Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

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john61ct   100 GW

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Feb 21 2021 7:00pm

Is there a BMS already wired in?

If no, are the 16S balancing wires accessible from the outside? What type of connector is provided?

______
If yes,

1. please provide a link to the BMS make/model, ideally showing documentation / instructions in English

2. can a "custom shape" order specify that the BMS be kept outside the wrap, with say 30+cm wire leads between the pack and the external BMS?

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 22 2021 8:30pm

libattery21 wrote:
Feb 20 2021 9:29am
DogDipstick wrote:
Feb 20 2021 9:20am
Bet it is 500-1000$ for this 1500Wh.

We pay on average much less here in the U.S.A.
I need to inquiry internation freight company next Monday for approximate shipping fee to US. The exact shipping fee can be given when providing the quantity of this product.
sorry for late reply. The shipping fee for this product is around $131.54 USD/Pcs.
So the total payment for 1 Pcs =Sale Price+Shippment fee=$254.79+$131.54= $386.33 USD/Pcs.

Total payment for 1Pcs is about $386.33 USD/Pcs,which is cheaper than $500 USD.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 22 2021 9:36pm

john61ct wrote:
Feb 21 2021 2:10am
libattery21 wrote:it is 16S 10P and to be charged at 60V.
16S LFP is comparable to LI 14S,

around here usually called "52V", but actually 51.2V nominal.

Personally I would charge to 55.2V for better longevity

approaching 58.4V would be absolute maximum, IMO only for stress testing and capacity / SoH benchmarking.
We can make this 60V 25Ah product by using NCM or LFP cells.
If using LFP cells: it is 3.2V/Pcs for single cells, 60V/3.2=18.75≈19 S, standard voltage=19 S *3.2=60.8V;
the upper limit of the working voltage of the battery pack =19 S *3.65= 69.35V, the lower limit of the working voltage of the battery pack=19 S *2.5=47.5V.

If using NCM cells: it is 3.6V~3.7V/Pcs for single cells, our factory uses 3.7V/Pcsfor single cells, 60V/3.7=16.2≈16 S, standard voltage=16 S *3.7=59.2V
the lower limit of the working voltage of the battery pack=16 S*2.7=43.2V, and the upper limit of the working voltage of the battery pack=16 S*4.2=67.2V.

Setting the working voltage of the protection board between the upper and lower limits of the working voltage of the battery pack is more conducive to the long life of the battery, but it may affect the user experience a bit.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 22 2021 10:21pm

john61ct wrote:
Feb 21 2021 7:00pm
Is there a BMS already wired in?

If no, are the 16S balancing wires accessible from the outside? What type of connector is provided?

______
If yes,

1. please provide a link to the BMS make/model, ideally showing documentation / instructions in English

2. can a "custom shape" order specify that the BMS be kept outside the wrap, with say 30+cm wire leads between the pack and the external BMS?
Unfortunatley,we do not have link to the BMS make/model, ideally showing documentation / instructions.

There is a built-in BMS in the battery pack. The BMS can manage the battery's overcharge, overdischarge, overtemperature, overcurrent, short circuit, balance, collect the voltage of each string of batteries, and the temperature collection harness.

This product is a small battery, and we do not make customization of wrapping BMS outside.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Feb 23 2021 1:14am

Yes 19S is what I thought it should be with LFP, you were the one that stated 16S.
libattery21 wrote:
john61ct wrote:
Feb 20 2021 8:34am
So are these 19S, to be charged at 68-69V ?
it is 16S 10P and to be charged at 60V.
And you also stated these were LFP, and only that specific Dynabat cell

never to be changed without notifying customers

and certainly never any mention of other chemistries being a possibility.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 23 2021 1:23am

john61ct wrote:
Feb 23 2021 1:14am
Yes 19S is what I thought it should be with LFP, you were the one that stated 16S.
libattery21 wrote:
john61ct wrote:
Feb 20 2021 8:34am
So are these 19S, to be charged at 68-69V ?
it is 16S 10P and to be charged at 60V.
And you also stated these were LFP, and only that specific Dynabat cell

never to be changed without notifying customers

and certainly never any mention of other chemistries being a possibility.
LFP and NCM cells are both Dynabat cells.They can be LFP or NCM. We can make cells made by LFP or NCM.

I don't know their diffreence until learning this from our technican. Sorry~

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 23 2021 1:58am

john61ct wrote:
Feb 23 2021 1:14am
Yes 19S is what I thought it should be with LFP, you were the one that stated 16S.
libattery21 wrote:
john61ct wrote:
Feb 20 2021 8:34am
So are these 19S, to be charged at 68-69V ?
it is 16S 10P and to be charged at 60V.
And you also stated these were LFP, and only that specific Dynabat cell

never to be changed without notifying customers

and certainly never any mention of other chemistries being a possibility.
sorry about this ,the following attachemnt is the product specification of 60V 25Ah:

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Feb 23 2021 2:15am

I get invalid format on the PDF

libattery21   1 W

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 23 2021 2:27am

john61ct wrote:
Feb 23 2021 2:15am
I get invalid format on the PDF
It is offical version of Adobe PDF,it should not hard to open.

