Search found 109 matches

by m3vuv
Sep 21 2022 11:49am
Forum: EBike Troubleshooting
Topic: bearings or bent spindle?
Replies: 6
Views: 295

Re: bearings or bent spindle?

how come if thats the case this has only started happening the last few weeks?
by m3vuv
Sep 21 2022 1:56am
Forum: EBike Troubleshooting
Topic: bearings or bent spindle?
Replies: 6
Views: 295

Re: bearings or bent spindle?

the spokes are all mde myself with a thread roller and are ok,how would that cause the hub to look buckled?,its not a lot about 3mm side to side at the hub body as its rotated,it has only recently started doing this,also does anyone know the bearing part numbers so i can order replacements?.
by m3vuv
Sep 20 2022 6:53pm
Forum: Battery Technology
Topic: using repackr
Replies: 5
Views: 415

handy site for using secondhand cells for a battery pack build.

Hi all i found this handy when building my pack so thought i better share it,heres the web addy https://www.repackr.com/
by m3vuv
Sep 20 2022 6:50pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

glad you sorted it as i spent well over an hour+ inputting data for 120+ cells only to see half of it missing when i saved it,it pissed me off big time,handy site tho but i am not sure how the battery configurator on the site works!
by m3vuv
Sep 20 2022 5:27pm
Forum: EBike Troubleshooting
Topic: bearings or bent spindle?
Replies: 6
Views: 295

Re: bearings or bent spindle?

any answers folks?
by m3vuv
Sep 20 2022 5:22pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

first time i used it i spent over an hour inputting all the cell capacities then when i saved it most of the cells were missing from the list maybe a bug so best grab a screen shot just in case!.they should do an offline version imho!,regards Paul m3-vuv 73.
by m3vuv
Sep 20 2022 4:03pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

you enter each cells capacity and tell it the series and paralell groups and it tels you what cells to put in each groupe to match the groupe capacitys,shame it doesent do the same with ir tho!.
by m3vuv
Sep 20 2022 2:54pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

its this.i spelt it wrong.https://www.repackr.com/
by m3vuv
Sep 20 2022 8:11am
Forum: EBike Troubleshooting
Topic: bearings or bent spindle?
Replies: 6
Views: 295

bearings or bent spindle?

Hi all,i have a generic direct drive 1kw chineese hub motor in my bike,if i turn the wheel when looking at the wheel end on the hub,ie motor wobbles,its like looking at a warped brake disk end on as its rotated,would worn wheel bearings cause this or a bent axle(although the axle if fixed and non ro...
by m3vuv
Sep 16 2022 5:10am
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

here it is now,looks ok to me?
by m3vuv
Sep 16 2022 4:39am
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

its the 13s 40amp of this model.https://www.ebay.co.uk/itm/313332095639?hash=item48f40c5a97:g:Xu4AAOSweR9fzJ41&amdata=enc%3AAQAHAAAA4Mo7%2FLy%2BN2kDq9IqPpGAe1Dv%2BlcIZ1SkxXtGZaX18N%2BsXDyXFLvxtv8sgHB1Mp29EzNauR%2BBdUYlbFURZVzjRZRUk9hD%2FJdxusX2Tr%2FTWjpSIXhoF479YEwZkES9SAo64ibUaQkeIPM7CeNN0tmQDv...
by m3vuv
Sep 15 2022 3:05pm
Forum: Items Wanted
Topic: lowish wattage controller with regen
Replies: 2
Views: 323

