lightweight portable battery pack?

[audiocontr]

I'm looking to create a portable solution for a set of heated motorcycle gloves. I have a family member with a health condition that this will allow them a bit more mobility, plus the ability to hop in the back of the pinz without issue =)

The gloves pull 2.5 amps at max temp

I was looking into small light weight 5amp/h 12v batteries which should theoretically power the gloves for up to 2 hours, plus i can recharge via cig lighter adapter. Would something like this work?

http://www.amazon.com/PowerAll-PBJS1200 ... SEN244AQ92

Do any of you have any experience in small light weight battery packs? Is there something Im overlooking?

[pcolette]

I have a similar unit (forgot the brand) and I'm amazed at the amount of power it has. Only used it once to start a UTV that had a dead battery and it worked great. Mostly I use it as a backup for iPad's and phones. I'm no electrical engineer but I don't see why it wouldn't work for your application.

[Jimm391730]

For small and lightweight, Lithium is the way to go. You might consider looking at 12V portable tools (think drill or screwdriver) as they come with a dedicated charger for the lithium chemistry. Most any sealed lead acid (AGM or Gelled) will work - easier to charge, as you mentioned, but more weight.

Also, AGM/Gelled do not like deep discharges (since you will be likely to run the gloves until the battery is run dead). Actually, almost no battery likes this but tool batteries are expected to be run to depletion as a general statement. With either battery it would be best to recharge as soon as possible.

Of course you could eliminate the battery while in the Pinz... just add a jack to a 12V source.

[TechMOGogy]

Here in Kanada some people use rechargeable ski gloves
Last 4-8 hours
Eg http://www.amazon.com/gp/product/B006GV ... OT7O73POYX

[audiocontr]

damn gloves are cheaper than everything ive found =)

Thanks all

[ako]

You probably have the answer you were looking for, but a small power supply used for bicycle headlights could easily clip onto a belt or whatever :

http://www.dx.com/p/water-resistant-rec ... oTB_Pl97IU