Reention Dorado 48V 25Ah 29Ah&36V 30Ah (505L) Replacement Battery for eBikes Surface 604,NCM,Rize,Magnum,Aventon

[TPEHAK]

The yellow triangle connector has only 2 wires coming from it.

 

[PCeBiker]

The yellow triangle connector has only 2 wires coming from it.

It's probably for a headlight, the same as my ebike.
The good thing is that it appears to be powered directly from the battery so you can draw more current from it.

My headlight is powered by a daughter board in the controller, and if I pull too much power from it I'll fry the daughter board and have no lights.

If I wanted to power more than a single low power headlight, I'd have to use the light output wire to operate a relay that would pull power directly from the battery.

 

[Jenny Mao]

Hello all friends, Alibaba March Promotion Starts!

PayPal discount​

Buyers who use PayPal to pay orders for the first time can save US $2 on every US $100 they spend, up to a maximum discount of US $30.

USD600 for Dorado 21700 505L 48V 25Ah with 4amp charger.
USD500 for Dorado 21700 440L 48V 20Ah with 4amp charger.

With shipping cost and custom tax all including, shipping to USA,Canada,Europe,UK,Australia.... are all available.

Pls send inquiry or message on below Alibaba site, which is a product link under my Alibaba working account, or send requests to my email, [email protected] or [email protected]. Thank you for all your kind supports.

Reention Dorado 21700 48v 25ah High Capacity Lithium Battery By 21700 5000mah Ncm Cells For Capacity Upgrade - Buy 48v 25ah,Reention Dorado 48v 25ah Product on Alibaba.com

Reention Dorado 21700 48v 25ah High Capacity Lithium Battery By 21700 5000mah Ncm Cells For Capacity Upgrade - Buy 48v 25ah,Reention Dorado 48v 25ah Product on Alibaba.com

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[ProphetZarquon]

Hello, thank you for asking!

For Dorado 21700 505L(65pcs 21700 cells), max 52V 20AH, 14S4P 56pcs of Samsung 50E 21700 cells, continuous discharging current about 40Amps
For Dorado 21700 440L(52pcs 21700 cells), max 52V 15AH, 14S3P 42pcs of Samsung 50E 21700 cells, continuous discharging current about 30Amps

Please kindly note that the Samsung 50E each cell nominal capacity is 4900mAh(4.9AH), but usually it is counted as 5000mAh(5Ah) for easier counting.
Each single Samsung 50E cell continuous discharge rate 2C(capacity)=2*4.9=9.8Amps, counted as 10Amps, peak discharge rate 3C=3*4.9=14.7Amps, counted as 15Amps.
Thus we can conclude 14S4P 52V 20AH, which can continuously discharge current 40Amps, peak 60Amps.

But the BMS is choosed depending on the motor power. The BMS max allowing current should be 50% higher than continuous discharging current to protect the battery.
For example,
Dorado 21700 505L, 52V 20AH, used for a 1000W rated motor, demanding about 20Amps continuous discharging current, we need choose 30Amps BMS, peak allowing 100±20Amps.
Dorado 21700 505L, 52V 20AH, used for a 1500W rated motor, demanding about 30Amps continuous discharging current, we need choose 45Amps BMS, peak allowing 135±20Amps.
Dorado 21700 505L, 52V 20AH, used for a 2000W rated motor, demanding about 40Amps continuous discharging current, we need choose 60Amps BMS, peak allowing 180±20Amps.
1000W or 1500W motor are both available for use, but 2000W is not suggested, since the battery has to constantly discharge at its ultimate capabililty, which might shorten the battery lifetime.

Recently some people come to me and ask for the upgrade battery for upgrade 2300W rated motor.
The maxium 52V 20AH is not available for 2000W, much less for 2300W.

Could you pls tell what is the motor power you will use with the 52V Dorado battery? Thanks!

Best Regards
Jenny

View attachment 88323

Hi Jenny,
Sorry if this has already been answered here, but could you tell me the approximate internal dimensions of the Dorado 505L case? I know it's not a uniform rectangle inside, so I wanted to model it in 3D; but I don't know the angle or depth of the ends of the case.

 

[Jeremy McCreary]

Hello all friends, this is Jenny from Shanghai Aijiu Energy Tech, and I am new to the forum. Thanks for your time reading the post.


As a 13-year experienced manufacturer of lithium ion battery packs, we have our battery exported all around the world with good feedback. All batteries we sold come with one year warranty.


