Purchasing from ShenZhen Victpower Technology

[cwah]

They however said that each cell will be between 18-19AH. So that's obviously not premium cell. I want another charger because they break easily. I often have bad experience with charger. And I can also charge it in otger place.

Flexy has some problem witb them and they didn't aknoledge the payment.. Still some doubt with this company

[999zip999]

These are 18.5ah cells.

[deVries]

They however said that each cell will be between 18-19AH. So that's obviously not premium cell. I want another charger because they break easily. I often have bad experience with charger. And I can also charge it in otger place.

Flexy has some problem witb them and they didn't aknoledge the payment.. Still some doubt with this company

Hey, I had my doubts that you would ever buy a battery from China.

Congratulations for this risky move by you, especially!

Hopefully, it will turn-out well for you too. Do report back and let us know what you think.

Thanks.

[HombreNeuvoElectro]

Hi Cwah,

How is your communication with victpower?

I was thinking of making a buy on a pack 48V 20ah.

I got a quote of $400 + $172 shipping to Ireland.

But the link she then sent to me seem to be the older Lifepo4 packs.

I may be willing to do a joint buy with you to save on postage but i would need the pack then forwarded to Ireland which we would share total cost of shipping.

Also Xin quoted the weight to be 13Kg including charger which is high.

I was considering buying cells to try make my own pack but with BMS, Cell Price, Charger and other things i think buying the cells and building your own pack is almost more costly that buying a completed pack

[cwah]

Hello Hombre,

Communication with Victpower is quite nice actually. Xin answer really quickly all questions and I can even chat with her via skype. But communication with a seller is always nice before the product is purchased

Your quote total price is similar to what I have been quoted. Except that for me the battery was more expensive and the shipping cost lower! I think somehow they play on the shipping cost to give us incentive for a bulk purchase. But at the end of the day we both pay the same price.

I already ordered a 60V20AH A123 pack from them, around 14-15kg shipped for a total of 684.1USD. I decided to go via Paypal because Flexy had a problem with them where they said they didn't receive the payment. Using paypal add around 20USD to the total.


To evaluate the total weight, I understood that you'd have:
- 0.55kg*16 cell= 8.8 kg for the battery
- 1-2 kg for the charger
- And additional weight probably for the battery box and foam protection.

So a minimum of 11kg for the shipping weight. 13kg isn't that far. But better to check with her if you have the A123 20AH cells, and if you have a case or not. I wanted initially to have a metal case but it adds 2 kg to the total weight so I decided not to have it. Maybe your pack is well protected and that's why it's heavier.


I just ordered last week. They have a production time of 10-15 days... So I don't expect to receive the battery before next month... Wait and hope...

[HombreNeuvoElectro]

Sounds Good cwah,

I am half considering to hold off and wait until you get your pack to get your opinion of the pack.

But more than likely i will place an order soon and pay but paypal also.

That is one huge pack you have ordered. What plans do you have for it? Have you considered mounting options?

My frame is too small to mount inside the frame so that is a big headache. Trying to install panniers is also a headache. Handlebar mounting is an option but again not ideal.

Xin came back with a weight of approx 9Kg for my pack.

In reality i think 16s is too much for my needs in one pack. I want 25mph of a Mac 8t. So i think 12s would do this and yet it could be still small an light enough for one side of a pannier. In future i could add another 36v 20ah on the other side for mega range or in series for more volts.

But i know if i got a 36V pack i would be probably wishing i had bought the 48V.

The most flexible way would be to buy the cells and build modules from agniusm when he has more available but this would be a learning curve and take much more time.

A slight concern i would have with the built pack is not having access to the cells and being able to monitor each individual cell. Also Xin advised to buy the cells if you can build a pack. I would have concerns that the quality of cells going in built packs could be less than the bare cells.

Do you think this could be possible?

I wish you luck with you pack and i think i will be joining you very soon in purchasing

[cwah]

Thanks. I'm planning to mount it on the front luggage bag of my brompton

This bloc is actually quite strong, and as it's directly fixed to the frame and not the handlebar the impact on handling is low. Here an example of the front bloc handling a kid:


I also have a mac 8T, and also need a minimum of 25 mph. So getting a 16s would be too slow for me. That's why I decided to go on 20s, with the disavantage of the weight. But this pack has very good resale value, so if it doesn't work for me I can still sell it back with minimum loss.


I was thinking about building my own pack first, but as I've never done it, I decided to go on a built pack and repair it if there is problem to learn initially. And build my own pack next time with a complete build pack as example next to me

[999zip999]

Hombre building your own pack sounds good, but it takes a long time and all the parts aren't at the local store. The plug and play battery sounds best if victpower has quailty build. The cheap vict-packs have had more then a few problems with the 220 rounds cells inside. The A123-20ah cells have a better change. Yes 48v realiy lights up a ebike and 20ah is great size pack for a ebike motor. I would build a cardboard box the size of the battery. then go looking for a old comly frame with the box as to fit it in the triangle. Cheap 60-100usd. bikes and good japanese bearings. I'm going to put 12s in the triangle and 12s on the rear rack. For 36v40ah for range or 72v20ah normal for hills. Like to hear more about prebuild victpower packs, connections ect.

[HombreNeuvoElectro]

999zip999 ...

I like your thinking. 36v40ah is genuine 20=Mph / 40miles range on a reasonably efficient motor.

I have already shelled out for a full suspension frame for my project buy to more i look at this new bike the more is realize it is not ideal. Triangle room would be a no go with these cells. My older ebike seems more suited for larger cranks and battery space.

