Yup, I do have quite a few which I use for my cameras, flash, flashlights, GPS, etc.
I also had this Lightning 4000 charger by Ripvan which I ordered in US. it was the most compact and reliable charger I had. unfortunately, it gave up earlier this year after 5 years of service. I think it fell on the floor and it was fatal.
To replace it..I again ordered the best charger I think is available..Lacrosse Technology...Its quite cool. You can vary the charging rates from 200 to 1000mah. Very smart charger..Uncool thing is its quite bulky compared to the Lightning 4000.