Recent content by louispower

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...

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...

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.

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...

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...

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...

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...

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...

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...

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...

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

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.

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...

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...

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.