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I just thought it was quicker & easier to change the front. Also cheaper. I liked the idea of going to single speed at the front, as once I had the motor, I was always in top chainring. It let me get rid of front mech + shifter, giving a better space for display on handlebars as well. (& I...

I have a 9 speed cassette at back and yes still using those gears, rear mech is a bit stretched forward on largest gear at back due to chain length, but doesn't seem to cause any issue and I don't really use it much in that gear. Bike has a 2009 SLX chainset & SRAM cassette & chain I think (not...

I converted an MTB with a 250w rear hub kit. I found the same & took all the original chainrings off, also the front mech, then added a 48t narrow/wide chainring off aliexpress with no guide or mech, and over last 600 miles or so has been ideal. Mostly flattish commute, but also rides round the...

I had a similar one from Yosepower that was 11.6Ah. It failed after one year after wear between the case & the cell wrapping (which really shouldn't have been able to contact each other). I think it was due to a combination of cramming in too many cells and an imperfect design.

Many thanks for the response. I think I will get this one ordered before stock disappears again.

Hi All, I am looking for a new battery after my previous one failed and wanted to ask for a little advice before I order. I have a MXUS XF08C rear wheel motor & am considering a 36V 15Ah battery with Samsung INR21700-50E cells in 3P10S arrangement. The advert suggests a continuous discharge of...

I didn't end up getting anywhere with Yosepower, after offering a discount they ended up deciding to ignore me & have not advised whether the same design problem has been resolved in their newer batteries, so will not purchase from them. I am now wondering if I could get a replacement on a cycle...

Well it looks like Yosepower have changed their mind and will not offer any discount, I have asked again, but doesn't look promising. Does anyone have any reccomendations on where is a good battery supplier for a replacement? I bought the kit from PSW power so could try there, but not sure where...

But then I think I would break the warranty sticker and lose any warranty on day 1. Even if I just opened to check the design was improved. Not sure which would be the best way to go. Blind faith and a warranty, or reassurance with no warranty? Opinions welcomed.

If I understand the question correctly, the answer is no. All of the thick wires from the BMS run down a different side of the battery where there is no damage to cells. This side has a fully enclosed 'groove' so no chance of the case grounding onto the cell surface. The other side had an open...

Hi WheeliePete, thanks for the feedback on battery choices above, very useful. I may well have to stay with the bottle version due to space, but will spend a bit of time measuring up to confirm. Yes I have sent photos & an explanation. TBH they didn't seem overly interested, just said cannot...

So I have had a response and they won't replace, as out of the 18month warranty, but have suggested a discount on a new one. Not sure how much yet, I need to choose one & I think they will let me know. So I have looked at the website, my current battery is 36v 11.6Ah. The one I had was already...

Just less than 2 years, but only had an 18 month warranty. I will contact Yosepower & see if there is anything can be done, but not sure if I will get anywhere.

Thanks for the input. So is the general opinion that this beyond help, and not even worth replacing the cells. So it's a new battery? If so would anybody be able to recommend where to get a new one? This was £170 at yosepower.

It is where the slots run inside the case and stop the internals rotating.

I guess it is the source of the spark when I opened it. But looking inside the case, there are corresponding scorch marks which suggest it has happened when it was in place, not when I took apart. I can't see how this has happened, unless it is from vibration over time or impact. I am now going...

I was trying to track the balance wires back to the cells and saw this......

Can you see the photo ok?

So I tested each group against black, but was seeing the cumulative voltage of the group's I think. Results as per the photo. Does it show 2 group's with issues?