✓ 3-year warranty ✓ Free US shipping on orders $25+ ✓ 30-day returns
CEENR
CEENR 300W 4-Slot Power Inverter for 18V/20V Tool Batteries Launching soon Watch it work · 0:49
Launching soon

CEENR® 300W 4-Slot Power Inverter for 18V/20V Tool Batteries

CEENR® is an independent brand — not made by or affiliated with the listed tool brands. Brand names indicate tool compatibility only.

$129.99

Launching soon · not available to order yet

Turn the 18V/20V tool batteries you already own into a 120V power station. Load up to four, in any mix of brands.

AC outlet · 120V
300W
USB-C PD + 2× USB-A
45W
batteries, auto-switching
1–4
brand adapters included
4 of 10

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Preview your 4-adapter setup

0/4 chosen

Every inverter will ship with 4 brand adapters you choose, one per slot. Tap a brand to fill the next slot — ordering opens at launch.

Match each adapter to your pack: Worx has two 20V styles (WA3520-style PowerShare and WA3551-style), and the Bosch adapter fits blue Bosch 18V packs, not green POWER FOR ALL.

Will include the inverter and the 4 adapters you choose · Batteries not included

✓ 3-year warranty ✓ 30-day returns

SKU: CR14-1022-4245

How it works

Four batteries in. A 120V outlet out.

  1. 01
    Click in your adapters.

    Slide the brand adapter for your pack into a slot until it clicks. Press the release button to take it out and swap brands.

  2. 02
    Add your batteries.

    Load one to four 18V/20V slide packs — the tool brand's own or CEENR (DC 15–21V input).

  3. 03
    Plug in.

    Up to 300W from the AC outlet, 45W from USB-C and 12W from each USB-A port — plus a built-in LED light, 1,000 lm on high and 500 lm on low.

The dock

Four slots. Any mix. One pack at a time.

Four brand adapters come with the inverter — pick any four of the ten, mix brands or double up. With several packs loaded, it draws from one at a time and switches to the next automatically when that pack runs flat, so every pack you add extends your runtime. The LCD cycles through each battery's voltage and charge and shows live AC watts and frequency.

Ryobi ONE+ adapters are not offered.

Preview your setup ↑
Example: 2 × DeWalt 20V MAX, 1 × Milwaukee M18 and 1 × Bosch 18V (blue). One pack runs at a time; when it runs flat, the next takes over.
Where it works

Wherever there's no outlet.

Everyday loads under 300W combined — on the jobsite, at camp or on the road.

CEENR 300W inverter on a jobsite workbench
On the jobsite

LED work lights, a box fan and a laptop, with no outlet nearby.

CEENR 300W inverter powering a laptop and devices at a campsite
At camp

String lights, a speaker and camera chargers, plus USB-C for your laptop.

CEENR 300W inverter with a drone in an SUV cargo area
On the road

Recharge drone and camera batteries between flights and shoots.

Runs
  • Laptops & monitors
  • LED work lights
  • Fans
  • Wi-Fi router & modem
  • Phone, camera & drone chargers
  • String lights
Not for
  • Space heaters
  • Kettles
  • Microwaves
  • Coffee makers
  • Hair dryers

Keep the total load under 300W.

Specs

Every port, by the numbers.

AC outlet
300W
Standard US 120V / 60Hz socket · modified sine wave
USB-C PD
45W
5 / 9 / 12 / 15V at 3A
USB-A
2×12W
Two ports, 5V / 2.4A each
Battery slots
4
1–4 packs, automatic switching
LED light
1,000lm
High 1,000 lm · Low 500 lm
Warranty
3yrs
Plus 30-day returns

Full specifications

Included
300W inverter · 4 brand adapters you choose · batteries not included
AC output
300W max · 120V / 2.5A · 60Hz · modified sine wave
USB-C output
45W max PD · 5/9/12/15V 3A
USB-C protocols
PD 3.1 · PPS · PD 2.0/3.0 · Apple 2.4A · BC1.2 · FCP · SCP · HVDC
USB-A output
2 × 5V / 2.4A (12W max each)
Battery input
1–4 × 18V/20V slide packs · DC 15–21V
Battery slots
4 · one at a time, automatic switching
Adapters
4 included · your pick of 10, any mix
LED light
1,000 lm high · 500 lm low
Display
LCD · each battery's voltage & charge · AC watts & Hz
Protection
Low battery · over-temperature · overcurrent · short-circuit · overload
Warranty
3 years · 30-day returns

Modified sine wave: some sensitive electronics and medical devices may not work properly.

Compare

Swap batteries, not power stations.

Your tool packs are the battery. When one runs flat, the next takes over — and when a pack wears out, you replace the pack, not the power station.

