48V Battery

[FatOldMan]

I'm gonna build my own battery, 18650's.
There is a test tube holder that holds 10 X 4
18mm test tubes. Thinking of buying 8 of these and epoxying them together to double the thickness. They're cheap. $5-6 ea.
Has any one tried this?
Here is a link to what I'm thinking of using.
https://www.indigo.com/images/products/33770-plastic-test-tube-rack.jpg
Notice that the "bottom" is about the size of the positive terminal. A side benefit is that I can make a seperate 14.8V battery using the last 3 rows. This would run lighting and cooling fans for the electronics. Please pick this apart. I won't be offended. Thanks.

 

[jazz]

go to hobbyking

 

[George S.]

This might be easier, if it would work

http://www.aliexpress.com/item/lithium-battery-case/839303110.html

 

[FatOldMan]

This might be easier, if it would work

http://www.aliexpress.com/item/lithium-battery-case/839303110.html

Thanks, but I'm going to build one using 130 18650's the extra 30 holes will be used to build a seperate battery for lights & cooling fans.

 

[George S.]

I wanted to bring 12 volts to the front of the bike, or just to run 12 volts stuff from the battery. I'm hoping this works, since it will convert a higher voltage to a lower, and you can set the lower voltage. Upper voltage is 60, I'm at 36v.

 

[FatOldMan]

I wanted to bring 12 volts to the front of the bike, or just to run 12 volts stuff from the battery. I'm hoping this works, since it will convert a higher voltage to a lower, and you can set the lower voltage. Upper voltage is 60, I'm at 36v.

View attachment 4897

Looks like it will work to me.

 

[Ann M.]

What about the battery management system? Would recommend including one!

 

[FatOldMan]

What about the battery management system? Would recommend including one!

Will use 2: one 13s for the "main" battery &
one 4s for the aux. batt. chargers, cooling fans, all will fit in the case.