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I'm saddened to hear that you are below par @saneagle -its a bummer not being 21 anymore - I wish you a speedy recovery.

Yes, a very useful summary of your comparison thankyou (and I read your original review a few weeks back too). Now, cards on the table: I absolutely do not have the depth and breadth of your bike/ebike experience and apart from a brief period of ownership of my wife's hub motor (which I...

@Bogmonster666 already got one of those on his 'crapbike') right name? And wants to give a hub a go and I'm looking forward to hearing his comparison with the tsdz2.

If you happen to live in Hampshire or West sussex, the Queen Elizabeth Country Park is hosting a Cyclefest on Sat 6th July (LINK) where there will be vendors with all sorts of ebikes to try out.

What is your cycling experience to date? I ask this as different ebike motor systems offer different methods of delivering their power and if say you were previously a cycling 'enthusiast' then a hub motor with a 'cadence assist' system may not suit your riding style as much as a 'torque...

Yes I have, from people I've met who have lost their batteries to theft (not anecdotal - it was their batteries not a third party story). Maybe only two or three direct reports over the past couple of years. The bigger point though is the visual presence of the battery (Hailong in this case)...

+1 for that approach - I couldn't agree with you more. Those hecking great Hailong battery cases just shout "ebike, come and get me".

As far as I understand it, lithium battery chargers have two distinct charging phases: Constant Current and Constant Voltage (CC/CV) with CC first then CV. Exactly what determines the changeover from one to the other is not something I've looked into but I'm thinking that with two such chargers...

Fair enough that you should be alive to the possibilty (of overheating the cells) but as Neal says, this isn't really unlikely if using a spot welder for lithium batteries. Like Neal I avoid the centre and given that you're joining at least two cells together I do a weld on one cell and then...

There is no magic solution to finding a comfortable saddle as us humans have very different butts between us. I have for many years just ridden unsprung Brooks leather saddles and on day rides just ordinary shorts at times and no issues. Others cringe at the notion of such a 'perch' and you read...

Measure between either '+' and either '-' as the two '+' are connected together internally as are the '-'.

With the addition of a few cheap components you could extend your load resistor project to give you more battery information to help you understand the performance of your battery and what range each of them is likely to give you under different riding conditions. Below is the schematic of my...

Be Much Safer BMS - but it is very unclear and unsafe to blame the BMS - I still have the old one which I could take a closer look at maybe?

Thanks @matthewslack and @Nealh for your input. Interesting that you mention a possible BMS issue Neal - I was on holiday in France at the time of the failure and with no tools for a strip down, I ordered a replacement BMS (a BeMuchSafer one) as a precautionary measure and have in fact fitted it...

Thanks to invaluable input from forum members I now build my own battery packs My oldest pack, 15 months old (a 10s 2p using LG M50LT, 21700, 5000mAh) has been brilliant and has done maybe 60 full charge/discharge cycles? Imagine then my suprise when one day recently that it didn't power up A...

Ah, thanks for that @soundwave - unlike you I'm clueless about the Bosch systems but now I know that the Powertube 625 comes in a 'smart' version and a non-smart version Know anyone who wants to buy a non-smart Powertube 625?

Sorry, which battery has the 'smart' connection, the Trek varient or the 'Standard' one?

Did you periodically charge the battery at all over winter? If not and the battery went flat and given it's 4 years old, then your battery may have been weakened such that is can deliver enough power for low levels of assist but when you ask for more power, the battery can't cope. Again, these...

A friend has a Trek eMTB and he decided to buy a 2nd battery, a Powertube 625 (£600 - eek!) Anyway, imagine his dissapointment to find that whilst the batteries intially looked the same, the connector plates at the base of the batteries were a different shape and had different connector pin...

Ha ha, this thread has all the potential to rattle on like the ones you see on car forums for 'what oil should I use'?.