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Took my 8ah 10s lipos out today for a ride as extra range. I use a PF triangle battery and these in a rear rack top bag. Only used one lipo to 37.4v and got 25 miles range, didn't need the second so it is on a slow discharge. Used approx. 6ah down to 37.4v so wh usage was about 8.64wh per mile...

The TSDZ's have a start up sequence that affects the initialising of the torque sensor if not done correctly the torque drive plays up. When switching the bike on DO NOT touch or rotate the pedals/cranks until initialising programme has finished, it should be in the users manual somewhere. Or...

Flexible 24awg 3.5a rating is what you need. https://www.ebay.co.uk/itm/Hot-Flexible-2-3-4-5-6-cores-Cable-Points-Signal-Small-Power-Data-AUTO-CAR-Wire/351211405229?hash=item51c5d4bfad:m:mpX0y_4kO3BUDXGwdwNvSEQ:rk:7:pf:0

If it is D/D hub then yes 46 is correct, D/D hubs are gearless so. 46 is the standard P1 setting. P1 relates to hub gear ration and magnets inside a geared hub, the multiplied figure helps to set the odo speed correctly though can be adjusted manually to try and get it a bit more accurate.

The wording is ' points will be added to any future license when applied for '.

Can't help with offering a controller/lcd but have a look at KT dual voltage range, 15 or 17a one sounds ideal for your needs and are truly dual voltage 36/48. Doubt you will find smaller...

Which make of controller / LCD are you using.

The genius bit is the simple bit I like, using a pair of stock bikes to make up a quad bike albeit with an added inner welded frame. We take it for granted having a pair of eyes, arms and legs in working order, those that deal and live with out are heroic a word that is often over used in...

48v may be a little too much for these lightweight unless you use a max 12a rated controller, safer with 36v 15a. Lightest Q is 1.2kg so 48v will kill it quite quickly.

A very generous helping hand for someone to have a bit more freedom. inverted brake levers don't do it for me though, seems a lot more effort is required opposed to pulling on them.

Going back to #1 we are looking at 48v, ideally you will want to match the batteyr as mentioned to the max controller ramp draw. For a cheap bms this one on ebay should be with you in a few days but has no switch wiring so you would have to do without, 51mm x 69mm. Also no soldered tails...

The charger led is a dual colour one, I have four 2a chargers and they all are like it. Did you look at the BMS charging mosfet I mentioned as it will be the cause of charging not taking place if it is damaged.

Wisper have a new expensive range emtb's coming out but using Shimano E6000 drive.

Although the pic isn't very sharp enlarged, looking at pic BMS1 in #31 bottom right is the CH charge V-. In appearance it looks as if the solder joint is slightly blackened at the wiring and also the Mosfet up and right marked rfr3607 looks to have a damaged /holed casing on the lhs, though this...

When I fault find a battery after the bms check I strip the battery pack bare and remove all heat shrinking etc and check all the cell ends. I look for discoloured busbar tabs on both parallel and series connection to see if there is a weak link, also using a thin wooden pointed dowel I try and...

The charger led is the same led it changes colour green /red/green depending on whether current is flowing or not. Green when only charger switched on at the mains is no current passing but ready. Green when charger & battery are connected is charging finished no current applied, at this point...

Group readings are all good though a little unbalanced. Plug the bms jst back in to see if it will switch on and allow charging, sometimes this can work. We know from your reading that discharge also shows 48.7v which matches the cell readings, so most likely fault is with the bms as the jst...

:rolleyes:Should have said earlier, teaching granny to suck eggs and all that :p.

Charger light only shows red when it is charging, so for what ever reason the bms isn't switching on to allow current to flow so remains green . As previously mentioned could be a low or high cell reading.

it will have 52 or 65 cells depending on if they are 4 or 5 in parallel.