Swytch Pro/Max yellow battery connector secrets revealed?

saneagle

Esteemed Pedelecer
Oct 10, 2010
6,806
3,144
Telford
Hi all thinking about doing this on my wifes swytch max, with battery on the front, due to terrible range.
Based on what has been said, I need to have the standard battery fitted as well, or the outer ports dont do anything to the other controls, in effect fitting a second 36v battery and having both power the bike
Not correct. if you open the compartment, you can splice a battery connector into the wires going from the battery to the controller.
 

Cisco-man

Esteemed Pedelecer
Sep 27, 2023
297
72
Here’s what for me, was the final solution. A twin Schottky diode on the back of the swytch housing (nice and cool, and hidden pretty much). You can have any extra 36v battery attached, the normal swytch pack, or both together, with no fear of battery cross-feeding..
 

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Woosh

Trade Member
May 19, 2012
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nice work!
 

qwertyman900

Finding my (electric) wheels
Nov 17, 2024
10
0
Hi could you send me instructions on how to do this please ? is it necessary or could you just cable straight to battery ? (I've found the cable online) I'm not great at soldering etc, also no equipment for it, thank you, Ahh *edit I just realised this would be for multiple batteries ? in that case I'll just use cable , thanks
 

qwertyman900

Finding my (electric) wheels
Nov 17, 2024
10
0
Simplest way is with this adapter sold on ebay

It just plugs onto the outer spade connectors of the swytch battery plug.
great for the non-technical, but there are better ways if you can solder.
I think I've found that cable on 3 bay , seems a bit overpriced if it's the one for £28 + (£6) postage, I could just make my own , I would have bought if wasn't so expensive, thanks though , *edit , found all parts, could do for about about £14 in total , just need soldering iron, so yeah suppose not too bad a price and is made well and good idea and after ebay fees, but I think more like £25 with free postage be more reasonable and would prob sell more
 
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qwertyman900

Finding my (electric) wheels
Nov 17, 2024
10
0
"dual battery adapter" finds them from £27 including postage.

@Cisco-man At 7A it would shed 3.5W so could need a heatsink depending on your setup. If the bolt touches the diode case the nut carries battery +ve which shouldn't be a problem but I'd cover it. Very neat!
*edit , I found the same cable half length for £25 with post, so yeah reasonable , didn't realise first one was 2 meters, think is made by same person