Search results

Indications are that likely a cell group or more are out of balance, depending on how much the BMS might eventually realign them all. A BMS balances at a very low rate something like 100ma so any large imbalance would take along time. Once a cell group reaches 4.2v then the bms stops balancing...

Looks very good esp in Grahite Grey.

A little above 4.11v, so yes heading the right way.

For a touring nature I'm now a coverted 9 fet KT user either 22 or 25a model having experienced heat issues/ thermal cut outs with 6 fet ones on long rides of up to 160km. That said locally on flat terrain the 6 fet is ideal and have no issue with it on my commute/errand town bike with a...

You should be ok now.

Yep cam buckle would do the job, they are very versatile and they are cheap. I use them to tie my bee hives down and use them for securing stuff on my ebike CF trailer.

Any sag is too much but in truth all cells sag over 0.2 a current draw , just depends on how many in parallel and quality. My 13s 7p PF's show an average of 0.1v per cell with about 200w applied. If I apply more W's I can see nearly 2v sag temporary with my 25a controller whilst climbing in...

We were all noobs once, the last five years alone has seen a much greater choice of component parts/ kits etc,etc become more widely available. If you want legal rated, plug and play and 100% compatibility use a kit supplier like Woosh. If you are happy mixing and matching the go the China...

OK you have realigned the output voltage, It wasn't clear earlier you had done this as you mentioned faulty/loose MM cable. No reason then why bms shouldn't balance better then with correct input voltage, complete balance might not happen first time round and may take a couple of...

London Mayor/TFL were proposing to try and get these made legal for road use but will require DfT to make them legal in law or country wide use , not doubt regs will have to be applied but doubt if any will be acted on. Eventually something will give and they will become common place esp in...

https://www.fibreglassdirect.co.uk/fibreglass-grp-kits.html 1.Gel coat. 2. Matting,resin and hardner. 3. Top coat.

Probably grp is the way to K, though you need to make up a timber or styrofoam former to mould the grp on to. This means making it as a two piece enclosure with one side removable with plastic W buttons (I have plenty in black) a bit like the Swizzbee battery enclosure. To prevent the grp...

If the reading is correct then your battery has an unbalanced cell group if it does not balance /charge. Your only option is to open the pack check the 17 group voltages and manually balance the low cell group. If you have been short charging to a lower voltage purposely to extend cell life...

Woosh kits are everything needed inc battery with full UK warranty, for the novice it is perfect as spares are despatched next day. No quibbling, toing and froing that's why they have such a good rep on here and folks speak highly of them for their CS. There are other UK sellers but none come...

vfr has already provided a link in #34 for Q128C motor wheel.

3.2v is about the lowest most bms will go, no use in actually killing the cell out right. There is little in the way of mah to gain going lower.

I forgot about GBK in China they sell a silver 250w Q100c 36h cassette hub and are a very reliable seller, 201 or 328rpm and other 250w hubs all though 36v. https://www.greenbikekit.com/electric-motor-engine/rear-bldc/e-bike-cassette-freewheel-hub-motor-36v-250w-light-weight-high-speed.html

There's no effectively about it, it is marked above the 250w rating. The Akiema I have has 250w engraved label, tbh I don't think anyone would be able to prove it isn't. My feeling is that all 350w motors are the same as 250w ones , the bigger markets like the Yanks don't like 250w as they feel...

Woosh now have all there new motors 250w marked, the old BPM is 350w. The Yose hubs are etched on the side plate 350w, the Akiema Q128C is 500w the sticker fall off and the motor is small like the Yose.

4.2v per cell is fine for charging and using a battery , the damage occurs when you charge to 4.2v per cell and leave it sitting there for weeks and months on end. Like lipo use a storage charge 50 - 80% SOC when not being used regularly. Lion is a bit more tolerant then lipo and has wider...