Electric Bikes - Help! Case for ebike battery
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11-12-09, 07:50 PM
So my AmpedBikes ebike kit has been sitting in a box for almost two months waiting for a battery. Well finally my money has come in and I'm about to buy from Ping Battery, considering AmpedBikes and many others have told me they sell a solid product.
It appears that the battery comes pretty bare. I currently have a rear rack which can hold about 130lbs on my folding Downtube Nova, but I'm not sure what to use as a case. I'd like something rain proof, not too heavy (some have suggested old bullet boxes from an army store). I'm not a great crafts man and want something simple I can take in after I get done with the bike, and charge it.
I was thinking maybe a tool bag, small enough, but water proof with some cut out holes to connect it up.
Any suggestions would be great, maybe any ideas about putting the speed controller together with it too!
11-12-09, 10:36 PM
One suggestion is to have a lockable case.
The point of the lockability is not to protect the battery from theft, but to keep it closed so that people don't tamper with it. The case is lockable in two ways: (1) the lid can be kept locked and closed, and (2) the case will be locked to the bike and cannot be picked off. You would take the battery out of the case, then put the battery in your briefcase, and take it with you to your office.
My 2 cents.
11-15-09, 07:10 PM
Well I plan to take the battery in with me whenever I lock it up.
11-16-09, 03:11 PM
I have a small rack top bag mounted to a front rack on my bike. It holds my battery and controller as well as the battery for my Magicshine. I have a E-Zee front hub motor, so I went with the bag on the front rack as being a cleaner looking installation.
The bag seems to keep the batteries dry and protected. I also take the batteries inside with me in the winter.
11-20-09, 07:33 AM
I carry my 48v/20ah in a backpack. Considering its worth almost as much as the bike and kit I want it with me at all times. You can find some great backpacks that are setup with wheels and a handle as well. These supply a frame for the battery as well. Very sturdy in most cases. Aside from that I use a toolbag to containt the battery and BMS itself. I scotchguard both bags and carry plastic bags in my pack in case of rain. Because I have my battery in my backpack I can also just put on my pack and throw my raincoat over the top of everything without a worry in the world. When the rain stops I shake off my coat and put it back in my bag.
V-power sells batteries with cases. Aluminium I believe. Ping should also offer some cases for smaller packs. One thing I have done in the past with smaller packs is adapted igloo coolers to topeak racks. Install an outlet for power and charing, mount the cooler and you have a water proof case as well as an easy to carry case. I dont recomend rack mounding a 48v/20ah lifpo battery though. Its going to destroy your ride and your bike and rack pretty fast :)
11-23-09, 02:05 AM
Here's how I made my battery case:
I dont recomend rack mounding a 48v/20ah lifpo battery though. Its going to destroy your ride and your bike and rack pretty fast :)
Er. Such a battery weighs what, about 20 pounds? That's well within the weight limit of almost any rack, excluding seatpost mounted ones. I would certainly rather have 20 pounds on a rack rather than carrying it on my back.
The Arkel Tail pack is just the right size for a 48V 15Ahr Pingbattery with a bit of extra padding, and velcroes nicely to seat racks. Seatpost racks might like a bit of triangular strut bracing concocted from the seatpost up to the rack for a dual suspension. I haven't noticed my Ping overheating in the Arkel but I don't run deep discharges on max amp drain rates... I use an Axiom Odyssey MTB pannier rack with a concocted strut for extra support - you can fashion one from electrical conduit.
I know how you feel. I have been flaffing about for the past year trying to get a bag I am happy with. Enter my 4th purchase and I think this is finally going to do the job for me.
I have a 20ah 36v battery and crystalyte controller in the bag. You can use the rack bag and easily still attach panniers with the matching rack I went for.
11-26-09, 01:21 PM
RayB, that looks almost identical to my setup. Completely recommend this. The Topeak bag is waterproof enough, fits my Ping 36v15ah and Amped controller with room enough for my keys, work id, fleece gloves, other small odds and ends. When I lock the bike, one lock cable goes over and through the handle of the bag tightly, so it would be a chore getting it off. Obviously, not enough to prevent a true thief, but nobody can walk/ride off with it.
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