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Discontinued Product!

The Gerbing 12V FlexPack Battery
has been discontinued and will not be returning
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Heated Clothing Batteries
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Gerbing 12V FlexPack Battery

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Gerbing 12V 128FP FlexPack Battery

To power the new line of Gerbing jacket liners, Gerbing has developed a new, thin, "FlexPack" battery, designed to slip into the back pocket of the jackets. The Gerbing Flex Pack Battery is flexible and can shape itself to the gentle curve of your back. Its individual cells are wrapped in an abrasion-resistant Kevlar layer, and the long battery lead makes connecting easy. Plus the FlexPack Battery features a wireless remote control with 3 heat levels and the capability to recharge while riding or from an AC wall plug.

Integrates seamlessly with the Gerbing 12V Heated Jacket Liner.

The 128FP Battery Kit comes complete with FlexPack Battery, wall charger, one remote control, and Gerbing's Intelligent Power Management Control (IPMC). The IPMC works only with the 128FP battery and serves multiple functions.

  • It receives and processes the control signals from the remote controller
  • It directs power from the battery to the jacket when you're not connected to a bike
  • And it directs bike power to the jacket when connected to the bike, and simultaneously directs power back to the 128FP battery to recharge it as you ride


  • 13.25" x 8.75" x 0.875"

Note: Flex Pack Battery is intended for use with a jacket liner only with a total power output of 10 amps and will not work with Gerbing portable or permanent temperature controllers.

WARNING: It is important that you charge your battery regularly and that you maintain at least 25% of your battery power when not in use or left idle. Batteries must only be used with products with an amp rating less than the maximum capacity output rating for the battery. In the case of Gerbing's 128MV and 128FP batteries, that would be a maximum discharge rate of 8amps. Lithium-polymer battery packs can be recharged at state of discharge, without memory effect.

Product Style RevZilla Item # Manufacturer Product # Availability
Gerbing 12V FlexPack Battery 811392 BATLI128FPKT Out of Stock


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Gerbing 12V FlexPack Battery 3 5 3 3
Lazy design work I'm not knocking them any points for the size and weight of the pack. They're using the right battery technology, and I wouldn't want the battery life to be any less than it is... so heavy or not, it needs to be. It is what it is. The thing that chaps me is how badly the simple things were done. The battery and control module connect through two pigtail cables of roughly the same length. This puts the connection between the (separate# battery and control module zipper pockets #essentially inside the jacket shell#. This makes charging it a totally unnecessary pain in the butt. If one pigtail was longer, the connector could live in one or the other zipper pocket. Simple. Lastly, the control module has two buttons so you can use it if you misplace the remote. Good idea - terrible design. The buttons sit high off the housing and are very easy to push. This means when you put it on, take it off, hang it with your other coats, or brush up against just about anything, it turns itself on. When you take it out of the closet to wear, the battery is dead. It happened to me too many times, and now I'm always hitting the off button on the remote to make sure it didn't turn itself on #usually the lowest setting, so you wouldn't notice it#. If whoever designed this made a cardboard mock-up, they would have known the pigtail problem. Lazy. The control module just needs a re-spin ...and for how much these things cost, we should all be sent a replacement! I design products for the military, and this kind of shabby design work frosts me #literally, in this case). I recommend the product because it's super nice to be warm. But if there were any other options, I'd take 'em. February 21, 2015
Great battery life to keep toasty in the cold I bought this battery pack for my daily commute on an xr650L which does not have the power to handle the Gerbing 12v troller for my gloves. It works perfectly for my commute (2 hours a day) for powering my Gerbing 12v gloves at full power. The remote key fob is a nice feature, but I still opt to use the analog heat troller with a dial since it's smaller and can fit in a jacket pocket. Battery is about the same size as a large note pad, fits easily in a backpack with just enough of a lead to stick out of a zipper to connect to your jacket or whatever you are wanting to power. My only gripe is I wish the lead was half a foot longer, but I realize a lot of people will buy this as the insert for their jackets and won't need an extra long cord. January 27, 2014
Great all in one unit. I have been using this for a month now and have figured out the in's and out's about it. First thing ! if you have a gerbing product and use a controller you wont need it . this unit has a controller with it so all you need on the bike is the power cord. Recommend buying a 24" extension cable to go from the battery pack to the ipmc in the zippered pouch #if you have a liner jacket# and a Y splitter if you running pant's # you can only plug jacket to ipmc due to 6 amp max# pants will be full heat this way. The battery will keep you warm walking around for an hour or so based on setting. There are many way's to connect it so if you have a controller already you can use it and when you get off the bike you just switch the connecter to the battery pack. BTW there is buttons on the ipmc to turn it on and off without the remote. So far I have used it about 30 times in the house, walking to the park , riding bike to the coast and walking on the beach "WARM" plug back into the bike and staying warm while the battery pack charges back up. all and all the only complaint I have is the weight on my back it's not bad just like wearing a back protector. But you can take it out and still use the ipmc hooked to the bike normally . March 12, 2013
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