Which cells to bike conversion

[Mixons]

Hi guys, I have chosen already motor that i will use in my bike conversion and it will be Mxus XF15 350W in front wheel with KT Sinus(on rear I have Alfine 8 gear). Now i am looking for battery to fit this. I am riding bike as courier so a whole year, thats why the most important for me is longevity of battery cells. I have read that in case of longevity the best is 36V. Now I have a question which cells from this three will be best: LG INR21700-M50LT or SAMSUNG INR21700-50E or LG INR18650-MJ1?

Thanks in advance.

 

[R4850S1_]

I would go with M50LT

 

[Mixons]

Okey i have chosen LG. I have another question because i can't decide between 36V20ah and 36V25ah. My weight is 72kg, bike before conversion is 13kg, I am driving in the city and will use lower assist modes. In this conditions will 36V20ah be enough for like 80km or i need to take the bigger one? The main reason why I am thinking about these is weight of battery. The smaller is around 3,5 kg, the bigger 5kg.

 

[nicobie]

Remember that when you have a motor on your bike the weight doesn't matter as much. Myself, I'd go with the larger pack if there is room for it.

 

[docw009]

The LG M50LT is a 5000 mah battery with a current rating of 14A, Each cell weighs 68.2G. Your choices are 20AH in a 10S-5P or 24AH in a 10S-6P. The difference in weight for 10 cells is.70kg. Are you having this battery built?

Longevity is achieved by running the cells at a lower current per cell, and also not charging them as high. In my opinion, by going higher AH, you can charge them to 905 and have the same capacity as you would with 20AH, and gain more life.




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[Mixons]

Yeah I was wrong about this difference in weight of battery, actually the shop mislead me by mail, but I talked with them via phone and its like you wrote 700g difference so I will take the bigger one. Thanks guys!