Do you have any of cells? I see you were looking for some of agniusm's 12s modules. Them modules look sweet.

How would you plan to manage your modules?

I was thinking if cellogs 8's and alarm would be good enough to manage these cells without a BMS if the range was not being pushed on the battery? And would the cells stay reasonably balanced?

[999zip999]

I have 25 A123 20ah cells going with the Drutledge build as a bolt togethere thing. So 2 12s and they will have balance wires and maybe a bms later. I have a daily battery 74v10ah konion I build, lot's of work with used cells. So i have time to get this togethere. Building a battery takes time and angiusm sold out of 12s. So on with the Drutledge build about 80usd. in parts for the two without a case. I would buy a victpower made pack for that money. But have read lot's with victpower earlier problems. Then people don't come to E.S. to tell how great there battery is. Only asking for help. So. Do you fell lucky. I did get my cells from victpower midwest group buy. Now charghing and cutting parts.

[ohzee]

Yesterday I received my 14 cells from oat which were in the original packaging from China along with some extra from Oat (thanks)
to make it extra safe.

Just measured them and every single one was at 3.28v.. My 1st purchase from Victpower directly there were around there , but
I had about 5 which were a bit more or less.. Also the cells all looked pristine where before I had some various creases or indentations.

Just thought I would mention IMO these look better then what I purchased before myself.

[oatnet]

Just thought I would mention IMO these look better then what I purchased before myself.

glad you like 'em. I didn't inspect the cell bodies though, that was just luck. I did check resting voltage, and the Teflon barriers etc, before I sold them. 8% of my cells were substandard - I think they will all give a normal lifespan, but I thought it was fair that the buyer should get a discount for the imperfections.

I figured there would be some percentage of substandard cells, I sorted them because I was worried that half that percentage would be in one box, and someone would be disappointed.

-JD

[flexy]

Just incase anyone is paying Victpower by direct transfer, make sure you visit your bank to set it up.

I tried to do it online, the payment bounced back because my bank doesn't give enough room on the web form to put in the full payee account name. Chines banks don't like this.

Paypal is sooo much easier

[cwah]

So no problems with Victpower? everything is fine?

[VeloV]

I'm considering a Vict order once I find a good 76-cell BMS solution to use with them.
I'm looking at 80-100 cells to end-up with some spares, and would like to hit the 500 qty to get the slight price cut, but not a deal killer.
I'm not interested in re-shipping since the Federal Regs have tightened, but could meet one-time to distribute centrally in SF or Oakland/Berkeley, or they could be picked-up at my shop in Sebastopol.
This would be an all costs/risks shared deal.

Probably best to PM me and not use this thread to discuss

or

Ross
707

490

5513

laters

http://www.veloverde.net

[flexy]

So no problems with Victpower? everything is fine?

I just had a lot of hassle with the bank transfer. I'm still waiting for my order.

They sent a mail today to say they will soon be running out of stock.

[cwah]

I hope I won't have problem with Victpower neither.

Here's the picture of the 60V20AH pack they took before sending the pack:




I hope I won't have problem with this pack. Fingers crossed!

[deVries]

I hope I won't have problem with this pack. Fingers crossed!

Here's your chance to be the ES science lab "mad scientist" and do what texaspyro always suggests!

OR, open it up & show us how the tabs are connected.

Now, I am reduced to trying to get unsuspecting schmucks to connect the big red wire to the big black wire One can only hope...

[ohzee]

cwah that looks pretty nice.. id call that a well made pack.

Sealed tight as well. So you have to attach the BMS yourself..

let us know how she works id have to imagine it should be fine for you

[cwah]

Thanks guys.

Devrie, I may open the pack when I receive it. But first I'll test the cell health and capacity.

Ohzee, is it a problem to attach the BMS myself? I can just glue it to the pack isn't it? (or move it anywhere I prefer)

[999zip999]

Nice the BMS has some protecction. And yes it is best to get it off the pack. What's it for motor and controller setup. What's it going to fit ? Don't cut it open if it works. Just cycle it a few times first. FIRST. And don't do a ah test the first day. O.K.

[ohzee]

Thanks guys.

Devrie, I may open the pack when I receive it. But first I'll test the cell health and capacity.

Ohzee, is it a problem to attach the BMS myself? I can just glue it to the pack isn't it? (or move it anywhere I prefer)

Yea I meant that more as a question sorry hit submit before I formatted correctly.

I was mostly curious if they had not secured it to the battery.. if so id imagine that's so you can place it on either side.
that BMS looks similar to the one I got from cell_man also tho hard to tell how similar.

how many amps you plan on pushing ? Sorry if I missed that somewhere sometimes hard to keep up with it all.

[cwah]

It's a 15-40A bms. So at full charge it would be at 72*40 = 2880W. More than enough for my Mac motor

[cwah]

Nice the BMS has some protecction. And yes it is best to get it off the pack. What's it for motor and controller setup. What's it going to fit ? Don't cut it open if it works. Just cycle it a few times first. FIRST. And don't do a ah test the first day. O.K.

Where do you see the protection on the BMS? It would be for a Mac 8T + Infineon 12 FETs on a Brompton

Why do I need to cycle it a few times first? Oh.. yes, so the cells get the maximum capacity isn't it? And why shouldn't I cut it open if it works?

[999zip999]

Because It will not go back in the same box the same. Why cut it open if it's working. But yes go for it i would like to see if it's bolted togethere or welded or what ? And take the cover off the BMS to see how many fet's ect.