OpenAMRobot
Require Battery pack and BMS details #14
-
|
|
Beta Was this translation helpful? Give feedback.
Replies: 6 comments 3 replies
-
|
Dear Rachana-DGAMR let me prepare more detailed document here, it will take some time, but I hope I can share first part of it in a few days. |
Beta Was this translation helpful? Give feedback.
-
|
Dear Alex,
Any update on the battery specification, data sheet & BMS protocol.
Regards,
Rachana,
…On Mon, Dec 1, 2025 at 4:17 PM Alex Reznichenko ***@***.***> wrote:
Dear Rachana-DGAMR <https://github.com/Rachana-DGAMR> let me prepare more
detailed document here, it will take some time, but I hope I can share
first part of it in a few days.
—
Reply to this email directly, view it on GitHub
<#14 (comment)>,
or unsubscribe
<https://github.com/notifications/unsubscribe-auth/B2ZT6ER3HI2UI3NF4RTHLDD37QMENAVCNFSM6AAAAACNUW2Q26VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKMJSGMYTEMY>
.
You are receiving this because you authored the thread.Message ID:
***@***.***>
|
Beta Was this translation helpful? Give feedback.
-
|
LiTech-LiFePO4-25.6V-52Ah-8S1P-Battery-Pack-datasheet.pdf The manufacturer also offers multiple form factors, which allows for more flexible weight distribution within the robot’s chassis. The selected battery pack is equipped with an integrated BMS, and communication can be established via UART or CAN through an appropriate interface converter. Additional information is available on the manufacturer’s website: UART-based communication functions can be provided upon request. Sample pricing: 295 USD per unit (same pricing applies for 10–20 units). +86 769 8203 3053 Ultimately, battery selection depends on the robot’s functional requirements, performance expectations, and operating modes. It is my pleasure to assist you. In the near future, I plan to prepare a more detailed and structured article covering battery selection principles, BMS integration, and wireless charging options. PS: Dalyelec probably one of the leading suppliers of the BMS (also check their Chinese web-site), you can find RS485 Modbus and any other options in their product line, if you need my help here- let me know. |
Beta Was this translation helpful? Give feedback.
-
|
Hello Alex,
Thanks for sharing the information. However, the battery dimensions seem
large. I'm sharing the project images again for reference.
Could you please double-check and confirm the battery suitability? Based on
the image, there are 4 packs, with the architecture consisting of 2 BMS
packs and 2 battery packs.
[image: image.png][image: image.png]
Regards,
Rachana,
…On Thu, Dec 4, 2025 at 8:23 PM Alex Reznichenko ***@***.***> wrote:
Dear @Rachana-DGAMR <https://github.com/Rachana-DGAMR>
We initially planned to assemble custom battery packs using 32700 3.2 V
LiFePO4 cells combined with a Dalyelec BMS (https://www.dalyelec.eu/
). However, a more efficient and time-saving approach is to use a
ready-made battery pack (see attached datasheet).
The manufacturer also offers multiple form factors, which allows for more
flexible weight distribution within the robot’s chassis.
The selected battery pack is equipped with an integrated BMS, and
communication can be established via UART or CAN through an appropriate
interface converter. Additional information is available on the
manufacturer’s website:
https://litechpower.com/product/25-6v-52ah-battery-lp8s1p10a40af001/
UART-based communication functions can be provided upon request.
Sample pricing: 295 USD per unit (same pricing applies for 10–20 units).
Contact:
Felix Hu
Sales Manager
***@***.***
+86 769 8203 3053
Ultimately, battery selection depends on the robot’s functional
requirements, performance expectations, and operating modes.
It is my pleasure to assist you. In the near future, I plan to prepare a
more detailed and structured article covering battery selection principles,
BMS integration, and wireless charging options.
PS: Dalyelec probably one of the leading suppliers of the BMS (also check
their Chinese web-site), you can find RS485 Modbus and any other options in
their product line, if you need my help here- let me know.
—
Reply to this email directly, view it on GitHub
<#14 (comment)>,
or unsubscribe
<https://github.com/notifications/unsubscribe-auth/B2ZT6EXFLMEFP2IKY2R3G5T4ABDGNAVCNFSM6AAAAACNUW2Q26VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKMJWGIYDCNQ>
.
