Recent content by mihai_atanasiu

ask ping for a BMS; it is the simplest mode to protect your cells. and you can use the Meanwell for charge with the BMS. You have to adjust the voltage of the power supply to 16 x 3.65 = 58.4 V; If you will monitor the charging process you will see that at the end of the charging the current...

cut the XLR connectors and put a simple RCA;

Yes with 42 cells you can make an 14S3P pack; but with these li-ion 18650 cells that it is not a good solution; these cells are max 2C; in practice it is good to use them 1C max. 3P is 6.6Ah that is too low. And you still need another BMS for 14S; that 10S BMS cannot be modified for 14S; and to...

You have 40 cells total; because there is 10S you have ten strings of four cells in parallel. For 14S you need another 16 cells to make four strings; But, first thing: the bottle is too small; second, you need another BMS for 14S; third you need another charger. It's not so easy to upgrade an...

very interesting pictures; are the green cells A123 26650 cells ? Can you measure one cell ? if it has 26 mm diameter it is A123 26650. Sorry, it is a Lithium ion 10 S. Maybe 18650 round cells.

hi, can anyone help me with this problem ? I have an Chinese charger that has this lock; it starts only I plug off both the AC and DC cables. I tried to remove that transistor from the daughter board but nothing new; The charger stops and never restarts.

try http://www.ev-power.eu/index.php?p=productsList&sWord=promo this; it is near you;

A 500 A controller with 144 V equal 72 kW; about 90 HP;

Like amberwolf said it is difficult to repair the Vpower batteries; I also bought one last year in the summer; 36V 20AH (18P12S) with 212 $ without shipping on an auction; In the first charge/ discharge one cell group died; the supplier sent me a "new" one; I opened the pack, cut the bad group...

I made an order from G-Power: e bike kit: hub motor 36V350W front wheel without spokes and rim, controller 36V350W, throttle and breaks; Total cost with shipping 170$; The parcel arrived Friday 17 June; I was Saturday to a bike shop to mount the motor with spokes and rim and yesterday I took the...

Today I will receive a parcel from G-Power with a ebike kit and an Fuel Guage; At product description : ">Apply to PCB/PCM of 1~13 cells li-ion battery pack. >Apply to PCB PCM of 1~16 cells LiFePO4 battery pack. >No external power is need. >Can connect directly to PCB/PCM via special...

guys, maybe with http://www.bmsbattery.com/li-ion-cell/12-4ah-3c-c-rate-26650-g-limn2o4-cylindrical-battery-cells.html this kind of Li ion cell; they make packs with these cells; which is why we can not ? the cells are rated 2C discharge; the packs that they sell have 12AH with max continues...

I found on Ebay a lot of 18650 Li-ion cells with different capacities between 1000 mAh to 3000 mAh; especially http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=280498128322&ssPageName=ADME:X:AAQ:US:1123 18650 Li-Ion 3.7 V 2400 mAh costs 1$ each; I asked the seller about the discharge rate...

hi, I am considering to transform an city bike with 3 speed in an electric bike; My first choice is to put a front wheel hub motor; The second choice is to make a non hub electric bike; the question is : how good is the 3 speed hub system ? can electric motor destroy the mechanism ?

The problems with vpower packs are from the refurbish A123 cells; I also bought one in the summer and is still on the test board; Like yours, form the first time the pack was unbalanced; only 4 or 5 Ah drained after a few cycles and a bad cell; I asked wpower guy and he send me a new one after...