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All of the charge meters I have come across have bare wires to which you add your connectors of choice.

The 2.4Ahr, 10S 2P pack I have is wired the same, it measures 39v.

Maybe if the battery goes out of balance the 'controller' senses that and somehow uses the central connector to flag an error to the charger or tool, which stops the battery being used or charged. The key is to look at a charger, is it able to read a signal put out on the top leaf of the...

Checking cable routing I needed to be sure the cables for display, brake and motor can be routed to the bag. On a non-folding bike this is not normally an issue, but on the Brompton the cables need to be routed in such a way that the rear wheel can fold underneath and the steering tube can fold...

It appears the 6.0Ahr batteries are diferent, someone is selling the battery packs themselves with this claim "Our Bosch battery Pack comes with an original 36V 6,0Ah Electronic components"...

Unliklely; I dont often go out when its very wet. The holes are tightened up quite a bit. I have one of those elasticated covers if needed as well.

Moving the battery and controller bag To get the electrics working and test that the choice of batteries performed as required, I had used a temporary housing for the battery, controller and miscellaneous cables. This bag was handlebar mounted facing rearward. Unfortunately this position means...

This is a 2.6Ahr battery, I guess its possible the others are different ?

Sure, nowt found.

The wiring of the central connector suggests its for detecting when the battery is plugged in and not for sending a temperature warning to the tool. From the picture below you can see that the bottom leaf of the central connector is connected to the -ve battery connector at the bottom of the...

No cutout in this 2.6Ahr battery, the +ve and -ve from the cell bank goes straight to the external battery terminals. Fuse is labeled 1 607 502 093.

My duff Bosch battery arrived this morning, I bought it for around £10 to check stuff. The battery and two mounting plates I found are shown below. The black one is just for storing the battery on a wall etc. its nice and thick and has countersunk mount holes, £3.50 on ebay. The red one, £9...

£716 on Aliexpress + DIY conversion, so probably cheaper than paying a bunch of criminals for a boat trip. No wheels, so it would need to be a bottom bracket conversion.

Whether we as individuals think extra regulation is good, bad or just a waste of time is of little consequence, we are not the politicians and legislators who make these decisions. The safety report does mention the issues around DIY conversions and there has been publicity on conversions used...

Well, there have been a number of so called battery fires that could have had more serious consequnces, in particular the ones in blocks of flats. If there were a serious event, multiple fatalties perhaps, then 'something must be done' mode could kick in and the mentioned report could well be...

Mostly different to what ? Where is that controller from ?

One of the reasons for the lack of detail on such incidents is reported in the "esf_batterybreakdown_report_2023_v7_-final" report, which is well worth a read; https://www.electricalsafetyfirst.org.uk/media/sgyikuwb/esf_batterybreakdown_report_2023_v7_-final.pdf "The Incident Recording System...

Is the BMS working OK ?

Interesting that one cell bank is down to 0V but the BMS seems to assume nothing is wrong.