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  1. louispower

    Is my 48V LiFePO4 battery with problem?

    Tmho, The BMS is setup 3.9V protected for charging, that is when BMS detects any cell voltage is 3.9V it will cutoff the charging. Without the BMS you could charge a single cell above 3.9V or even higher, but after you cutoff the charger this voltage will drop quickly to the voltages you have...
  2. louispower

    Is my 48V LiFePO4 battery with problem?

    Hello Tmho, with a lifepo4 battery if you leave it there and use it seldom, its capacity will drop after 3-6 months quickly. The best for a new lifepo4 is to charge it immediately after you use it on ebikes, most importrant is not to have the new battery discharge fully before you charge it...
  3. louispower

    Is my 48V LiFePO4 battery with problem?

    Hi Tmho, honestly we didnot see any problem since this battery has been 3 years old, the fact that the cells capacity drops a little is normal. thanks.
  4. louispower

    Is my 48V LiFePO4 battery with problem?

    invited by Tmho I would like to paste here the reply to his question. Hello Tmho, the cells voltage is 3.65V when the battery was initially assembled, after using on ebikes for some time (for example 1 year, yours battery was produced in 2008) its capacity will drop a little and each cells's...
  5. louispower

    Paralleling batteries of different Ah?

    Practically it is difficult to ensure 2 different packs has a voltage difference less than 0.5v, so a diode might be a better choice, I don't understand technology, the diode acts as a fuse? :oops: Crash's response make us recheck the controller cutoff voltage. The 48v cutoff voltage was set...
  6. louispower

    Paralleling batteries of different Ah?

    according to my engineer diode makes no sense, what you need to do before parallel is to meausre the actual voltage of the 2 packs, and ensure the voltage difference is below 0.5V between the 2 packs, otherwise the current may burn the battery fuse. Another thing we would be interested to kow...
  7. louispower

    World Wide Electric Bike 36v kit, Fusin gearmotor review

    Hi John, we are sorry you could not change the controller by yourself. If what I rememberd is correct, your 48v controller is one with only 6 Mosfets, while our present controller is type with 9 mosfets. If you want bigger current please email me your motor specifications, voltage level, and...
  8. louispower

    World Wide Electric Bike 36v kit, Fusin gearmotor review

    Hi, all of you might be interested in such a test of our rege controller with a driect drive motor, and here it is made by a third party customer. http://fusinmotors.com/distribution/test-report-on-the-24v-controller-part-1-t61.html ---part 1...
  9. louispower

    World Wide Electric Bike 36v kit, Fusin gearmotor review

    Hello Crash mashine, welcome to endless-sphere, you will find this is a very professional site for EV technology. I think I must post here you findings on the "negative voltage" by our kit with your stand alone cycle analyst from ebikekit, this should be a good proof that the rege works...
  10. louispower

    Chinese Products: Buy at your own risk

    does this has any relation with cultural mindset? think if a US manufacturer does same thing is US and how they will be treated by US law? But in China if this manufacturer has good relation with local officials they might be not punished. Good relation means to pay money and to avoid...
  11. louispower

    Chinese Products: Buy at your own risk

    there are even worse cases than what you posted here, hard to comment on this, has been related with politics.
  12. louispower

    Chinese Products: Buy at your own risk

    Although a Chinese made product with good quality will cost less money than similar products made in USA ( except for the petrol :lol: ), so there will be motivation of import to make money. Basic rule of econimics, hard to disobey it by any one.
  13. louispower

    Chinese Products: Buy at your own risk

    Absoutely I agree with you, for final customers to buy from local dealers is wise choice for ever, especially for the light EV products. We could receive requests almost everyday to buy from us directly, and there are also some requirements of "Drop shippment" business, for areas where we have...
  14. louispower

    Chinese Products: Buy at your own risk

    it's hard to image to buy a good quality umbrella at 2 dollars even in China, as I know the manufacturers have differnt quality level for same kind product, the difference between this is the raw materials quality level. You pay good price, you get good quality products, otherwise rubbish. In...
  15. louispower

    Fusin Motors /WorldWide Electric Bikes 48V 10AH Kit Review

    Hi Dan K how are you doing now, wish all is fine by you. Just remind you some photos submitted by you in this thread were disappearing, would you check this and finish your review some time when it is convinent for you, we all are expecting this. Thanks.
  16. louispower

    The petrol price in China

    while yours are falling, ours is rising twicely last month, first on June 1st, second one on June 30th. Experts here said this is because oil price is rising on the international market, economists here from the petrol company said they are losing money even at the increasaed price, people here...
  17. louispower

    The petrol price in China

    anybody here knows the petrol price in China? Today is July 8th, in my city the petrol price for 93# is USD0.88/litre, 93# is about same to your 89#, but this 93# petrol is Ethanol gasoline! So the price for one gallon is USD0.88 x 3.785 = USD3.33 /gallon, has been higher than it in US? At...
  18. louispower

    Fusin Motors /WorldWide Electric Bikes 48V 10AH Kit Review

  19. louispower

    Fusin Motors /WorldWide Electric Bikes 48V 10AH Kit Review

    Hi Dan, please PM me your detailed address and phone number, a new pack will be sent to you by express next week.You should get it next weekend. Also please send back the broken pack to Steve, but please keep your charger with you. Thanks.
  20. louispower

    Fusin Motors /WorldWide Electric Bikes 48V 10AH Kit Review

    Hi Dan, a really bad news today, but It could be worse if it hurt you seriously, good to know you are ok yourself with this accident. now back to the accident, sorry I didnot see a photo how the wheel was installed on your bike, here is a photo we could show how we install it here in our...
  21. louispower

    Fusin Motors /WorldWide Electric Bikes 48V 10AH Kit Review

    Thanks for the time and efforts. 1: the controller is 18A max by 48v controller. It is a well sealed controller. The max amperage by our 48v controller could be 22A upon specif order requirements; 2: The meter is updated from a traditional meter for sla battery, now it seems to work not...
  22. louispower

    Worldwide Electric Bikes/Fusin Motors Kit On The Way

    There are many things to be done by Dan :mrgreen: be a little patient of this, and make out a reasonable sequence for this review might be helpful. 1: outlook of this kit 2: Performance of the kit under different circumstances 3: quality of the main components, maybe include the inner...
  23. louispower

    Worldwide Electric Bikes/Fusin Motors Kit On The Way

    Just a suggestion, maybe disassemble the battery pack and see what is inside. I happened to see this post http://www.endless-sphere.com/forums/viewtopic.php?f=4&t=8452 , a review on ebikekit 36v/10ah lifepo4 battery, have to say they got exactly same battery pack and cells as ours. Please have...
  24. louispower

    3 speed electric bike

    maybe a simple test couldl be done in this way: you have a bike with the kit installed, but remove all the mechanical brakes. Use a voltage meter pre-connected with the battery, which could measure the battery output data, remember this data, say 51V. Ride the bike downhills and acquire a...
  25. louispower

    3 speed electric bike

    when someone try to hold a driving car it is difficult not to fell the car also wants to take him together :lol:
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