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DIY 18 cell charger station for £30
#21
** UPDATE **

Finally got all the parts to start building the charge/discharge board, China post is not the quickest postal service to the UK Smile 


18mm MDF 600mm x 600mm laid-out and ready to drill & router


Drilled & Routed


Mock-up to check layout


Primed and ready for undercoat & top coat of paint.

I will post photos of the wiring up of the board once I have made a start it.
I will be powering it via an ATX PSU with a breakout board. The 5v rail has a max output of 18a and the 12v rail has a max output of 20a so will use a DC to DC buck converter on the 12v reducing it to the 5v needed to run the charger modules and the 5v rail will be for the discharge modules.
BlueSwordM and Korishan like this post
Probably going to blow myself up, but where's the fun if nothing ever went wrong !!!  Tongue Big Grin
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#22
*More Done*

All painted with hardware installed



 Just need to sort out the rat's nest Smile I see a soldering marathon on the horizon Tongue
Ibiza likes this post
Probably going to blow myself up, but where's the fun if nothing ever went wrong !!!  Tongue Big Grin
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#23
For you main power bus bars, make sure you do a loop with each power rail and use 14swg/awg to minimize voltage drops. The loop makes a huge difference. If you connect the rails to one or two of the reds/blacks, make sure the return line connects to a different set of reds/blacks. You want as much balance as possible.

Nice work, btw. Smile
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
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Certified 18650 Cell Reclamation Technician
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#24
(03-31-2018, 04:22 PM)Korishan Wrote: For you main power bus bars, make sure you do a loop with each power rail and use 14swg/awg to minimize voltage drops. The loop makes a huge difference. If you connect the rails to one or two of the reds/blacks, make sure the return line connects to a different set of reds/blacks. You want as much balance as possible.

Nice work, btw. Smile

Exactly what I had in mind, much like a domestic "ring main" here in the UK. 
I have some 14awg (1.5mm²) solid core cable here. I chose solid core as it will be easier to route and to solder to.
Korishan likes this post
Probably going to blow myself up, but where's the fun if nothing ever went wrong !!!  Tongue Big Grin
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