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Yer nice but 20-30 miles I can recommend watching more of his content, he knows his stuff about ebikes and covers almost every topic, from battery building to watts, volts and amps. Last time I looked he was a bit sketchy on torque arms commented to that effect.

Yep apologies I get it - I suppose I should practice what I preach about doing extensive research - So one would deduce, if your controller is dual mode(hall sensor and un-sensored) but your motor was hall sensored you would get a hall sensor error if the motor sensors fail as your motor is not...

The thread title first read to me, as you are "building your first battery"... What ever the kit says it is voltage wise in its spec is the battery you should be buying... I believe (not 100% sure) most BBS mid drive have an in built controller the battery would need to match the voltage that is...

It's a 9 pin anyway How come my square wave controller has a 9 Pin connector??

Some cheapo ridged bikes are steel frames, sneak a magnet into you local bike shop or ask a for a steel frame, HOWEVER as mentioned above two t-arms well secured would still be a must even if you do limit the speed. Or as you mentioned get a geared hub motor, better of the mark acceleration and...

It may be capable of a 1000W but not actually reach that amount, mine is 250W "rated" and is quiet happy at 600-700w for brief periods, maybe link the kit in your next post. The main way to check watts is via an LCD screen on the handlebar most have this function, what model LCD if any are you...

I don't know not much about mid drives, but a quick google indicates Bosch are mainly square, to understand sine or square it's best to do a little research yourself. You can use a sine or a square on a 9 pin motor... It's maybe a good idea to buy one of each controller types even if you can't...

If you are new to ebikes you'll not really notice any difference... I feel I get a smoother ride from sinewave and a mile or 2 better efficiency but that's highly speculative, it seems to hold more watts at continuous operating amps say 8a at 15(ish) mph compared with square wave IMO.

You'd still have to pay full stop...I don't know about customs duty ebay should add VAT and the actual price is under £135- P&p is a bargain o_O

in the OP's pic the red wires all alone which leads my to say Red signal, I never checked the ebay one apologies, yes I would concur.

Too true! Red looks like signal, as black would indicate ground and with yellow next to it, I guess that's positive.

Check with YOSE and see if they use the same battery housing(case) as your current 36v battery for their 48v model and if they do, you could use your dual voltage controller (my 14a was £35) and swap batteries out, that's what I do, I have all dolphin case batteries 2x 36v and 1x 48v, I can do a...

I don't think its anything to do with the battery, cell series or fets... It's simply the way the controller recognises a 36v battery or a 48v battery... If, on the rare occasion I happen not to fully charge my 48v and find my self hitting a steep hill of north Lincolnshire close to home at...

Which King meter is it?

Only time will tell... I assume they'd would either pay the costs involved or get the customer to pay- either way I suspect the customer will end up bike-less for 3-4 weeks maybe more - not good

I know that feeling all to well, I got a puncture to fix today on my front hub so am going to try and strip the suspension and clean that... Can't wait to get started lol. Are you running that on a 48v battery? I never tested the dual voltage aspect... If you are 48v don't forget when you get...

What amp KT controller did you go for? is it sinewave or square? I bet it's sweet now your KT'd up. I've got to rewire my entire setup when the warmth returns, strip the bike down replace a failing PAS that works when it feels like it and try and make a 2 year old bike that's done 4000+ miles...

All goods must apply 20% VAT now regardless of where they are shipped from, UK, EU, China etc marketplaces will take the VAT for the seller but "topbikekit.com" and "pswpower.com" and ANY non-marketplace from the EU or any other country (ie all company owned websites) will have to register for a...

I fear sellers don't seem to understand that items sold on ebay should be ok as long as the new customs details are filed correctly... Although I don't blame them, brexit and the VAT rules happening at the same time... I will order a new 1to4 cable and PAS sometime next month from Aliexpress if...

The sensor looks to be in the best position, I might be a good idea to buy some super strong magnets (do research not all mags are equal) in a long thin rectangle shape to align with your lever width. you may have to over hang the sensor.