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    Difficulty in dismantling ebike front hub motor

    This motor (Pictured) is giving me a heap of trouble trying to get it apart. The supplier BMS Battery has not answered my email and I have not been able to locate parts diagram. Has someone successfuly taken one of these apart ModelQ100 350w Thanks Peter
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    Does an MPPT solar controller have ripple in the output

    I have read LiFePo4 cells last longer if the charging current does not pulse ie the best charging current is a flat voltage rather than a pulsing current/voltage which may be better for lead acid batteries. Is there any truth to this and is there a better type of controller for these lithium...
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    Battery charging

    I have a 24v 5A dc supply which I have linked to a buck converter. The output of the buck converter is set to 13.4v and then connected to a 12v lead acid battery reading 12v-so the battery is a little low on charge. An ammeter between the buck converter and the battery reads 0.15A however...
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    Bigwei LIFEPO4 100Ah cells

    Does anyone have any experience with these cells? Available in Australia AT $A139 per cell-Chinese brand so perhaps not that good???
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    Using a buck converter to make a battery charger

    I have a 24v dc power supply and have been attempting to make a battery charger for a12v lead acid battery using the buck converter pictured here. I find that the potentiometer for current adjustment has no effect and want to know just how fragile these devices are. It should be easy enough to...
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    Looking for e bike enthusiast in Brisbane Qld

    I have been using ebikes for about 15 years and have replaced LiFePo4 cells in 36v packs and done other fairly simple fix up jobs such as replacing the bms. Now living in Brisbane after living in a provincial town in Qld (Maryborough) and hoping to meet up with like minded people who do some...
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    10w solar panel connected to lead acid battery

    I have a question about whether a 10w solar panel left connected to a typical car battery-about the size of a Toyota Camry would prolong the life of the battery or actually cause harm by overcharging. That is connected without a solar regulator direct to the battery. The solar panel has an...
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    Anderson plug irritation

    I am using 2 Anderson plugs as a substitute for main switch on my electric bike. When I go over a bump the bike sometimes loses power and pulling the plug out and re-inserting it fixes things until it happens again. Looking carefully at the plug I can see that the clip that sits under a lip on...
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    12v Battery out of 18650 cells

    I want to make a small battery out of 18650 cells with 3 groups of 6 cells joined in parallel then the 3 groups joined in series to give the amount of power and voltage that I want. I have been charging individual 18650s with a TP4056 board and mobile phone charger for the power supply. Is...
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    Electric bike has very stiff steering when in motion

    I have a 350w electric motor on my front wheel and when under power the bike becomes difficult to steer-more so when I go full throttle. If I reduce power the difficulty decreases-however even then the bike is difficult to steer-not nice to ride on With the bike at rest the front forks are...
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    New BMS fitted to a 12s LiFePo4 18650 ebike pack

    Immediately after I charge this pack there is a fairly wide variation in cell voltages-the highest being 3.7v and the lowest 3.3v. I then attach a load consisting of 3 only 12v car taillight bulbs in series drawing approx 2amps and I believe this takes off the surface charge and gives a more...
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    BMS on eBay

    I have had problems with BMS on my 12s LiFePo4 electric bike pack and I am looking at buying a bms with this eBay number ( 321048908605 ) The pack is driving a 350w motor so my arithmetic tells me watts divided by voltage equals amps so approximately 10amps is the theoretical figure for the...
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    Cheap effective BMS

    I have often used this forum to get info however perhaps now I can contribute something. I have had a lot of trouble with BMS for LiFePo4 12s- and finally decided some time ago to give a cheaper one a try.It has worked well on a 350w electric bike though that may be it's limit-not sure about...
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    Wiring up a BMS

    I have bought a 12S BMS LiFePo4 and it arrived without any clear instructions for wiring it up. A photo is attached. For some reason the balance connector is split into 2 parts an 8 pin socket and a 4 pin socket. Can someone help me with which cell relates to which pin? Also when wiring in...
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    Balancing LiFeP04 cells

    I have made up a 12v battery using Headway 38120 10A cells -a pack of 8 cells with 4 pairs of cells in parallel to make what a charger sees as a 4cell 12v nominal voltage battery. My idea was to have it as a General purpose 12v battery for camping and as an emergency starting battery for a 40...
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    Have built a 12v LiFePo4 battery

    I have made a 12v battery using 8 Headway cells configured as 4 parallel units of 2 done up in series to get the 12v. I also bought and installed a low voltage cutout to avoid over discharge. It is boxed up and works well however the 2 pairs closest to 12v+ are now lower than the other 2 pairs...
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    Buying LiFePo4 battery from China

    I have bought 2 only 36v 350W elec bike kits from BMS Battery in China (LiFePo4 type batty) approx 4 years ago-they have given reasonably good service however one battery is now giving trouble-the latest being a dead Headway cell within the battery. I have replaced both BMS's recently-at very...
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    No output from battery pack

    You will recall that I mentioned earlier that I have two 36v elec bikes. I bought one BMS recently and installed it-now the second bike appears to need a new BMS also. They are getting a bit old now(like me!) so it is not unexpected. On the first occasion a stray piece of wire entered the...
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    36v battery won't charge

    I have 2 electric bikes-both 36v Life po4 type so it is possible to troubleshoot by swapping components. They are used to get around a small farm-doing odd jobs. I carry pieces of wire attached to a box on the back of the bikes and unfortunately the end of a piece of wire found its way into the...
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    36v lithium battery pack

    I charged my battery pack on an electric bike and at the conclusion of the charge pushed the button provided on the pack to get a rough idea of how charged the pack was-nothing-a flat pack and the bike would not operate. I then put the charger back on and in a matter of a few minutes the...
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    Identifying battery pack for help

    I originally bought two 36V bicycle kits from China with the idea that parts would be interchangable and simple checks could be made if something went wrong. eg if the bike doesn't go change battery packs to make it go. It has all gone well for about 3 years-just minor problems with connections...
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    Battery pack 36v from BMS battery

    The above battery pack will not run the bike. I have 2 bikes-both 36v and have swapped batteries and confirmed that the battery pack is indeed the problem,When I measure the voltage of the pack it reads around 36v-when I put the charger on the pack it charges for a few seconds then cuts out (as...
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    Front wheel and handlebars rotate and damage wiring

    I have a 2 leg bike stand and when the bike is up on the stand the bike tilts to the rear(the battery is in a carrier above the rear wheel)-the rear of the bike now being the heavier part of the bike. This then leaves the front steering assembly including front electric hub motor mounted...
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    38120 cells for a 12v application

    I have a 7 amp hour lead acid gel cel battery which has a few uses: First when I go camping and boating it provides lighting etc Second-it provides the spark on a coil based ignition system for a rotary hoe(it was a magneto spark system which became irreparable) I was thinking that 4 38130...
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    38120 battery pack

    I bought a 36V 10Ah 38120 battery pack from BMS Battery.When the charger shows a green LED the voltage reads 41.5-I assume it's fully charged-there is a BMS inside the pack. What would it read at approx half charge and then at the getting low stage. Thks Peter
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