Although not specific to model railways, there was a report recently anbout the effect of leaving mobile phones plugged into charger over night and the possible damage it might cause, I presume to the phone.
Now like many I use rechargable devices, I find my electric drill very useful, until it runs out of charge half way through a job.
Just had it on charge. I think they recomment about 5 hours. It might have been slightly longer, but transformer part was very warm. Now I think many of these devices used to have cut outs so when battery charged it would stop trying to charge. I have a battery charger, a fast charger with lights to indicate when batteries charged, and a fan to cool it down. The other battery chargers I have, are slow ones which work better, and batteries keep charge longer, but there is nothing to indicate when it is charging and when battery is fully charged. That is a worry, and there have been stories about overheating electrical equipment.
Is it possible to have a reliable charging device which does it job well, and is totally safe, switching off when it has done its job.
Narrow gauge Francophile interested in 1m, 60cm,50cm , 40cm and smaller gauges . Build in scales from 1/6th to 1/24th. Also 1/32nd and 1/35th using 16.5mm track to represent 50cm and 60cm gauges. http://www.rue-d-etropal.com