5kg battery in my jacket?

[cwah]

Hello,

I have this crazy idea to have my battery in my jacket:

http://www.ayegear.com/products/ayegear-j25-jacket

I already ordered the jacket. It should arrive within the week.


I'm planning to use 18650 cells, and because I have access to spot welder I can decide on the shape and emplacement of the cells. Most likely on the back for now, but maybe on the front as if I fall having it on the back could be dangerous.

As safety is a very important factor, I may not order NCA cells and maybe just go toward NMC. Maybe NCR18650PF or LG MH1.

5kg of 18650 cells is about 100 cells. Which is a significant amount, but still take small space. Once received, I'll place 5kg weight to see how it feels during the day, as trial.


ps: If the jacket doesn't work for cells, I can still use it to carry my laptop so no worry for a purchase for nothing!

 

[Deleted member 4366]

It's worth a try, but be careful with your wiring. The jacket is flexible, which will bend any wires that join cell-packs. Copper doesn't like to be repeatably bent. It will eventually break. Make sure that it's not possible for broken wires to short out on anything that would cause them to catch fire. Pay attention to the balance wires.

 

[SRS]

Might a small extinguisher be a good addition?

 

[trex]

cwah, you are mad, mad...
Why do you want to carry 100 cells when 52 cells will do?
Get a conventional battery, pop in 4 extra rivnuts, cover it with a blanket if you like and lock it like most ordinary people do.

 

[flecc]

I have this crazy idea to have my battery in my jacket:

Subject to the safety and wiring concerns, this is certainly the most sensible and natural way to carry weight, close to the body.

I'm sure a high proportion of our members carry far more than 5 kilos of extra weight against their bodies!
.

 

[trex]

you'd need a fuel cell that can convert body fat into electricity like this one:

http://www.theregister.co.uk/2008/10/06/pseudo_electrocyte_tech_proposal/

 

[Deleted member 4366]

That would be brilliant. Any time somebody grabs hold of you and you don't want it, you give them the full 600v like the electric eel does.

 

[EddieH]

you'd need a fuel cell that can convert body fat into electricity like this one:

http://www.theregister.co.uk/2008/10/06/pseudo_electrocyte_tech_proposal/

Brilliant, I could cycle to the Pub and claim I was just topping my battery up.

 

[Fordulike]

Don't blame us if you end up getting zip tied by CO19 and sent off to Guantanamo Bay

 

[KirstinS]

The line between madness and genius is a fine one

And I love cwah ideas- some are a bit bonkers. But this has potential for genius if well executed

 

[Nealh]

Cwah you are a crazy person, if it works out just don't get shot.

 

[SRS]

Cwah, would it not be safer to buy an off the peg e-bike and just insure it against theft.

When it get nicked, claim and get another one.

I am not sure that wrapping yourself up like a suicide bomber in Central London is the brightest of ideas.

 

[Wicky]

Sounds great in Winter but in Summer...

 

[cwah]

cwah, you are mad, mad...
Why do you want to carry 100 cells when 52 cells will do?
Get a conventional battery, pop in 4 extra rivnuts, cover it with a blanket if you like and lock it like most ordinary people do.

I need quick release ability on a normal battery. Unfortunately, the only one that do that are the one with 52 cells, they are not waterproof and they scream electric bike to everyone. I'm a bit ashamed every time I bring it to work and was planning to do something to fix that.. the bag sounded like a good idea until someone stole it

 

[cwah]

Cwah, would it not be safer to buy an off the peg e-bike and just insure it against theft.

When it get nicked, claim and get another one.

I am not sure that wrapping yourself up like a suicide bomber in Central London is the brightest of ideas.

Is there any good insurance against thieves? Because it seems that battery is considered as spare and wouldn't be insured. Same as if I get my wheel stolen.

 

[cwah]

For now, I am myself also wondering if that idea would work.

I need to prototype it, put 5kg weight on me and see how I'd feel over a week. Only if I feel that there isn't any problem carrying 5kg the whole day/weekend on me, then I'd consider making the battery.

So I may not do that... but if it works, I'd have the most stealthy 25mph ebike possible.

 

[robdon]

Hope it works for you cwah, you deserve some success for all your hard work, and experimentation.
rob

 

[flecc]

For now, I am myself also wondering if that idea would work.

I need to prototype it, put 5kg weight on me and see how I'd feel over a week. Only if I feel that there isn't any problem carrying 5kg the whole day/weekend on me, then I'd consider making the battery.

So I may not do that... but if it works, I'd have the most stealthy 25mph ebike possible.

Team Hybrid had an electric motored BMX stunt team that I saw at one display, and they wore the batteries with a quick release lead connection.

So it worked for them.
.

 

[SRS]

Is there any good insurance against thieves? Because it seems that battery is considered as spare and wouldn't be insured. Same as if I get my wheel stolen.

4 or 5 years ago, thieves broke into a bike shed after following me home.

They stole the Rockshox suspension forks, left everything else. My insurance company paid for a new pair. From memory, several hundred pounds.

The battery is an essential and integral part of any ebike. I see no reason for an insurer not to offer theft cover.