It is known that Reention Dorado series battery is a popular type used on most electric bikes. There are Dorado Mini, Pro,Plus,Max case for 18650 cells pack, and they are interchangeable as long as the down tube is same long, 505L or 440L. (The battery length correspond as about 18inch or15.5inch.)

For 505L, Dorado Max can do 48V 21Ah/36V 28Ah by Samsung 35E 18650 as maximum option

For 440L, Dorado Plus can do 48V 14Ah while Dorado Max do 36V 21Ah while by Samsung 35E 18650 as maximum option

Reention Dorado Max 505l 48v 21ah 1008wh Ebike Battery Pack By 3500mah 18650 Cells With 30a Bms For 1000w Electric Bike - Buy Dorado 48v 21ah 1008wh Battery,48v 21ah 1008wh Ebike Battery Product on Alibaba.com

Reention Dorado Max 505l 48v 21ah 1008wh Ebike Battery Pack By 3500mah 18650 Cells With 30a Bms For 1000w Electric Bike - Buy Dorado 48v 21ah 1008wh Battery,48v 21ah 1008wh Ebike Battery Product on Alibaba.com

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View attachment 86973

With the cells manufacturer development of technology, the 21700 type cells are becoming the new trend.The 18650 cells in small energy density such as 2200mAh, 2600mAh,2900mAh, will gradually be discontinued.


Thus recently Reention released their new design case for 21700 cells pack.(Sample had been released now, but order is only available in the end of May.)

For 505L, Dorado 21700 can do 48V 25Ah/36V 30Ah by Samsung 50E 21700 as maximum option

For 440L, Dorado 21700 can do 48V 20Ah/36V 25Ah by Samsung 50E 21700 as maximum option

Reention 21700 Dorado Battery 48v 29ah 25ah 48v Ebike Battery High Capacity Lithium Ion 48v 52v Ebike Battery For 1000w Ebike - Buy 48v Ebike Battery 48v 30ah Battery dorado Battery 48v 48v Ebike Battery 48v 25ah Battery Product on Alibaba.com

Reention 21700 Dorado Battery 48v 29ah 25ah 48v Ebike Battery High Capacity Lithium Ion 48v 52v Ebike Battery For 1000w Ebike - Buy 48v Ebike Battery 48v 30ah Battery dorado Battery 48v 48v Ebike Battery 48v 25ah Battery Product on Alibaba.com

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View attachment 86974

Five steps to find a spare Dorado battery that will perfectly fit in your ebike.

First step: measure the battery length of longest part, 18inch/505L or 15.5inch/440L for options

Second step:check the discharge port,2pin/5pin/6pin for options

Third step:check the charging port, DC2.1/3pin for options

Fourth step: confirm the battery voltage,36V/48V/52V for options

Fifth step:confirm the motor power,say 250W/350W/500W/1000W for options


Hope this post can give you some help when you choose a new spare battery. And if you trust us, pls send us an inquiry of any type of ebike battery you might need in the future. Quality is our culture! The Samsung,LG,or Panasonic cells we use are 100% virgin imported cells.


Reention,Shanshan,SYR are main ebike battery case manufacturer in China. Most of ebike battery cases in the world come from them.Catalogue can be downloaded on their website.

Kunshan Reention Mechanical and Electrical Co., Ltd.

Kunshan Ruien New Mechanical and Electrical Co., Ltd. is located in Kunshan High-tech Zone, is a professional design, production and sales of electric bicycles lithium battery boxes and other plastic accessories enterprises. Our products have unique shape, excellent quality and reasonable price...

www.reention.com

昆山市山山电子科技有限公司（SHANSHAN TECH）

昆山市山山电子科技有限公司是一家多品种、高品质各类锂电池盒产品设计生产制造商。目前拥有国内外客户923家，各类锂电池盒产品主要销往日本、欧美等国家。 联系方式0512-57030038。

www.kssssj.cn

HOME - SHUO YI RUI

Wish all of you stay safe and ride safe!!!

Best Regards
Jenny

Jenny Mao Shanghai Aijiu Energy Technology

WhatsApp/WeChat:+86 13262882371

Email: [email protected] | http://aijiupower.com

Add:No.161 Zhenye Road,Songjiang District,Shanghai,201619,China

View attachment 86975

Getting great mileage out of the 20 Ah Dorado on my 2023 Surface 604 V Rook.

Only one problem: When I plug in my USB-C phone (Samsung Note20, Android, 2019 vintage) with 3 different cables known to be good, the phone throws an "incomplete connection" error and won't take charge. Reseating the cables in the port doesn't help.

Some questions, please:
Q1: Could this port be defective? Never saw that error before.

Q2: If defective, how to remedy?

