Does such a device exist ??

[Ebiker01]

For warming up the battery:


Electrically heated battery cover (powered by a small battery, not outlet, allthough outlet powered is okay as well).

I am outsourcing a heated shirt and will see if i can take the heating elements out and have them stitched/attached/glued underneath the regular neoprene battery cover which i don’t like b/c is too bulky and not warm enough), that’s why a heated blanket for the battery would be thinner and easier to use.


I would heat it at home 20-30min. Before riding if is chilly out and possibly also keep it on to maintain warm temp.

Would be ideal to have it wired directly to the controller.

Well if such an item doesn’t exist ( and i searched amazon, alibaba, etc) then feel free to patent it and invent it b/c i need one, and others will need it too.


And no worries i won’t sue for taking my idea...i already have to many...


It looks like a Lion battery really likes to be warm (70-75F degrees) in order to run at it’s best performance. That also extends battery life and keeps the cells chemistry in pristine cond.

They do that in F1 e racing and with the Tesla cars( there is a preheat option that prepares the cells, not a blanket ? of course ..) and also in e motorcycle it is done like that.

 

[tomjasz]

I use Aliexpress sourced heat pads and controllers and power from my Battery.

 

[Ebiker01]

I use Aliexpress sourced heat pads and controllers and power from my Battery.

Thank you for the suggestion.

I searched under “heated blanket, socks, shirt, vest...” forget about “pad”.
It will come down to having it narrowed down to the correct size for my specific battery dimensions.
Q - how do you power it from the battery ? What type of ebike is it ? I guess if i can’t do it like you, i will have to get a “battery operated heating pad”.

 

[6zfshdb]

Consider the efficiency of the system you are building. If the energy consumed by the warming device exceeds that gained by warming a cold battery, the effort is wasted.

Lithium ion batteries generate some internal heat during discharge. Unless you ride for long periods in extremely cold conditions, warming the battery to room temperature before riding and covering with a simple, non heated insulating blanket may be as efficient as a heated method.

 

[tomjasz]

Thank you for the suggestion.

I searched under “heated blanket, socks, shirt, vest...” forget about “pad”.
It will come down to having it narrowed down to the correct size for my specific battery dimensions.
Q - how do you power it from the battery ? What type of ebike is it ? I guess if i can’t do it like you, i will have to get a “battery operated heating pad”.

I have a couple of batteries with 5v USB ports.

Consider the efficiency of the system you are building. If the energy consumed by the warming device exceeds that gained by warming a cold battery, the effort is wasted.

Lithium ion batteries generate some internal heat during discharge. Unless you ride for long periods in extremely cold conditions, warming the battery to room temperature before riding and covering with a simple, non heated insulating blanket may be as efficient as a heated method.

Having run with 5V heat pads for several Minnesota winters, think polar, the loss of power due to severe cold is far greater than the loss to keep the battery temp up.