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Bosch

Bosch GXS18V-18N27 18V Starter Kit with (2) CORE18V® 12 Ah High Power Batteries and (1) 18V 16 Amp Battery Turbo Charger

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Availability: In Stock.
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Arrives Sunday, Jun 7
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Size: 2-Pack (Turbo Charger)


Style: 12 Ah


Features

  • 12 AH HIGH POWER BATTERY PERFORMANCE: Delivers equal power and at least 50% more runtime than the core18v 8 ah battery
  • HIGH-POWER, TURBO CHARGER: Provides fast and faster charging with optional power boost mode
  • BATTERY EFFICIENCY: Features three layers of enhanced 21700 cells for greater battery efficiency
  • BOSCH-EXCLUSIVE COOLPACK 2.0 TECHNOLOGY: Cools the battery and helps provide longer battery lifetime compared to non-coolpack bosch 18v batteries
  • CUTTING-EDGE BATTERY DESIGN: Includes copper end plates, power rails and a flexible circuit board, offering reduced resistance and increased efficiency
  • EFFICIENT OPERATION: Weighs only 3.04 lbs., providing performance comparable to larger and heavier alternatives
  • COMPATIBILITY: Engineered for 18v and compatible with bosch 18v tools and chargers
  • 16-AMP CHARGING CURRENT: Fully charges a spent core18v 12 ah high power battery to 50% in 22 minutes and 80%, in 36 minutes
  • POWER BOOST MODE: Boosts electrical current charging to 50% in the shortest time
  • ACTIVE AIR-COOLING: Uses two fans to cool battery, optimizing charging time while protecting batteries from overheating

Description

This Bosch 18V Starter Kit delivers the extended runtime and turbo charger speed necessary for tackling brutal applications. The Bosch CORE18V® 12 Ah High Power Battery delivers equal power and at least 50% more runtime than the CORE18V® 8 Ah battery, powering high-demand applications. The GBA18V120 features three layers of enhanced 21700 cells for greater battery efficiency. The battery has Bosch-exclusive CoolPack™ 2.0 technology, which cools the battery faster and helps provide longer lifetime compared to Bosch 18V batteries without CoolPack™ 2.0. With its cutting-edge battery design, it offers reduced resistance and increased efficiency. The GBA18V120 is compatible exclusively with Bosch PROFACTOR™ tools with BITURBO Brushless™ Technology, for power comparable to the most demanding corded tools; compatible with Bosch 18V chargers and the AMPShare™ System; not compatible with Bosch non-PROFACTOR™ tools. The air-cooled Bosch GAL18V-160C can fully charge a spent CORE18V® 12 Ah High Power Battery to 50% in 22 minutes and 80%, in 36 minutes. It features an optional Power Boost™ mode, which boosts electrical current charging to 50% in the shortest time with compatible batteries.

Number of Batteries: 2 Lithium Ion batteries required.


Brand: Bosch


Battery Cell Composition: Lithium Ion


Battery Capacity: 12 Amp Hours


Recommended Uses For Product: Power Tool


Manufacturer: ‎Robert Bosch Tool Corporation


Part Number: ‎GXS18V-18N27


Item Weight: ‎8.91 pounds


Product Dimensions: ‎4.6 x 3 x 3.6 inches


Item model number: ‎GXS18V-18N27


Batteries: ‎2 Lithium Ion batteries required.


Size: ‎2-Pack (Turbo Charger)


Color: ‎Black


Style: ‎12 Ah


Finish: ‎Brushed


Material: ‎Blend


Pattern: ‎Solid


Shape: ‎Rectangular


Power Source: ‎Battery Powered


Voltage: ‎18 Volts


Item Package Quantity: ‎1


Included Components: ‎(2) GBA18V120 18V CORE18V® Lithium-Ion 12 Ah High Power Batteries


Batteries Included?: ‎No


Batteries Required?: ‎No


Battery Cell Type: ‎Lithium Ion


Battery Capacity: ‎12 Amp Hours


Warranty Description: ‎Bosch 18V chargers are covered by a five year limited warranty; Bosch 18V batteries are covered by a three year limited warranty. For more information, visit manufacturer’s website


