Pedant peddler

366 to 1?

Biggest possible issue as already noted is the low current supply (though I'm still planning to fit 6v lights to my TSDZ2).

I'm with you on fitted and wired lights. Wife's KTM eStreet has fitted lights and it's much nicer hitting a button on the controller to switch both on rather than my bike which has separate rechargeable lights.

Are your Tsdz2 units running stock firmware?

Yes, running at 48v reduces the current. The only benefit I am aware of for the 36v unit is it is capable of supplying power at a higher cadence than the 48v unit when using it with the open source firmware(huge thread on endless sphere). If you have no intention of flashing the firmware then it's ultimately personal choice (though the 36v unit can be flashed to run with 48v).

I'm certain someone here will confirm soon though my guess is you'll have to strip 10mm of cable and poke it through the hole before pushing the terminal in or trapping the cable somehow. Not great if you're exposing it to rain.

They don't look like male spades to me. Are they springy? Possibly designed to accept and clamp a bare cable? No instructions with the light?

IIRC the TSDZ2 lighting cable is terminated with female spade connectors. What connection is on the AXA?

I'm wary of such though living in Scotland I feel it's possibly better to let water escape, stopping it from getting there in the first place is damn near impossible (as my everything from this mornings ride will attest).

I don't need a huge range though I have an abundance of XT60s so will make an adapter to allow use of both batteries if I need greater range (yes the 40 cells will be split between two batteries).

Looking forward to seeing this finished. I swapped the bullets for these XT60s... https://www.amazon.co.uk/gp/product/B07C3R5W31/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1 Now awaiting the 40 Samsung 35E I've ordered from Fogstar to build two batteries (son's Oset 20 getting a Lithium upgrade).

It may be worth buying a meter, Amazon (prime)£7.99 - https://www.amazon.co.uk/Mercury-600-101UK-Handheld-Multitester-Multimeter/dp/B00LEHK23I/ref=asc_df_B00LEHK23I/?tag=googshopuk-21&linkCode=df0&hvadid=231965104222&hvpos=&hvnetw=g&hvrand=904304744606292708&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=1007341&hvtargid=pla-423183568457&psc=1&th=1&psc=1 Or Screwfix.com £9.99 https://www.screwfix.com/p/lap-mas830b-digital-multimeter-600v/75337?tc=JB3&ds_kid=92700055262507126&gclsrc=aw.ds&ds_rl=1244066&gclid=Cj0KCQjw0YD4BRD2ARIsAHwmKVnLhkM012SBJkwUrTxqobCgI40kEghDJgSTXTQt8rdk-OdB5FX4KyMaAnbSEALw_wcB either would be suitable. The charger you linked appears suitable. More expensive chargers are likely to be more reliable though not necessarily any better at charging. I have the same battery and charger, happy to assist if I can.

Hairon linked in post #14... Note: Please turn on the power switch when you charging this battery pack.

Apologies if I missed it though you are aware the battery has to be switched on to enable charging?

My recently received (PSWpower) TSDZ2 came with bullets on the motor. The safest bet is to confirm with whichever seller you're planning to buy from. I've since swapped to XT60 as bullets are horrible(IMO).