Charged my Seiko Kinetic with a toothbrush charger

Little experiment here I did last night.

Going to my point,my six year old seiko kinetic is not gaining charge any more the way it used to be. No matter how I shake it or wear it to charge, it won't go for a full charge.

Last night, when I was brushing my teeth with my sonicare tootbrush, I thought of using the charger to charge my watch. I said, what the heck, my watch is 7 years old anyway and I put the watch on top of the toothbrush charger. I left it overnight and lo and behold this morning , it was at full charge. The only thing I noticed is that the watch is a bit warm and I thought it might have been overcharged. Up to now, the watch is in full charge. It would have been better if I had monitored the charging until it was full charge or used a timer to avoid overcharging.

Don't quote me on this because I don't know yet the possible cons of doing this but it does work.