











⚡ Power your hustle, stay charged and warm—wherever work takes you!
The Bosch GAA12V-21N 12V Max Portable Power Adapter transforms your Bosch 12V max battery into a versatile power source delivering 2.1 amps for fast charging mobile devices and powering Bosch heated jackets. Lightweight and jobsite tough, it features a metal belt clip for hands-free convenience and an on/off button for controlled charging sessions—perfect for professionals who demand reliable power on the move.

























| ASIN | B07Z5R8CRS |
| Batteries Included? | No |
| Batteries Required? | No |
| Color | Blue |
| Customer Reviews | 4.0 4.0 out of 5 stars (225) |
| Date First Available | October 15, 2019 |
| Finish | Brushed |
| Included Components | (1) GAA12V-21 12V Max Portable Power Adapter |
| Item Package Quantity | 1 |
| Item Weight | 2.56 ounces |
| Item model number | GAA12V-21 |
| Manufacturer | Bosch |
| Material | Blend |
| Mounting Type | Wall Mount |
| Package Dimensions | 5.51 x 4.13 x 2.09 inches |
| Part Number | GAA12V-21N |
| Pattern | Solid |
| Power Source | hand_powered |
| Shape | Rectangular |
| Size | One Size |
| Special Features | Fast Charging,Portable |
| Style | Classic |
T**.
Nice.
Works as shood!
P**T
Phone charger
Must have you have Bosch tools, but one of these you could keep your phone charged
K**N
Good product
Works great thank you!
C**V
Worst
Cannot charge at all. It turns off immediately. And if you don't register as a user, the warranty will not be extended. I buy a lot of BOSCH products and I don't want to have to register every time. Worst.
J**N
Works great
This is an awesome battery power bank. I use this almost everyday to keep my phone charged and it's perfect because I'm never tied to a wall waiting for it to charge. What I really like is I already have the batteries and drill batteries charge way faster than my other power banks. I highly recommend this product.
G**P
Great for projects and testing
I don't have the jacket this is intended for. Instead, I use it to test LED strip lights, cameras, trailer lights, and other 12V accessories. I've made a few adapters and it's part of my travelling toolbox. It's way more convenient than carrying around a power supply and extension cord.
A**A
Needs improvement
I like Bosch tools and own their 12v and 18v tools, but this one is not their best effort…This charger lacks a led light that tells you it is working or a battery level meter to tell you if battery is full or not. With battery in and wire connected to device you are attempting to charge (phone for example), you still need to push a red button to get it working, but there is no light or any mechanism to tell you it is turned on.
J**C
Works For My Fishing Light
I have some 12v Bosch tools, with several batteries. I used this adapter to plug in a green fishing light to attract fish at night. Certainly not it's intended use, but it works great for me. Lightweight and very portable compared to other battery options.
J**S
Very useful adaptor for the Bosch 10.8V/12V system, BUT be aware of the 2 hour cut-off timer! I was doubting the origin of my 3.0Ah & 6.0Ah batteries, until I discovered this little gem of info in the Technical Information on the Bosch website 🤦. Give it ~30s then press the button to continue 🙄.
A**R
My first one was broken, this was a replacement, easy to use
A**O
I have Bosch impact drivers and cordless drills, all running on 12V batteries. Sometimes, while I am at a work site and I run out of battery power, this will be useful to charge up my stuff. I can use the batteries that came with my power tools, plug it in and away I go
E**I
Stopped working after a couple of usages
C**.
Compacta, ligera y poderosa. Buen amperaje carga los dispositivos muy rápido. Lo malo: Solo le alcanza para una carga al celular. Que no es tan malo porque es un Motorola Droid que no cualquier pila o cargador de bajo amperjaje lo carga. Aunque esperaba mas por ser una bateria de taladros y otras Power tools. 5 estrellas de todoa modos. Es un Bosch.
Trustpilot
1 month ago
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