The Problem of Battery Placement

[cal3thousand]

Some scrape wood made this in a 17" frame. 12s4p or 24s2p with room left over. Solid as a rock with the top block. Can get in or out in seconds.
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Same 12 4s packs as above. Made this from an old aluminum for sale sign. Not quiet as solid as above but I flipped the bike when I hit a large dog and none of the batteries got damaged. Handles almost as good as the one in the triangle.

I couldn't care less what it looks like as long as it's functional.

wish they made 6s hardcases, would save me so much hassle. they look tough enough to just gaffa tape to the frame.

That would be a huge help!

 

[John Bozi]

Group buy
http://endless-sphere.com/forums/viewtopic.php?f=31&t=57623&p=859305&hilit=additive#p859305

I'm about to do a 12s 5Ah top tube pannier. Attempt number three. I'm hopeful the parts on order come the right size this time. If so, the 3 4s bricks and a controller will be in something like this

That bag is sold by many, with dimensions ranging from 150mm to 170mm long, but still the 139mm Bricks won't fit. I have one on it's way with express postage claiming to be 180mm long. Maybe 139mm will fit in this one.

I have also looked at these, thinking I could buy two and just pair up the larger bags at 22x15x7cm each. If that is to be believed, 10Ah at 48V would fit.

Both are cheap on ebay.

The problem with cheap bags is there strength. I wouldn't hold batteries within them. I would rather sling everything in place, then use the bag as a cover. Something like that. Eyelets stamped in can be used for cable entry, and looping cable ties through. You can quite easily fill a bag then strap up it's contents. I'm still exploring options, but think I could offer bikes to friends with such an arrangement. 4s Bricks in bags cable tied up through eyelets. The problem is the exaggerated size's of the bags. They just keep coming wrong.

I've been running 12s with panniers for months.

all the bags I find yes are not your perfect dimensions. With mine I just popped holes where the wiring is permanently hanging out. I have bought another two of these cases to be able to just swap the case over. I charge the batteries while they in the cases. cell monitors are in the mobile phone pouch above. quick to check and easy to hear.
more pics https://www.facebook.com/media/set/?set=a.10152149607104845.1073741826.531544844&type=3