Q3: If not defective, is this port non-standard in some way?

Q4: What's the Dorado USB port's amperage and intended use?

Thoughts, Jenny or anyone? Many thanks!

 

[Slaphappygamer]

Getting great mileage out of the 20 Ah Dorado on my 2023 Surface 604 V Rook.

Only one problem: When I plug in my USB-C phone (Samsung Note20, Android, 2019 vintage) with 3 different cables known to be good, the phone throws an "incomplete connection" error and won't take charge. Reseating the cables in the port doesn't help.

Some questions, please:
Q1: Could this port be defective? Never saw that error before.

Q2: If defective, how to remedy?

Q3: If not defective, is this port non-standard in some way?

Q4: What's the Dorado USB port's amperage and intended use?

Thoughts, Jenny or anyone? Many thanks!

Your charging is probably good. Try charging something else. A light or headphones. Typically, USB-C charges at a faster rate, drawing more amps. It may be the case that the charging port on the battery only puts out .5-1amp. USB-C will want more than that, usually 2 amps, or more.

 

[Jeremy McCreary]

Your charging is probably good. Try charging something else. A light or headphones. Typically, USB-C charges at a faster rate, drawing more amps. It may be the case that the charging port on the battery only puts out .5-1amp. USB-C will want more than that, usually 2 amps, or more.

Thanks! On the display's USB port, yes. Insufficient current is surely the problem there, as lower current USB-C devices do charge, as you suggested. And my phone doesn't throw an "incomplete connection" error message there.

However, the USB port on the bike battery may be defective. The phone ALWAYS throws an "incomplete connection" error message there, one other test device gave an odd indicator light pattern when connected, and the port itself wiggles enough to be a concern.

 

[Jenny Mao]

Hi Jenny,
Sorry if this has already been answered here, but could you tell me the approximate internal dimensions of the Dorado 505L case? I know it's not a uniform rectangle inside, so I wanted to model it in 3D; but I don't know the angle or depth of the ends of the case.

Hello, I have the 2D drawing of the Dorado cases, I am not sure if it helps. Reention won't give me the 3D drawing.
If you need it, pls send me an email, will send you via email. The file can not be attached here. Thanks!

 

[Jenny Mao]

Getting great mileage out of the 20 Ah Dorado on my 2023 Surface 604 V Rook.

Only one problem: When I plug in my USB-C phone (Samsung Note20, Android, 2019 vintage) with 3 different cables known to be good, the phone throws an "incomplete connection" error and won't take charge. Reseating the cables in the port doesn't help.

Some questions, please:
Q1: Could this port be defective? Never saw that error before.

Q2: If defective, how to remedy?

Q3: If not defective, is this port non-standard in some way?

Q4: What's the Dorado USB port's amperage and intended use?

Thoughts, Jenny or anyone? Many thanks!

Hello Jeremy, is your 20Ah battery from us? The 5V PCB we use has a rated 800mA, max 1A output. The USB port comes with Reention case.

 

[Jeremy McCreary]

Hello Jeremy, is your 20Ah battery from us? The 5V PCB we use has a rated 800mA, max 1A output. The USB port comes with Reention case.

View attachment 148519

Thanks for the info and photo. The battery came with my bike. The USB port's amperage may not be enough to charge my phone.

However, from a battery safety perspective, still concerned about the "incomplete connection" error message my phone shows every time I plug it into this port.

Makes me think there's a loose connection. The battery lives in my garage. A battery fire would be disastrous.

 

[ProphetZarquon]

Thanks for the info and photo. The battery came with my bike. The USB port's amperage may not be enough to charge my phone.

However, from a battery safety perspective, still concerned about the "incomplete connection" error message my phone shows every time I plug it into this port.

Makes me think there's a loose connection. The battery lives in my garage. A battery fire would be disastrous.

Based on the fact that smaller devices show unusual charge-status indicators as well, it probably is a bad connection (or a bad 5v board).

One tiny bit of good news is that 5V 1A limited connections probably won't start a fire; but that's not certain since it could be shorting to something else, plus you might see unaccounted draw on the battery under some conditions but not others... That would be a very bad thing.

My guess is that it's the connector on the port itself, that's gone wrong.

5V USB charging circuits & connectors are not expensive these days: If your Rook is not under warranty anymore, you could probably have a local battery builder replace the USB port without much labor or parts cost. At the very least I'd hope to get the faulty USB circuit disconnected.

And of course, Jenny has replacement battery packs if you want one!

