"Little Frog" case - controller size

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pawepie   100 mW

100 mW
Posts: 39
Joined: Jan 08 2018 9:42am

"Little Frog" case - controller size

Post by pawepie » Jan 30 2018 8:46am

Hello fellow enthusiasts!
I'm trying to build a 52v "Little Frog" case for use in a Q128c motor (am communicating with BMSbattery) and am wondering if anyone has this case and can let me know the inner dimensions of the controller case. I'm wondering if I can find a suitable controller to fit in the case and not have to mount "externally".

Will be posting what I was able to dig up from the internet this afternoon. Wendy from BMS doesn't have access to the case to provide dimensions. I've seen other sellers on Alibaba sell a 52V version of the case, so I'm hopeful/excited for this. Apparently it will be able to fit 14s3p.

pawepie   100 mW

100 mW
Posts: 39
Joined: Jan 08 2018 9:42am

Re: "Little Frog" case - controller size

Post by pawepie » May 12 2018 6:21pm

So, I was able to get the Little Frog made with 52v 14s3p by BMSbattery for $250 USD and NCR18650PF Panasonic
batteries. I will be replacing the BMS with a 60A bluetooth BMS (will set to 30A max) to charge to 56v 80% SOC for battery longevity. Will get the weight up when I get a scale. Photos below via google photos. Hope this people make decisions around the product/solution.

I have it on my mountain bike temporarily, but purchased it for my commuter. It's a little bouncy in the back for my mountain bike (I took it on the trails once) - good for commuting though and convenient to carry around to take into work.

It can fit a PSWpower 20A sinewave controller, and a S06 controller (BMSbattery), but by calculations, not the s09 controller - which I wanted the most. It doesn't fir the external Magic Pie controller (see the photos to understand). It needs to fit the metal part which the plastic shell covers. Happy to take and share measurements if anyone needs them.

https://photos.google.com/share/AF1QipM ... JGT2Y5YWtB

pawepie   100 mW

100 mW
Posts: 39
Joined: Jan 08 2018 9:42am

Re: "Little Frog" case - controller size

Post by pawepie » May 12 2018 7:11pm

maximum controller dimensions: 118x57x67mm :)
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zro-1   1 kW

1 kW
Posts: 360
Joined: Jul 31 2012 9:09am
Location: Atlanta, GA
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Re: "Little Frog" case - controller size

Post by zro-1 » May 13 2018 4:46pm

I always though that "Little Frog" case looked interesting. Thank you for posting the pics of the assembly and component layout.
~01~

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