Re: lowish wattage controller with regen

its for my ebike and 13s 48v.
by m3vuv
Sep 15 2022 9:47am
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

i was just going to test the cells in the lower groups.may go for a 2 or 3 mile ride and look at the ballace then.
by m3vuv
Sep 14 2022 7:27pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

dont know if it matters but used bike to pop to the shops,about half a mile run then stuck it back on charge.
by m3vuv
Sep 14 2022 2:44pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

the 15q samsung cells were brought for a powerwall project that got cancelled,the others were from a pack that had bad cells due to having a bad bms draining them down,those are 2500mah samsung inr18650s 9wh cells,the i may be a one its not clear with my old eyes lol,they came out of a new old stock...
by m3vuv
Sep 14 2022 12:37pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

firstly it wasnt the cost why i built the pack using a mix of cells,it was a rush job due to having my 18s pack go up in flames due to no bms and a bad charger,its my only transport so had to use what i had on hand so i had transport,when my litakalla li 500 gets here i will tear the pack apart,i ex...
by m3vuv
Sep 13 2022 4:21pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

seems to be going off topic.
by m3vuv
Sep 12 2022 4:53pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

when building the pack,first all cells were tested and marked for capacity and ir,then the data fed into reakkr program to match the groups,the ir of the cells were pretty much the same,they were cells brought for a power wall roject that got cancelled,just too clear things up.this is the site i use...
by m3vuv
Sep 12 2022 2:15pm
Forum: Battery Technology
Topic: Louis R fire with UPP
Replies: 12
Views: 943

Re: Louis R fire with UPP

agree about having a smart bms,built a 20ah 18s pack with samsung 2500mah cells,was charging it using a 10s charger in series with my homemade lab psu,used it like that for about 6 months with no bms without issues,then brought a proper 18s evergreen charger from ali express,had it on charge outside...
by m3vuv
Sep 12 2022 2:04pm
Forum: Battery Technology
Topic: Buying a new battery: your advice sought
Replies: 75
Views: 1733

Re: Buying a new battery: your advice sought

that shrink wrapped pack reminds me of one i got from ebaywas listed as 32ah 3p 13s using 18650 cells,was total b.s in reality more like 5ah,how can they get 32ah with a 3p 18650 pack,in short they cant they just lie!!,the battery lasted about 2 weeks before cells started to fail,when i opened it no...
by m3vuv
Sep 12 2022 1:39pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

incidentaly when the charger is cycling on( red off green) say on for 2 seconds then off 2 seconds than back on for 2 seconds i assume its trying to balance the cells?,if so i wonder if i should leave it on charge for a few days?
by m3vuv
Sep 12 2022 1:33pm
Forum: Battery Technology
Topic: one cell group wont fully charge
Replies: 79
Views: 1398

Re: one cell group wont fully charge

I will wait until my litokalla lii500 gets here then pull the pack remove the cells on the iffy groups and test them,i have a 150 watt electronic load to discharge them,i want to open the pack anyway to fit the wires for a uart interface i have,the case is made of 2mm folded steel held together with...
by m3vuv
Sep 12 2022 5:51am
Forum: EBike Troubleshooting
Topic: Battery early discharge cuttoff.
Replies: 23
Views: 842

Re: Battery early discharge cuttoff.

just a warning about elcheapo multimeters,i found if the dmm battery is low the readings are well low,by upto 10x low can be lethal,i use an old avo8 mk9 or my fluke 83v,at least the readings are reliable!.
by m3vuv
Sep 12 2022 5:10am
Forum: EBike Troubleshooting
Topic: Ebikeling S830 PAS System only works pedaling backwards
Replies: 20
Views: 826

Re: Ebikeling S830 PAS System only works pedaling backwards

on my first ebike,i got pissed off about having to turn the pedals so extended the sensor wires and fitted the magnetic disk to the front wheel hub with the sensor jubily clipped to tha fork leg,worked a treat,then thust used the brake lever switches to cut power,didnt see the point in having an ebi...
by m3vuv
Sep 12 2022 4:35am
Forum: Technical Reference Area
Topic: 70V-ish PSU advice
Replies: 6
Views: 675

Re: 70V-ish PSU advice

most 36v chargers,eg10s normaly output 42v,ive used 2x 36v chargers in series a few times to charge a 20s pack.