I am unsurprised but a little annoyed by the 1A limitation on my battery's USB port. (Likewise, I think my display's USB port is limited to 0.5 or 0.85 amps?) Obviously the design has been around a while, so 1A was probably plenty when it was first planned...

These days though, more than half the "USB" powered devices I have, draw more than USB 2.0 ports were ever designed to provide.

It would be fantastic to be able to get these same battery packs, with a 2 or 4 amp USB circuit (or even better, a variable voltage fast-charger powering that port).

I wonder, does anyone know of any reason our lovely high capacity packs couldn't (or shouldn't) be fitted with higher powered USB ports?

 

[Jeremy McCreary]

Based on the fact that smaller devices show unusual charge-status indicators as well, it probably is a bad connection (or a bad 5v board).

One tiny bit of good news is that 5V 1A limited connections probably won't start a fire; but that's not certain since it could be shorting to something else, plus you might see unaccounted draw on the battery under some conditions but not others... That would be a very bad thing.

My guess is that it's the connector on the port itself, that's gone wrong.

5V USB charging circuits & connectors are not expensive these days: If your Rook is not under warranty anymore, you could probably have a local battery builder replace the USB port without much labor or parts cost. At the very least I'd hope to get the faulty USB circuit disconnected.

And of course, Jenny has replacement battery packs if you want one!

I am unsurprised but a little annoyed by the 1A limitation on my battery's USB port. (Likewise, I think my display's USB port is limited to 0.5 or 0.85 amps?) Obviously the design has been around a while, so 1A was probably plenty when it was first planned...

These days though, more than half the "USB" powered devices I have, draw more than USB 2.0 ports were ever designed to provide.

It would be fantastic to be able to get these same battery packs, with a 2 or 4 amp USB circuit (or even better, a variable voltage fast-charger powering that port).

I wonder, does anyone know of any reason our lovely high capacity packs couldn't (or shouldn't) be fitted with higher powered USB ports?

Many thanks for the very thoughtful reply!

Agree, these wimpy onboard USB ports are a classic case of "great idea, poor execution". Didn't think much about them till RideWithGPS started killing my phone battery. That situation's improved now that I understand the app's "handlebar mode" settings. But when I work up to 40+ mile rides, I may need to carry a power bank.

 

[PCeBiker]

I wonder, does anyone know of any reason our lovely high capacity packs couldn't (or shouldn't) be fitted with higher powered USB ports?

My guess is safety?
You're basically introducing a bigger potential fuse inside of a potential bomb.

I don't think any circuit board designer/builder would want to take on the potential liability for a battery fire?

Some people have wired a high power USB port directly to the battery power cable and mounted it outside of the battery.
That keeps all the circuitry from being inside the battery.

 

[PCeBiker]

.., you could probably have a local battery builder replace the USB port without much labor or parts cost. At the very least I'd hope to get the faulty USB circuit disconnected.

@Jeremy McCreary

I think that you should take your ebike to a battery builder/LBS to disconnect the USB port and have a high output UBS installed.
You can have the port routed to your handle bars which is probably where you would want it.
An LBS can do a pretty clean looking install.

And of course, Jenny has replacement battery packs if you want one!

^^^Yes
Jenny doesn't sell crap with sloppy USB ports.

 

[Jeremy McCreary]

Thanks to all for the help. I now have what I needed most from this thread: Ammo for a warranty claim if it comes to that.

The bike's still under warranty, and I just emailed Surface 604 support about the problem. They've always been helpful in the past, so fingers crossed.

 

[Jeremy McCreary]

Duh, why didn't I think of this sooner department: Wife has the same 2023 V Rook, but with the standard 14Ah Reention battery.

My phone on her battery USB port:
1. Same amount of wiggle between battery casing and port's female connector.
2. No "incomplete connection" error from phone.
3. Port charges my phone! Took 1.3 hrs to go from 27% to 51% — not fast, but better than nothing, which is what I get from the display USB port.

Conclusion: My bike's optional 20 Ah battery has a bad USB port.

Will test to see if her bike battery can at least partially offset the phone battery drawdown due to RideWithGPS.

 

[PCeBiker]

My phone on her battery USB port:
1. Same amount of wiggle between battery casing and port's female connector.

That would make me nervous.
A plug wiggling in the USB port is one thing, but the port itself wiggling in the battery case is different.

I would think that the port isn't waterproof and keeping water out of the battery?

 

[PCeBiker]

I just bought a battery from @Jenny Mao

I'm excited !!

 

[Jenny Mao]

Thank you for your trust! @PCeBiker

 

[PCeBiker]

Thank you for your trust! @PCeBiker

I'm just wondering.
Does the battery's BMS balance the cells?