CEENR 300W 4-Slot
Typical power station
Power source
Your 18V/20V tool packs, 1–4
Built-in battery
When the battery wears out
Swap in another pack
Built-in cells age with the unit
Runtime
Add packs for longer runtime
Set by the built-in battery
Tool-battery brands
4 adapters, your pick of 10
Not applicable
AC output
300W · 120V / 60Hz (modified sine)
Varies by model
Warranty
3 years
Varies
In short

The CEENR 300W 4-Slot Power Inverter turns the 18V/20V tool batteries you already own into a portable 120V power station. It comes with four detachable brand adapters that you choose from ten options — DeWalt 20V MAX, Milwaukee M18, Makita 18V LXT, Bosch 18V (blue), BLACK+DECKER 20V MAX, Craftsman V20, Porter-Cable 20V MAX, two Worx 20V pack styles (WA3520-style PowerShare and WA3551-style) and Einhell 18V Power X-Change — in any mix, including the same brand more than once. Load one to four packs (DC 15–21V input): it runs one battery at a time and switches to the next automatically when that pack runs flat. Outputs are a standard US AC outlet with up to 300W (120V, 60Hz, modified sine wave), a 45W USB-C PD port and two 12W USB-A ports. A built-in LED light gives 1,000 lumens on high and 500 on low, and the LCD cycles through each battery's voltage and charge while showing live AC watts and frequency. Low-battery, over-temperature, overcurrent, short-circuit and overload protection are built in. It is meant for loads under 300W combined — not for space heaters, kettles or microwaves. 3-year warranty, 30-day returns.

FAQ

Common questions.

Not sure which adapter fits? Email info@ceenr.com with the model number printed on your battery.

Which batteries does the 300W 4-slot inverter work with? +
18V/20V slide batteries (DC 15–21V input) that fit one of its 10 adapter options, which cover 9 brands: DeWalt 20V MAX, Milwaukee M18, Makita 18V LXT, Bosch 18V (blue), BLACK+DECKER 20V MAX, Craftsman V20, Porter-Cable 20V MAX, Worx 20V PowerShare (WA3520-style), Worx 20V (WA3551-style), Einhell 18V Power X-Change. OEM and CEENR packs both work. Each battery clicks into a brand adapter, and each adapter clicks into one of the four slots. Match the adapter to your pack: Worx sells two pack styles (North American WA3520-style PowerShare and WA3551-style), and the Bosch adapter is for blue Bosch 18V packs, not green POWER FOR ALL. Ryobi ONE+ adapters are not offered.
How do I choose the 4 adapters? +
When you order, tap a brand to fill each of the four slots on this page — mix brands, or use the same brand in more than one slot. Add to Cart unlocks only once all four are chosen, and the four adapters ship with the inverter. Your picks show on the cart line and on your order.
Do I need four batteries? +
No. It runs on one to four batteries. With more than one installed it uses one pack at a time and switches to the next automatically when the current pack runs flat, so more packs mean longer runtime. When every battery is depleted, all outputs shut off and a flashing low-battery icon appears on the LCD.
What can 300W run? +
Everyday loads whose combined draw stays under 300W: laptops and monitors, LED work lights, fans, a Wi-Fi router and modem, phone, camera and drone chargers, string lights and small electronics. It is not for high-watt appliances such as space heaters, kettles, microwaves, coffee makers or hair dryers. The AC outlet is a modified sine wave, so some sensitive electronics and medical devices may not work properly.
How long will it run? +
It depends on the batteries and the load. A pack stores roughly its amp-hours × 18V in watt-hours — a 5.0Ah pack is about 90 Wh nominal, so four of them hold about 360 Wh — and the inverter uses some of that energy in conversion, so a steady load runs for somewhat less than that figure divided by its watts. The LCD shows each battery channel's charge and the live AC watts, so you can see how fast you are drawing it down.
Can I use it outside the US? +
It is built for North America: the AC outlet is a standard US 120V / 60Hz socket. It is not a 230V inverter, so it is not suitable for European or UK appliances. The USB-C (45W) and USB-A ports charge phones, tablets and many USB-C laptops anywhere.
Is this a genuine DeWalt, Milwaukee or Makita product? +
No. CEENR is an independent brand. This inverter and its adapters are engineered by CEENR to work with the listed battery platforms — they are not made by, sold by, or affiliated with DeWalt, Milwaukee, Makita, Bosch, BLACK+DECKER, Craftsman, Porter-Cable, Worx or Einhell. Those names are trademarks of their respective owners, used only to indicate compatibility.
What is the warranty and return policy? +
A 3-year limited warranty from the date of purchase, plus a 30-day return window — email info@ceenr.com within 30 days of delivery for the return address; you ship it back and we refund your order plus the return shipping once it passes inspection.
CEENR 300W inverter running a lamp and charging a phone during a power outage
Launching soon

Power through the next outage.

Keep a router, a lamp and phone chargers running on the tool batteries you already own. Leave your email and we'll write once when it's ready to order.

$129.99
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$129.99
Launching soon · 4 adapters included
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