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Tips for DIY PSU for LiPo Chargers
#1
I will use this thread as a place for tips/links of cheap DIY Lipo chargers, feel free to ask questions and submit links/info too.

DIY Tutorials

Tips
  • Add fuses
Don't be a LOS'er, be a FPV'er :) -- My Fleet
#2
While a fuse won't do any harm, ATX PSUs have overcurrent protection - specifically any single rail can't output more than 240w (according to ATX specs), that is 20a on 12v. This is the reason why more powerful gaming units have to have more separate 12v rails available.

EDIT: afterthought: it actually may be a good idea to use a fuse IF your PSU has more rails AND you soldered them together into one line, because overcurrent protection will kick in only after reaching 40 or 60 amps, depending on number of 12v rails available.
Find me on Youtube and Instagram. I currently fly: NOX5, NOX5RAirblade Assault 130 and drive a scrap RC car
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#3
I made one of these a few years ago and I still use it, not as fancy as your's though.
Current quad: ZMR 250 / DYS SE2205 / Littlebee 20A ESCs / Drone Lab 1500 4S / Naze32 Rev5 / BF 2.7.1
FPV: Runcam Skyplus / Aomway 200mw VTX / Fatshark DomV1
>>>>>>>>>>Check Out My Build<<<<<<<<<<
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#4
On the 400W one, what is the switch for? i notice it's got the mains switch at the back.

Is it hooked up though the green and grey wire to power it up somehow?
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#5
(10-Oct-2016, 02:00 AM)mjcfpv Wrote: On the 400W one, what is the switch for? i notice it's got the mains switch at the back.

Is it hooked up though the green and grey wire to power it up somehow?

I can switch mains power on the back, but it will still stay in standby mode. Switch on front grounds green wire, activating the PSU.
Find me on Youtube and Instagram. I currently fly: NOX5, NOX5RAirblade Assault 130 and drive a scrap RC car
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#6
Question 
First of all, thanks for the great tutorial using the DPS-800 (https://oscarliang.com/cheap-lipo-charger-psu/). Smile

I bought this one: http://www.ebay.com/itm/112274380088 and followed the instructions (soldering the 2 jumper wires), but when I plug it in I get absolutely nothing. No green light, no fans, no voltage.

Is my PSU broken, or is the model different enough from the one in the example that I need different jumpers, or did I just do something wrong? Any ideas for things I can try? Sad

The contact portion of the board was bent on arrival (in shipping I'm guessing, it was just in a padded envelope) so I'm wondering if that killed it. I'll try to get a refund if nothing else works, but wanted to make sure it really is dead first.



Thanks!
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