Advice about 52V battery

boraicho

10 µW
Joined
Apr 22, 2017
Messages
5
right now, i work on bmx bike.
Everything working but can be someone help me with battery? Can anyone advise me?
I would rather 52V battery pack but one side of battery can't exceed 130mm
first i did think about this battery :
https://www.aliexpress.com/store/product/Free-Tax-High-power-1800W-48V-20AH-Electric-Bike-Battery-48V-20AH-E-bike-Battery-48/1798608_32890826764.html?spm=2114.12010612.8148356.4.100b7fa4Bg26s5
but is striking for me, that for example this battery 52V has smaller dimensions than 48V
https://www.aliexpress.com/store/product/Free-Customs-Tax-52V-21AH-Lithium-battery-52V-21AH-Scooter-Battery-52V-Ebike-Battery-use-SAMSUNG/1798608_32961815390.html?spm=2114.12010612.8148356.4.3fef6b26tMrhnY

Some advice from you? Thanks a lot.
 

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