somfy Rechargeable Battery Pack for External Battery Wirefree Motors - Year-Round Power for RTS Motorized Shades, Curtains, Awnings - Charge Once a Year - #9021217

Best replacement for AA battery packs that drive powered shades. Holds charge for extended periods - I have tested them up to three months without charging. Also very easy to install.

You have to pay Somfy for the usefulness of the product (these are overpriced for what they do). I'm an older guy and I didn't want my spouse, when I'm gone to struggle with the battery changes on our electric blinds. So, here's the solution. These units will work. To keep from mounting them, instead, I put a decorative Ikea shelf over each window (4). My wife gleefully shopped for nice pictures for the kitchens (2) and made the kitchens pretty. Here's where this Somfy rechargeable unit fits in... it can also just lay on the the Ikea shelf, out of sight. When the battery needs recharging, just unplug and charge it. When done, place it back on the shelf and plug it in. Simple... even us older folks can do it. That's one more thing that I won't have to "worry" about if I become disabled (it's more strenuous to do as you age). If you're young, healthy and strong, you can still used the tubes (which are connected in parallel to last two years instead of one).

Bought this for our Solar Blind was.not direct fit but works perfectly.

We have 12 sets of blinds and love using them. But hated buying new batteries all the time.This rechargeable battery is terrific! We're replacing all of the old style with these. Easy to install and rarely needs recharging. Wish we'd known about them sooner!

I love that I can charge these instead of constantly replacing batteries. They replaced a round tube and they have new brackets included to hang them since they’re a square tube. I hope they hold a charge a while. I’ll update on that if they don’t

Found this description on AVOutlet.com: Somfy Rechargeable Lithium-ion External Battery Pack #9021217 Specifications• Rechargeable Lithium-ion Battery 2600mAh• Output Voltage 12 Volts DC• Dimensions: 9.8125" x 1" x 0.9"• Weight: 0.75lb• $63.95 eachCouldn't enhance on any of the answers so giving it a go here.

We use this battery for our blinds. The battery it came with needed to be replaced. Called a blind and drapery store to get a price for replacement and Amazon was the best price.

Don’t need to buy16 regular batteries any more for my electric blinds have 4 bought 1 to see how they work will buy 3 more later.