hi,guys

things you need

1-http://www.ebay.com/itm/RD-DPS5005-50V-5A-Adjustab...

2-http://www.ebay.com/itm/AC-85-245V-To-DC-24V-2A-3A...

choose 24v 5a

3-switch,some of wires,

Step 1:

make box

Step 2: Change Your 2power Supply Voltage

To change your 2power supply voltage you must change resister 10kohm to 12koh like in photo voltage will be 28.5v regulated

Step 3: Wires Connecting

Connect ac/in for 2 power supply and the output connect on series the voltage will be almost 55.8

that's will be input for DPS5005

Input voltage range: 6.00-55.00V

Output voltage range: 0V-50.00V

Output current: 0-5.000A

Output power range: 00.00-250.0W

Product Weight: about 113g

Product Dimension: 79*43*48(mm) (L*W*H) Open size: 71mm*39mm

Output voltage resolution: 0.01V

Output current resolution: 0.001A

Output Voltage accuracy: ± (0.5% + 1 digit)

Output Current accuracy: ± (0.5% + 2 digits)

Screen：color LCD

Charge the battery:Yes(but need a diode, it will be with module)

1. You must make sure that input voltage is 1.1 times higher than output voltage. 2. Under large curren circumstances, please pay attention to heat elimination. 3. When this product is used for charging a battery or connect a capacitive load, there must be a diode in series with the output-anode, otherwise the regulator will be damaged.