Hailong G56 Case / BMS fittment

Magsy

10 mW
Joined
Jul 17, 2016
Messages
20
Location
South Wales
Picked up a couple of the Hailong cases 'G56'.

56 cells with holder and a 52v battery indicator Here

I was excited to build in this case because it looks like they had fixed most of the quirks and I thought it would be fast and easy. It has a better mounting plate and the holder allows you to make a nice 14s4p pack.

However, there is no space for a BMS. I assumed it went at the top and the slight bulge in the back of the case allowed for a thin one.....but no.

I can't seem to find any pictures of one open with a BMS installed.

I did actually glue all the cells and by gaining a few mm over the holder, it is kinda possible to put it on top but it is so tight it feels like an accident waiting to happen.

I have very reasonable size BMS, either JBD/LTT one which is about 100mm x 60mm x 10m or a Neptune 15 which is even smaller.

There is perhaps a sliver of room at the side of the battery for something about 50mm x 50mm x 8mm but I struggle to find a BMS to fit in there.

Anybody have experience to share? Thanks
 
I did but m sadly had to swap to a cheaper less functional BMS that was smaller :(

I actually bought three until I got one in there!

In the end, devoid of any useful information from the seller/internet on this case, I decided that they must have intended for the BMS to be on the side.

It’s still a BMS with balance and ovp/ocp/lvp etc but I lost Bluetooth. Fit is tight but ok.





https://youtu.be/WTGE-P2Nwcc
https://youtu.be/esKZjXHhrMk
 
Wow ! Superb job on the nickel strips pattern and spotwelding !
Matador
 
Very cool.

It seems you used this kind of BMS: https://www.aliexpress.com/item/1005003740153567.html
I wonder if 4 pins inside have serial connection...

Anyway, here is the cell layout.
https://e4bike.ru/page/battery-shape-configurator?c=71800501404160152457154504166550191510258177259130194 I haven't looked into cells connections yet..

I found nice diagonal slotted nickel strips that could be used here (since I think no one sells this case with precut strips).
https://www.aliexpress.com/item/4000337729015.html
0-15x18-5MMx23MM-Pure-Nickel-Belt-2P-18650-Lithium-Battery-Spot-Welder-Nickel-Strip-Nickel-Li.jpg_Q90.jpg_.webp
 
dzid_ said:
Very cool.
It seems you used this kind of BMS: https://www.aliexpress.com/item/1005003740153567.html
I wonder if 4 pins inside have serial connection...

I don't think that BMS has balance capability. No balance spec.And you're not getting bluetooth on it.

I have a couple of the Hailong-1 cases. I am using a BMS that fits in the side, sold by Annpower. It does have balance capability. Now I need to find one with an on-off switch to fit in the Hailong-2 case.
 
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