Okay, I''ll put word format in the attachment following:

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by DogDipstick » Feb 23 2021 8:52am

libattery21 wrote:
Feb 22 2021 8:30pm
libattery21 wrote:
Feb 20 2021 9:29am
DogDipstick wrote:
Feb 20 2021 9:20am
Bet it is 500-1000$ for this 1500Wh.

We pay on average much less here in the U.S.A.
I need to inquiry internation freight company next Monday for approximate shipping fee to US. The exact shipping fee can be given when providing the quantity of this product.
sorry for late reply. The shipping fee for this product is around $131.54 USD/Pcs.
So the total payment for 1 Pcs =Sale Price+Shippment fee=$254.79+$131.54= $386.33 USD/Pcs.

Total payment for 1Pcs is about $386.33 USD/Pcs,which is cheaper than $500 USD.
Thankyou for the prompt reply. Much appreciated.
83.1v of Ironhorse XC.. :) :bolt: by Chevy :bolt: :D Broke 10 horsies :twisted: (..about 85% healed..).. :? Waddyamean? You cant tell me how many amperes/Ft.^2 of the plate ?!?!? :x 1 (pound / second) Horse Power = 338.24 M^2 Kg^2 / Sec^4 ( :twisted: prove me wrong :twisted: ) :| (gottenymoem4115thangs?Yall?) :confused: Fabricator @ BSECo. Inc.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Feb 23 2021 2:23pm

So that datasheet is for the li-ion (NMC) version

Is there one for the LFP pack you originally posted? The voltages, weight / dimensions, and cycle lifespan would be different.

Do they have separate model #s?

Same pricing and warranty?



Sent from my Nexus 6 using Tapatalk


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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 23 2021 10:02pm

john61ct wrote:
Feb 23 2021 2:23pm
So that datasheet is for the li-ion (NMC) version

Is there one for the LFP pack you originally posted? The voltages, weight / dimensions, and cycle lifespan would be different.

Do they have separate model #s?

Same pricing and warranty?



Sent from my Nexus 6 using Tapatalk
do u need LFP or NCM cell?

john61ct   100 GW

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Feb 23 2021 10:08pm

I am trying to clarify your offering, as much for the community as myself.

In fact helping educate you, it seems as well.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 23 2021 10:11pm

john61ct wrote:
Feb 23 2021 10:08pm
I am trying to clarify your offering, as much for the community as myself.

In fact helping educate you, it seems as well.
okay,it seems you make the product info more clear, thanks, man.
so,you are not here to buy products?

we will add product sepcification of 17S later.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Feb 23 2021 11:13pm

Pushy salespeople are very off-putting

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Feb 24 2021 12:31am

john61ct wrote:
Feb 23 2021 11:13pm
Pushy salespeople are very off-putting
I do mean you correct my mistake and taught me a lot.

I am just asking if you would interested in buying this product.If u do not buy this product, I would not force you to buy.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by agniusm » Mar 01 2021 3:52am

Sounds dodgy AF.
Seller cant provide information on the PCM/BMS inside. I mean you should know everything about your product.
No clean pictures. Is it constructed like many other Chinese brands where you can set your house on fire?
Weight. 10kg +/- 1kg. Really? Manufacturer does not know the weight of hes product. I mean sure you can have tolerances on wire length variations etc but 1kg is like 40 cells worth of tolerance.
Sometimes cheap is too expensive

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Mar 02 2021 8:42am

agniusm wrote:
Mar 01 2021 3:52am
Sounds dodgy AF.
Seller cant provide information on the PCM/BMS inside. I mean you should know everything about your product.
No clean pictures. Is it constructed like many other Chinese brands where you can set your house on fire?
Weight. 10kg +/- 1kg. Really? Manufacturer does not know the weight of hes product. I mean sure you can have tolerances on wire length variations etc but 1kg is like 40 cells worth of tolerance.
Sometimes cheap is too expensive
Our techinian is making the English version of BMS specification. He previously only had the Chinese language version.

This product is using Dynavolt cell and its other part is made by our factory. The brand of this product is Thinked. There is no many other brands combined. Only one brand for the cell and the brand- Thinked .

It has UN38.3 and MSDS Quality Certificate. So it will not burn in the house.

Because a battery is composed of multiple cells, the weight will have ±0.1Kg. And the wire length has no tolerance.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by agniusm » Mar 02 2021 9:34am

libattery21 wrote:
Mar 02 2021 8:42am
agniusm wrote:
Mar 01 2021 3:52am
Sounds dodgy AF.
Seller cant provide information on the PCM/BMS inside. I mean you should know everything about your product.
No clean pictures. Is it constructed like many other Chinese brands where you can set your house on fire?
Weight. 10kg +/- 1kg. Really? Manufacturer does not know the weight of hes product. I mean sure you can have tolerances on wire length variations etc but 1kg is like 40 cells worth of tolerance.
Sometimes cheap is too expensive
Our techinian is making the English version of BMS specification. He previously only had the Chinese language version.

