Help Needed for Building the Best Battery Pack for My Refurbished Scooter

DIY Builds
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Hello everyone,

I recently purchased a refurbished scooter, but unfortunately, it came with a bad battery pack. I need help from someone who can build me the best possible battery pack within the compact size constraints of 475mm x 125mm x 60mm.

I’m looking for a pack that offers the best range possible. I’m open to configurations in 16s, 18s, or even more, if feasible. I have some Molicel cells P28A and can fit them just fine for this build, utilizing three layers and leaving space for a smart BMS.

Based on my calculations, I can fit around 6/7p x 7 x 3 layers, which totals approximately 108-126 cells in the 18650 size. (See pictures) However, I’m also open to using 21700 cells for the build if they offer better performance.

IMG_1203
IMG_12034032×3024 1.78 MB

IMG_1204
IMG_12043024×4032 2.36 MB

IMG_1205
IMG_12053024×4032 1.77 MB

IMG_1208
IMG_12083024×4032 2.2 MB

IMG_1200
IMG_12003024×4032 3.55 MB

Here are a few questions and points where I need your advice:

1.	Cell Supply: Should I order the cells myself (I’ve found some good options for Samsung 21700 40T on nkon.nl) or do you have cells available for the build?
2.	Build Assurance: Since I’ve never built a battery pack before, I want to make sure it’s done correctly and efficiently. I don’t want to waste money on wasting the components and materials.

I prefer to make it build by a person that knows what they’re doing and was recommended this forum because I lost already about 700 on a pack from a famous CN platform that I never received and never been refunded.

I’ve attached pictures of the current deck and space available. Any help, advice, or offers to build this pack would be greatly appreciated.

Thanks in advance for your assistance!

Best regards

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Welcome to ESK8News :beers:

Where are you located?

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Hi! @Common_good :beer:

I live in France metropolitan area

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This is the trusted buildee wiki. Connect w someone in the EU and they’ll help you out.

Good luck!

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Welcome to the forum! I might be able to build a pack for you. I live in Denmark.

Here is some reference of my previous work

But I need to look into if I can get my hand on a decent BMS for the sufficient voltage in time, as I don’t have any on hand at the moment. I’m leaving the country for summer holiday around July 15-20, and only coming back around September 1. So I would need to have everything on hand by around July 10 to finish the pack before I go on summer holiday

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@Dinnye thanks for your answer, please check your PM

Your work is really impressive :sweat_smile::+1:

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Thanks you @Common_good I contacted few members and got one answer.

After looking around the topics on the builds forum the work I saw of the community members is really impressive and inspire confidence :+1:

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Welcome to the forum!

Sucks you got screwed on the first pack, hope you can get your money back one day.

I’ll tell you this tho, if you need anything some of the guys on here are like superhumans with this stuff, and all willing to help.

Let us know how the new pack runs when you get it installed. Sounds like its gonna be a beast!

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