS, but they’ve proven less efficient – about 70% vs, 90%. (source: Electronics Weekly article “Why not direct AC drive your LED string?”
You’d get better performance, I think – a brighter light glowing longer before the battery is discharged - connecting your 4 V battery directly to an LED without the 110 AC to low voltage DC. You can get such LED’s from pretty much any LED flashlight, most of which are 4.5 V (from three 1.5 V batteries, eg: AA or AAA).
You could compare the efficiency of your setup to that of an LED flashlight timing how long your setup runs before draining its battery, vs. a flashlight. You could compare the lamp brightness using a photographers light meter, or, if like most people these days, you don’t have one, but have phone, a phone app that uses the phone’s built in camera.
While I’m pretty sure you setup is much less efficient than an LED flashlight’s, it would be interesting to see the results of such a test. It’s certainly much more visible, and fun, than a simple flashlight!