Date First Available: February 15, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Excellent value
Size: 4 Ah Style: Industrial
Bosch battery life is superb. I was initially mislead by the package shape, as the box seemed tossed around, however, batteries and charger were immaculate. These were an amazing value at the moment of purchase. As expected from any Bosch brand, the fit is perfect. A tiny bit heavy since these are a compact form factor, however, placement with the tools are quite balanced and does not affect tool functionality. I'll be on the look out of these amazing values. ... show more
Reviewed in the United States on May 25, 2025 by Luis N
    • Registering Issues Info Here - BC1880 Comparison
Size: 1-Pack w/ Turbo Charger Style: 8 Ah
Review Image by J. Voigt J. Voigt
Review Image by J. Voigt J. Voigt
Review Image by J. Voigt J. Voigt
The media could not be loaded. REGISTERING: Having bought two kits, there was some trouble figuring out how to decipher the numbers and register them online. But before that, Brave Privacy Browser on an Verizon S22 Ultra had issues with the Bosch Site; Google Chrome will allow you to register the equipment. Now the Serial Numbers were supposed to be 9 digits long, but as you can see they are broken up and there are three groups of numbers scattered on the charger keeping you guessing. So see the attached pictures in my review. For the Charger, it's basically the 6 numbers under the QR Code, plus the 3 Numbers before the Character at the end of the 4 digit alphanumeric code to the right and above of the QR Code - again, just look at the picture. On the Battery it's much easier. It's the 9-digit number after the 4 digit alphanumeric code, and it can be found at the top of the battery just behind the red release button. Again can be seen in the pictures. CHARGING: After having charged three 8AH Core 18V Batteries, each on one of the following: BC1880 Helion 160C Helion 160C with Powerboost enabled ....I can say it's not what they claim with it being, what was it, 8x's faster. Maybe that's to a standard Bosch Charger (which I haven't used one since 2011); but it's honestly about 1.4x's faster than the original BC1880 Fast Charger (228W vs 162W), and with the Powerboost enabled 1.9x's faster (309W vs 162W). As far as times go - this is where it gets a bit odd with the 160C and Powerboost. Using Powerboost gets the 8AH battery to 50% in 17 minutes and done in 26 minutes "to 80%" and then shuts off! It doesn't cool off and restart and finish to 100%, it just shuts off at 80%?? Idk the reasoning behind this, but even at 45 degrees in the room and slightly warm to the touch, it's off even 15 minutes later and never restarted. Now without Powerboost, this other 160C unit charges up to 80% somewhere in around 34 minutes and then progressively slows down to around 50-55% of it's charging wattage (115W on average). I say on average because if you have a Kilawatt Inline Power Meter, it linearly slows down the input charging wattage as you reach 100%. But for the total charge time, it took 52 minutes. And compared to the BC1880, it's still chugging along respectably, and starts dialing down from the stabilized 180W at the 80% threshold in what it appears to be in around 44 minutes; and then continues on the last 20% till about 61 minutes have past till it completes the charge. Now putting the Powerboost charged battery back on it's Helion 160C Charger after sitting for 25 minutes made it run at fast charge at 224W for about 4 minutes on the last 20% and then slow down for the remaining 16 minutes, for a total of 20 minutes. Yeah, that's 20 whole more minutes!! Doesn't really make a whole lot of sense at first - but my assumption is that Powerboost just to throws a quick charge on the battery to be responsible enough to dodge overheating and overcharging the battery in the last 20% - something of a lithium battery issue for longevity that you can control in higher end Galaxy Cell Phone Settings and I know it pretty well also in the large 2kW EcoFlow Powerbank Batteries like the Delta 2 Units - in those it preserves their life cycle usage. So in that respect this makes sense I suppose. In Summary: BC1880 to 80% in 44 min to 100% in 61 min Helion 160C to 80% in 34 min to 100% in 52min Helion 160C w/Powerboost to 50% in 17 min to 80% in 26 min Note: takes another 20 min after cooling off to top off the battery Note: two of these batteries on the Helion 160C's have only 1 or 2 charge cycles on them, while the B1880C has about 6 charge cycles. These are relatively new, so these numbers should be highly accurate. ... show more
Reviewed in the United States on October 25, 2023 by J. Voigt J. Voigt
    • Bosch batteries are best
Size: 4 Ah Style: Industrial
I’ve been on this platform for 15 years. I still have an original battery in service. These things live forever and work perfectly every time.
Reviewed in the United States on May 16, 2025 by castiron
    • 8ah is such a luxury for battery intensive tools.
Size: 8 Ah Style: 8 Ah
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Reviewed in the United States on March 18, 2025 by Joe C.
    • Bosch Quality
Size: 1-Pack Style: 12 Ah
More time. More power=More work gets done! Just realize that this largest version of Bosch's 18 volt batteries will only fit in certain Brushless and/or PROFACTOR tools such as their Leaf Blower and certain Impact Drivers etc etc. But when it fits in the tool, it delivers more energy for more time. A fantastic addition to your Bosch collection! ... show more
Reviewed in the United States on April 13, 2025 by Eric A. French
    • Bosch GSX18V-12N14 Starter Kit w/8 Amp Fast Charger and Core18v 8Ah High Power Battery
Size: 1-Pack w/ Fast Charger Style: 8 Ah
This Bosch starter kit was recommended by Bosch Tools to pair with my new Bosch 740N 1/2 inch impact wrench. This starter kit includes: (1) BC1880 8 amp fast charger, and (1) GBA18v80 Core18v 8Ah high power battery. Pros: build quality, durability, power output, charge time, tool brand Cons: The higher performance batteries are expensive ... show more
Reviewed in the United States on May 28, 2025 by Vince
    • Don't cheap out - buy quality.
Size: 8 Ah Style: 8 Ah
Buy the real deal! I thought I found a great deal on a battery for my Bosch tools. Unfortunately I didn't look closely and it was an off brand battery. Looked pretty much the same - but it wasn't. Of the two 8 ah batteries I bought one wouldn't take a charge at all and the other would take a charge but only last for about 10 minutes of use. I finally bit the bullet and disposed of the bad batteries and bought new, Bosch brand batteries. Such a relief to have them last as they should. Don't cheap out because it isn't cheaper in the long run. ... show more
Reviewed in the United States on June 1, 2025 by Rangersmith
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Why did you pick this product vs others?: Best
Reviewed in the United States on June 25, 2025 by Trey A.

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