Hello Pc light,
Thanks for checking that out.
The difference is that the charger has circuits to limit the voltage to about 1.55 volts per cell, and it has a timer that shuts the charge off after 10 hours and then switch to trickle charge.
When using a power supply you don't have those safeguards so you need to manually set the limits and time the charge.
Tom
Hello Saladsack,
That charger will work fine.
Tom