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It seems to be a Hailong G56, available on AliExpress from a variety of sellers in both complete battery and empty case forms. At around 9.3cm in height it’s around 1.5cm shorter than my Hailong with integrated controller. Maybe I’ll make a little cardboard template and try it in some local...

This battery case looks interesting - it might open up conversion possibilities for some other FS machines. Do you have details & vendor for it?

I have a disability that limits how much energy I can spend. Converting an old hardtail MTB I got cheap off of gumtree with a cheap geared hub motor cost me well under 1k including a quality battery and has been amazing for me the last two and a half years. As soon as I did it I wished I had...

I've been looking around for options on 27.5, full sus donor bikes for TSDZ2/BBS02 and this seems to be the only game in town? There are lots of lovely used full sus bikes around my area but they all seem to have either insufficient triangle space or an awkward bottom bracket that would require...

Thanks Neal that’s good to hear, sounds like I don’t have to be super careful with it on the trails. I’ve tightened a couple of loose spokes so it should be good as long as I keep an eye on things. I’ll steer clear of the jumps though, maybe I’ll get a chance to rent a full sus emtb at some...

It’s coming up for a year since I converted an old Polish hardtail off Gumtree using a geared rear hub (Q128) and frame battery. The bike has performed extremely well on the road as well as on gravel and has gotten my CFS/ME-wracked body out and about many times when otherwise it wouldn’t have...

Just a quick update in case anyone else has a similar problem: it was the wiring (the big chunky main cable that ends in the various connectors for the brakes, display etc). I ordered a new controller and wiring but the wiring alone was enough to fix it so the old controller is still in place...

I’ve not replied in a while as I’ve not been able to get my head round the results I’ve gotten. The colours on the spare JULET cable I have are different but I used the multimeter to identify which colours go the which pins and referred to the below diagram. Twisting the cable attached to the...

Excellent: I’ll test that later when I’m home.

There’s no way for me to measure voltage with an actual LCD in place: the controller integrates with the battery mount so I can’t get in there with the battery plugged in. If I strip the LCD’s wire I won’t be able to reattach the Julet socket, my skills are very rudimentary. Im measuring the...

I’ve done a little more testing. I couldn’t see how to get at the wires in the controller with the multimeter without desoldering them so I’ve just left that. I used a stripped JULET cable in place of the LCD to test the voltage reaching the lcd and found it to be over 52V. Wondering if...

I must have misremembered - no glue!

I tried it with an LED I had lying around and it also complained of low power on a full battery...?

Looks to me like water has gotten in through the holes as it inevitably would given that the design leaves the controller exposed underneath the battery.

http://www.topbikekit.com/kt-36v48v-9mosfets-sine-wave-controller-for-10s13s14s-big-hailong-case-65pcs-cells-p-712.html This is the controller, though I seem to recall the nine chips (they are the mosfets right?) being submersed in glue stuff from when I received it.

Ah thanks, I don’t have that cable. I wonder if it may be best just to order a new controller rather than mess about trying to diagnose it. Though I guess if I’m thinking to replace it anyway there’s no harm in opening the controller up to take a look directly. Its the controller that...

That’s interesting. I just raked around in the garage and found the screenless LCD I had kicking about - it also powers up but the low power light flashes. I also got the motor to work this time (it has worked a few times when the battery is freshly charged but it soon gives out) and with the...

I’ve been running my self build for a few months now with no problems and no sign of loss of battery range. Its an old mtb with a CST rear hub motor, KT 9 Mosfets controller from TopBikeKit, Hailong battery from Eclipse and a KT LCD3 Display. A couple of weeks ago the display started going...

Ok so I got the LCD3 and fixed the PAS and top speed issues. It turns out both were down to the P1 parameter being way, way off resulting in the controller thinking the bike was going much faster than it was. No need to change any PAS settings. The downside is that removing the LCD3 and...