Difference between pages "Connectors" and "DIY-battery"

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(Created page with "Connectors are everywhere on an e-bike and are super important to being able to maintain and expand your e-bike. A brief list of common recommended connectors is as follows: *XT90-S: 2 pin, 90A rated. Soldered. Very good connector with anti-spark functionality that reduces/eliminates sparking and erosion of the contacts upon repeated connections. *XT60: 2 pin, 60A rated, Soldered. Very good connector but no anti-spark functionality and hence best only for occasional...")
 
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Connectors are everywhere on an e-bike and are super important to being able to maintain and expand your e-bike.  
'''Intent:''' This page is created as a guideline whether if assembling/designing your own battery pack is a viable option compared to buying a pre-made battery.
Prerequisite software/knowledge (before building a pack)


A brief list of common recommended connectors is as follows:
Ability to draw 2D schematics/diagrams. - you need to do this if you are trying to make a pack with a certain dimension constraint. use of CAD is encouraged.


*XT90-S: 2 pin, 90A rated. Soldered. Very good connector with anti-spark functionality that reduces/eliminates sparking and erosion of the contacts upon repeated connections.  
You know how to use the [https://ebikewiki.com/index.php/Simulator|Grin simulator] - You need to know how much current your battery will be drawing.


*XT60: 2 pin, 60A rated, Soldered. Very good connector but no anti-spark functionality and hence best only for occasional disconnections.  
Ohm's law. Since we are not going into AC power, complex number/angle is not needed.  


*MT60: 3 pin, 60A rated, Soldered. Good connector for phase wires.
Ability to read battery cell datasheet. - As the wiki page becomes older, more cell info will be added to the page; but for cells that are not on this wiki/internet in a simplified format, reading datasheet will be necessary. [https://www.batteryspace.com/prod-specs/11514.pdf LG M50LT datasheet, from batteryspace], [https://www.batemo.de/products/batemo-cell-library/lg-energy-solution-inr21700-m50lt/ Simplified datasheet of M50LT, courtesy of Batemo.de]
 
*Anderson Powerpole: 40A rated, Crimped. Very good connector that has a sacrificial tip designed to take the wear of sparking without eroding the main contact area.  
 
*JST-SM: Low current rated, Crimped. Good for signal lines like throttle and very low power like LED turn signals and such. Good connector for hall sensor wires.
 
*Higo: An over-molded type of connector that can't be easily used in DIY as you have to splice to a pigtail to use one. Water proof and very good, comes in many formats and current ratings including combined hall/phase wires for motors. Highly recommended to get if you can find a controller and accessories already using them.  
 
 
Connectors we don't recommend:
 
*Bullet connectors: These are generally only good for around 15A, often have poor tolerances and can come loose with vibration and melt even when used at rated current levels.
 
*Spade connectors and terminal blocks: Often found on the phase wires of cheaper motor kits, these connectors often are of poor quality and melt under the currents.

Revision as of 08:31, 13 September 2023

Intent: This page is created as a guideline whether if assembling/designing your own battery pack is a viable option compared to buying a pre-made battery. Prerequisite software/knowledge (before building a pack)

Ability to draw 2D schematics/diagrams. - you need to do this if you are trying to make a pack with a certain dimension constraint. use of CAD is encouraged.

You know how to use the simulator - You need to know how much current your battery will be drawing.

Ohm's law. Since we are not going into AC power, complex number/angle is not needed.

Ability to read battery cell datasheet. - As the wiki page becomes older, more cell info will be added to the page; but for cells that are not on this wiki/internet in a simplified format, reading datasheet will be necessary. LG M50LT datasheet, from batteryspace, Simplified datasheet of M50LT, courtesy of Batemo.de

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