This is DIY Ebike charger from 600W 60V/10A power-supply or even up to 100V if needed.
Cheap and very powerful. Works great!
It's Suitable for:
13S(48V nominal) and 14S(52V nominal) 18650 Lithium battery packs or higher voltage (Depending of power supply you choosed).

Here is Parts list:

3D printer(any kind) to print Power-supply housing(case) 100% infill

60V power-supply(adjustable voltage from 0-60V) -- https://s.click.aliexpress.com/e/_DdiP2Tx
Voltage(or amp) meter -- https://s.click.aliexpress.com/e/_AAKS0L
14Awg Silicon wire -- https://goo.gl/Vm6gfa
110V/220V 10A power-cord cable(PC kind) -- https://s.click.aliexpress.com/e/_9fatfz
2 pair XT60 conectors(2 male+2 female) -- https://s.click.aliexpress.com/e/_A4VuDl
Cable housing -- https://s.click.aliexpress.com/e/_A1kNbd
6pcs 40mm Heatsink -- https://s.click.aliexpress.com/e/_DEr0xjf
XLR male/ female plug -- https://goo.gl/7ibc6y
On/Off switch -- https://goo.gl/yLfshp
Power cord socket -- https://goo.gl/DxcRwH
rubber leg pads -- https://goo.gl/yBjvHt
4 screws

Tools:
Common sense
Solder iron
Heat-shrink or Electrical tape
Screw-driver
Blade/skalper

Heat-sinks is must to install on places like on the photos. They are exactly on the spots where the mosfets are(most heat). Without them these cheap Power-supply's will not last a week at 100% load. My first one without heat-sinks burnout in just few days. One of the heat-sink has to be cut in half to fit nicely on the top of power-supply.

P.S. You could use two or more of these power-supply's in parallel configuration of you need more power(20+Amps).

Use with the combination of Watt meter to monitor Volts,Amps,watt,Amp hours etc -- https://goo.gl/m5UqME