Swytch mark 2 battery rebuild

[rig the jig]

I think on reflection, I would like to fit a good quality 10 A.H. pannier battery fitted to the rear carrier, remove completely the swytch kit, and fit a display to the controller, on the handlebars and a throttle, change the controller to one that can support the motor, display, PAS and throttle. I don't mind fitting the battery to the down tube as long as the endurance is 10 A.H. which ever option is best.

 

[Nealh]

9 pins is a hall sensored motor .

 

[rig the jig]

9 pins is a hall sensored motor .

Thank you for that info.

 

[rig the jig]

Can anyone recommend a good quality controller to run the hall sensor 36V wheel

 

[Nealh]

Yes a dual voltage 36/48v KT with a comaptible display, best place to buy is topbike kit , their aliexp store or other sellers on there. One can look at the 6 mosfet 15, 17 or 20a ones or as I prefer the slightly larger 9 mosfet 22a controllers. One can if need be reduce the max current via the display & C5 setting.

One can select wp connectors or the SM block type which makes fault finding a doddle. One can fault find with wp connectors though you have to make bespoke Y leads to do so.

 

[StuartsProjects]

Yes a dual voltage 36/48v KT with a comaptible display, best place to buy is topbike kit , their aliexp store or other sellers on there.

I bought a conversion kit from TopBikeKit for my lightweight Brompton uses a KT controller and LCD4 display.

The motor wheel from my Swytch kit is directly interchangeable with the motor wheel from TopBikeKit.

 

[thelarkbox]

One can select wp connectors or the SM block type which makes fault finding a doddle. One can fault find with wp connectors though you have to make bespoke Y leads to do so.

fwiw the snipped off leg of a resistor or capacitor can be used to probe the female sockets of WP julet connectors. and female dupont jumper wire terminators can fit over the male prongs in plugs but may need LIGHT finger pressure to maintain contact but not too much as to bend pins.

 

[rig the jig]

Great stuff, thanks for all the good info,I now know what controller to buy thanks to you guys, next the battery, I think a 10 A.H, good quality downtube battery would be best for me, any recommendations ?? I was looking at this item Silver Fish Ebike Battery 36V 10Ah 15Ah 24V 15Ah 17.5Ah 18650 36V Battery Pack for Bafang 500W 350W 250W 180W Electric Bike on Aliexpress but I just don't know what quality it is .

 

[Nealh]

One can buy silver fish on ebay , I doubt prices will differ much.
Aliexp dosen't add vat unti final checkout then one sees the true price inc the delivery, some sellers may have the cells etc in the specs if you scroll down the page .
Generally they will be capabale mediocre cells that will do the job, Samsung, lg etc likely may be used unless china cells are stated.

Post a link to any battery for us to see.

 

[rig the jig]

This is the battery https://www.aliexpress.com/item/1005004209965815.html as you can see I'm not great on computers..

 

[saneagle]

This is the battery https://www.aliexpress.com/item/1005004209965815.html as you can see I'm not great on computers..

Silver fish seems to me to be a starnge choice. You need a special frame to fit it. It'll look terrible if you strap in on somehow. Why not get a downtube or rack battery?

 

[Nealh]

There is no info or specs at all that I could see, worth looking on ebay as well.
Typically as mentioned they are for special frames with the battery vertical behind the seat tube , typically freego bikes and some folders.

 

[rig the jig]

Will do

 

[rig the jig]

This battery looks to be best suited to the bike https://www.amazon.co.uk/Battery-Lithium-Downtube-Charger-Electric/dp/B09WR41CHZ/ref=sr_1_3?crid=3TGMPPXS9QW37&keywords

 

[dave-electric]

I have designed a solution to allow an external 36V battery to be fitted in place of a failed (or poor capacity) Swytch battery. It's a 3D printed housing for the controller and UI pad, which fits onto the handlebar connector. I sell it on eBay...

Pardon our interruption...

It replaces the bulky 'handbag' with a more compact solution, that securely presents the controls to the rider. Other than running wires to a new battery and the battery itself, all necessary parts are included...

 

[mta102]

Just got a kt controller with an lcd9 display to replace my Swytch Brompton kit. Using the Swytch motor. What's everyone using for the P1 setting on the controller? It is based on the number of magnets multiplied by the gear reduction ratio, and I have no idea of these parameters for the Swytch Brompton motor. Please help? .