This product is using Dynavolt cell and its other part is made by our factory. The brand of this product is Thinked. There is no many other brands combined. Only one brand for the cell and the brand- Thinked .

It has UN38.3 and MSDS Quality Certificate. So it will not burn in the house.

Because a battery is composed of multiple cells, the weight will have ±0.1Kg. And the wire length has no tolerance.
In one of the documents there is stated 1kg tolerance. I see plenty of those on aliexpress, due to manual measure(whaterver that means) allow for 1cm tolerance. Thats on 5x5cm object.
If you dont have english desctiption or clear photos of the product you sell, go and get those sorted before posting. You are selling a product, high risk product and not a cat in the bag. This comunity had enough of crap comming from China. Make it count. Make photos of the welds, state material for busbar, construction of the battery, do english translations of whatever componens must have description, then come and formulate your sales post.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Mar 02 2021 3:16pm

You're not wrong, but also not realistic.

We should be grateful they are willing to sell to us at all.

says their business culture.

Not as if there are so many choices selling from this side of the world

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Mar 02 2021 7:58pm

john61ct wrote:
Mar 02 2021 3:16pm
You're not wrong, but also not realistic.

We should be grateful they are willing to sell to us at all.

says their business culture.

Not as if there are so many choices selling from this side of the world
We sell products to anyone who willing to buy. There is no such business culture in China as you stated. We all regard you as customers.
Last edited by libattery21 on Mar 03 2021 1:48am, edited 3 times in total.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Mar 02 2021 8:10pm

agniusm wrote:
Mar 02 2021 9:34am
libattery21 wrote:
Mar 02 2021 8:42am
agniusm wrote:
Mar 01 2021 3:52am
Sounds dodgy AF.
Seller cant provide information on the PCM/BMS inside. I mean you should know everything about your product.
No clean pictures. Is it constructed like many other Chinese brands where you can set your house on fire?
Weight. 10kg +/- 1kg. Really? Manufacturer does not know the weight of hes product. I mean sure you can have tolerances on wire length variations etc but 1kg is like 40 cells worth of tolerance.
Sometimes cheap is too expensive
Our techinian is making the English version of BMS specification. He previously only had the Chinese language version.

This product is using Dynavolt cell and its other part is made by our factory. The brand of this product is Thinked. There is no many other brands combined. Only one brand for the cell and the brand- Thinked .

It has UN38.3 and MSDS Quality Certificate. So it will not burn in the house.

Because a battery is composed of multiple cells, the weight will have ±0.1Kg. And the wire length has no tolerance.
In one of the documents there is stated 1kg tolerance. I see plenty of those on aliexpress, due to manual measure(whaterver that means) allow for 1cm tolerance. Thats on 5x5cm object.
If you dont have english desctiption or clear photos of the product you sell, go and get those sorted before posting. You are selling a product, high risk product and not a cat in the bag. This comunity had enough of crap comming from China. Make it count. Make photos of the welds, state material for busbar, construction of the battery, do english translations of whatever componens must have description, then come and formulate your sales post.
If you think our Chinese posts in this community is crap,you can choose to ignore this post. For you have serious bias on Chinese, I can say what you comment is also crap. We can sell this product to anyone, except for people like you who think Chinese posts are craps will not be regarded as customers.

Please show your respect.

And I reply your comment for people like you have serious bias on China is just for polite manners.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Mar 03 2021 1:16am

My apologies, likely I'm generalizing too much from my living and doing business in Asia a couple decades.

But it will help your cause in Western markets, if you can take some of agnuism's points as constructive action items

especially since afaic none of your competitors do.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by libattery21 » Mar 03 2021 1:41am

john61ct wrote:
Mar 03 2021 1:16am
My apologies, likely I'm generalizing too much from my living and doing business in Asia a couple decades.

But it will help your cause in Western markets, if you can take some of agnuism's points as constructive action items

especially since afaic none of your competitors do.
I also admit I am too stubborn about some points of my views. I am sorry about my attitude as well. Now I totally understand your feeling about Chinese market.

I also hate those Chinese manufacturers who produced bad quality products without responsibility. However, China also has good quality products .

Our prodcuts have UN38,3 and MSDS Certificates, which means you do not need to worry about burning in the house.

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Re: Customized Deep Cycle 60V 25Ah Lithium Ion Battery for E-bike

Post by john61ct » Mar 03 2021 2:18am

Well "quality" can be subjective.

Best to be "radically transparent", really helps overcome default distrust.

For example, track down the model(s) BMS used, publish the datasheets and instruction manuals in English.

Best to offer ones that are user-adjustable in their parameters, and individual cell/group voltages viewable, ideally from a phone app via BT.

Personally, I would require the balance leads be accessible, and the BMS easily replaced, since they can be the first point of failure and damage the pack.

But I understand only custom pack makers can do that.
libattery21 wrote:Dimension: 344 * 208 * 73 mm (or Customized)
Is that last bit actually available? for what MOQ?

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