Maisheng MP3040D Professional 0-30v 0-40a Adjustable Power Supply
These are all brand new in the original box. Comes with the 110v power supply cable.
There are power connections with ring terminals on the back of this unit as you can see in the 2nd photo. If you are going to use this for 11-40a you want to use the connections on the back. The connections on the front can be used up to 10a. This charger is built solid and can handle high current. It's one of the most powerful 110v chargers for batteries up to 30v.
This brand is very popular in battery labs. Our company has tried many different adjustable power supplies and this model has been the only one that lasts. We have been using this brand for years and never had one go bad.
Perfect for charging batteries up to 30v and up to 40a. You can adjust the voltage from 0-30v and the amps from 0-40a.