Looking for tool battery socket

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  • Updated 8 months ago
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I need an EGO tool battery socket for an e-bike project.  Anyone know where to get one... or have a dead tool for sale?


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Raylo

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Posted 9 months ago

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szwoopp, Champion

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I do not have a dead tool, but scavenging in that manner is probably your best route to getting a battery socket.  There are several examples on this board of projects done in that manner.

Ebay or craigs list type of purchase is probably your best best.
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Raylo

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I just remembered I have a spare EGO charger.  I have a big EGO charger that came with my EGO snow blower so I don't really need the small one that came with my leaf blower (that I purchased a few years before the snow blower).  So I can maybe try to deconstruct the smaller charger for its socket.
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Blue Angel, Champion

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Exactly!
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Raylo

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Amazon has used EGO chargers like mine for ~$20.  New ones are ~$40.  I'll take a quick look at fleabay for a broken tool but they can't be much cheaper than ~$20.
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Raylo

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Fleabay has broken blowers for $29 plus $29 shipping.  Looks like the charger is the way to go.
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Blue Angel, Champion

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The main reason you’d want to use a tool as a donor isn’t price, it’s because the tools have a spring loaded release cam and floating electrical contacts. Not only does the cam make battery removal easier, it also locks the battery in place. Combined with the floating contacts, the cam serves to reduce fretting wear between the battery and tool electrical connections.

Food for thought. ;-)
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szwoopp, Champion

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mmmm floating electrical contacts

Image result for homer mmm
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Raylo

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Good point about the positive latch, guys.  I am playing with prototyping a socket on my 3D printer. I am including the side ramps that snug the battery into the socket but I have to think about a way to positively secure the battery from backing out.  There is always duct tape.  :-)  In any case, no hurry here what with the Polar Vortex and all.
(Edited)
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Raylo

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Hey guys, I finally got around to this.  I designed a battery socket for my e-bike and it works great (so far).  Time will tell how it holds up.  See the parts on Thingiverse:  https://www.thingiverse.com/thing:3415459
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szwoopp, Champion

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nicely done Raylo
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Raylo

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Appreciate it.  Lot of work and iterations doing the 3D print.  More work than building the bike.  Here is a better picture:  
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Blue Angel, Champion

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Nicely done! Please share the motor/control setup when you’re done!
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Raylo

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The motor and controller is an off the shelf kit Tongsheng TSDZ2 torque sensing mid drive (drives the chainwheel). Those clever Chinese.  It has 4 levels of assist based on a strain gage measuring the force being applied to the pedals.  It can also be operated purely on a thumb throttle.  Many vendors sell these with some providing custom firmware.  I got my kit from these guys: https://www.eco-ebike.com/
(Edited)
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Blue Angel, Champion

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Very cool looking stuff! Nice that the 52V system accepts up to 58.8V, perfect for the Ego batteries!
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Peter Wachter

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I am truly thrilled to see Raylo's EGO Bike and the dialog to solve the docking socket. There's talk about a sprayer too. With blower and mower as inspiration, I too am conjuring up ways to employ EGO's phenomenal power platform. Legal liability and competitive considerations aside I was even thinking to ask if EGO could provide the docking interface. An unused charger? "Why didn't I think of that!" It's great to see the creative power of the community coming together. The Maker Movement is rooted in open source. Great job Expert Hack Raylo and thanks for sharing on Thingiverse.
(Edited)
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Raylo

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I am not the first to use these on an e-bike.  I didn't know when I bought my kit that EGO have quite a cult following in the e-bike world.  They are apparently made with very high quality cells, have solid BMS and good ventilation for cooling.  People have used sockets from broken tools or from the chargers or just directly plugged contacts into the batteries.  But I could not find a previous 3D printed socket like mine.
(Edited)
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Blue Angel, Champion

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Well when you get yours done please post some pics!

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