You are receiving this because you were mentioned.Message ID:
***@***.***>
|
Beta Was this translation helpful? Give feedback.
-
|
Dear @Rachana-DGAMR You can see that with the battery length of 375 mm and a robot width of 600 mm, the pack fits comfortably in the available area. The battery width is 175 mm, and the available space is approximately 190 mm, so it fits without issue. The height also meets our installation constraints. PS: As mentioned earlier, we previously used custom battery packs for weight balancing. This approach can be beneficial in mass-production scenarios or when precise weight distribution is required. However, at the moment I do not have the drawings for those custom packs readily available. The packs themselves were straightforward: 16 pcs of 32700 LiFePO₄ cells arranged in an 8S2P configuration to achieve the required voltage and capacity. For that connection topology, current and voltage BMS was selected accordingly from the standard Dalyelec series. If this is not mass production - I would not recommend assembling a custom battery pack. Considering the cost of components, labor, tooling, protection materials, and testing, the final price will be comparable to that of a ready-made pack, while taking significantly more time and effort. If weight balancing is required, you can select smaller battery modules from the standard LiTech lineup, which allows more flexibility in distributing mass within the robot. |
Beta Was this translation helpful? Give feedback.
-
|
Dear @Rachana-DGAMR you can also check the place in the very center of the robot - you will see there a place prepared for 4 standard lead acid 7Ah accumulators (for lifepo4 in the same form factor it to s already 12Ah example - https://de.dchousepower.com/products/12v-12ah-lifepo4-lithium-batterie ). |
Beta Was this translation helpful? Give feedback.
-
|
Dear Alex,
Thank you for sharing the details. They were very helpful.
Following your recommendations, we have decided to utilize two 25.6V 15Ah
battery packs in parallel for the prototype. The battery details are
provided below. Could you please review them and confirm if we can proceed
with this battery pack configuration?
Furthermore, with the proposed parallel connection of two battery packs,
the resulting configuration will be 25.6V at 30Ah. Could you please advise
if this capacity is adequate for the application, or if it would be more
suitable to utilize four battery packs in parallel?
[image: image.png]
Regards,
Rachana,
…On Sun, Dec 7, 2025 at 6:38 PM Alex Reznichenko ***@***.***> wrote:
Dear @Rachana-DGAMR <https://github.com/Rachana-DGAMR> you can also check
place in the very center of the robot - you will see there place prepared
for 4 standard lead acid 7Ah accumulators (for lifepo4 in the same form
factor it to s already 12Ah example -
https://de.dchousepower.com/products/12v-12ah-lifepo4-lithium-batterie ).
In total you can place there up to 50Ah.
—
Reply to this email directly, view it on GitHub
<#14 (reply in thread)>,
or unsubscribe
<https://github.com/notifications/unsubscribe-auth/B2ZT6ETKL4GM3EZEQBUR5C34AQRGRAVCNFSM6AAAAACNUW2Q26VHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTKMJYGYZTGNA>
.
You are receiving this because you were mentioned.Message ID:
***@***.***>
|
Beta Was this translation helpful? Give feedback.
-
|
Dear @Rachana-DGAMR I'm happy to help and happy that you found my advices helpful. PS: I do not see your pictures in previous one and in the last message. @Rachana-DGAMR |
Beta Was this translation helpful? Give feedback.
-
|
Dear @Rachana-DGAMR, I hope you're doing well! Thank you for your work on our project and your questions. This will greatly help us develop it, and it may also be useful for other people and participants who can benefit from your experience. |
Beta Was this translation helpful? Give feedback.
Dear @Rachana-DGAMR, I hope you're doing well!
Thank you for your work on our project and your questions. This will greatly help us develop it, and it may also be useful for other people and participants who can benefit from your experience.
I'd like to ask you to share your experience working on our project. Since the project is in its early stages, any additional information, especially from external users, about the build process and other issues is invaluable.
Every user and your feedback gives us the foundation and insight to improve and accelerate the project's development.