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This doesn't prove anything. Only three pins are required for a direction detecting chip that internally incorporates a dual hall sensor. And that internal dual hall sensor is required for the logic inside to work so that the signal will be present only for one direction of rotation. It is not...

This does not show the lag between a thermal event at some point inside the pack and when that reflects in temperature at the surface. As per my simulation and what I saw online, there is a lag of minutes leaving too little time to act on an alarm. One needs multiple sensors inside the pack...

My point was that the temperature sensor has to be placed inside the pack. It may be be too late if you wait for the temperature on the outer surface of the pack enclosure to rise even by 10C.

Motivated by this (and the related thread) I too implemented an external temperature monitoring + alarm. But, being unsure how effective such a system would be, I did a quick and dirty simulation of heat transfer from the center of a battery pack to outside assuming one of the cells develop a...

"WMG suggests that the UK government, when developing legislation concerning the right of the consumer to repair a product, or to have it repaired by a third party, should consider restricting these rights when applied to PLEVs containing Lithiumion batteries. This restriction should also apply...

They go into such details in the body of the report and do, in particular, mention the suitability of mandating audible alarms in battery packs. Apparently some Chinese regulations already require them the China. "WMG suggests that OPSS investigate the feasibility and practicality of audible...

Apparently Swytch GO in the EU/UK version has something like this implemented in the controller firmware. The throttle works for start assist (speed < ~4mph) or if pedalling. Quoting from Swytch site: "in accordance with EAPC (Electric Assisted Pedal Cycles) legal regulations in the UK, European...

What kind of business are these? 44% do not dispose Li batteries properly and admit it openly in a survey!

Li battery fire in a leaf blower when not in use, not on charge At least this one can't be blamed on delveroo guys using out-of spec chargers, oversize motors and home made batteries. Its such a pity that after so many incidents of apparent spontaneous combustion, we still do not have any...

The blue thingy looks like an inductor for which you could find a replacement (labelling too blurry to be sure). Be careful not to short anything while soldering it.

iirc all pins are used: discharge is across 1-6 in your picture (not 2-5), and its activated only when 2-5 is shorted. That said, do not short anything without verifying the above as I'm writing from memory.

Looks like you are measuring the voltage on the charging port which wont work. It is isolated by the BMS and wont give you the battery voltage. You need to measure it across the discharge port, but, in case of MAX even that is activated only when the battery is mounted on the bracket. There is...

That's what I try to do, but find it hard to get the lever hook under the bead. I never a get a good hold under the bead without a lot of poking and pushing and damaging the rim tape at places. May be I need better tyre levers? I do try rolling the tyre to get the bead into the middle of the...

For me its removing the tyre that's a real challenge. Putting one on never that much -- never had to use tyre levers even with marathon plus which is a real pita. But not a single tyre have I removed without way to much frustration and almost breaking the levers. Surprisingly it seems most...

MAX is only 180Wh. OP getting only 15 km from it at PAS 3 to 5 in cold weather is not surprising. Put on more manual effort to keep it at PAS1 and only occasional higher assistance to get more range.

In the facebook group "Swytch Bike Chat" there is a member who has toured around in various countries on a "Swytched" Brompton and third-party/custom(?) batteries. You may get some tips if you ask there. I suspect he travels with multiple < 100Wh batteries which some airlines allow you to take...

The whole idea of moving to KT is the "tinkerability". If you want no tinkering, buy a manufactured ebike. That said, Swytch wheel + battery + PAS can be made to work with a KT controller and compatible display.

Winters here are very different from summers. Roads are slushy with snow and salted, and the thinking appears to be that salt and water leads to more chances of electrical shorts. Unfortunately whatever data is out there on battery fires is so incomplete and of poor quality to make any...

TTC bans e-bikes, e-scooters aboard vehicles during winter months On Tuesday, the TTC’s Board of Commissioners voted in favour of banning e-bikes and other micromobility devices which use lithium-ion batteries during winter months over the fire risk. The board made the move despite...

The state of data about ebike fires is so pathetic that its hard to make out what really causes fire. All that one hears about is charging, but there are several incidents of fire while riding. Then articles like this make the data even murkier. Referring to fire data apparently for 2022 , the...