Sakerplus® New Lithium Battery Inverter

6 Reasons Why Smart Homeowners Are Turning Their DeWalt & Milwaukee Batteries Into Emergency Power Stations

By Marcus Webb

18/10/2026

Last winter, a nasty ice storm knocked out power in my neighborhood for 31 hours.

My neighbor fired up his gas generator at 11 PM. The noise was unbearable. The fumes drifted into his house. His wife made him shut it off by midnight.

Meanwhile, I slid a DeWalt battery into a palm-sized device, plugged in my router, my laptop, and my phone charger — and kept working in complete silence.

He asked me the next morning: “What the heck was that thing?”

Here’s everything you need to know about it.

01

Your Expensive Tool Batteries Are Basically Dead Weight During an Outage — Until Now

If you own DeWalt, Makita, or Milwaukee tools, you’re sitting on serious stored energy right now. Those 20V lithium packs in your garage hold enough juice to run your router, charge your phone, and keep your lights on — but most people have no way to access that power when the grid goes down.

The Sakerplus® Inverter snaps directly onto your existing tool battery — no special cables, no setup — and instantly transforms it into a portable power station with an AC outlet, USB-C, USB, and 12V DC ports. It’s the missing link between your tool bag and your emergency kit.

“I’ve got like 6 DeWalt batteries from years of buying tools. Never once thought I could use them to keep my house running during a blackout. This thing just… works. Plugged my router in and boom, internet stayed on the whole time the grid was down.”

- Jennifer B.

02

Cheap Adapters Are Quietly “Bricking” Your $150 Batteries — Here’s Why

When you plug a cheap passive adapter into your battery with no tool to tell it when to stop, it drains your lithium cells straight past the danger threshold. The result? You slide that battery back onto your charger the next morning and it flashes a red “DEFECTIVE” error and refuses to charge. Dead. Permanently.

The Sakerplus® VoltGuard™ Intelligent BMS acts as that missing brain — it continuously monitors voltage in real-time and automatically cuts off discharge before the battery enters the damage zone. Your $150 battery pack stays protected, every single time.

“Bought a cheap one off Amazon first. Ruined a Milwaukee battery in two weeks — charger just rejected it completely. Lost $140. Got this instead and it actually has protection built in. Wish I’d found it first.”

- Amanda T.

03

It Powers Your Most Critical Devices — Simultaneously — With Clean, Stable Power

Your home internet router, laptop, and phone charger weren’t designed for “dirty” modified sine wave power from cheap inverters. Those jagged, unstable voltage spikes force your device’s motherboard to work overtime, causing overheating, system crashes, and long-term microchip damage.

The Sakerplus® PowerHarmonics™ Clean-Wave Regulator filters and smooths the output to deliver grid-quality power across all its ports at once — featuring an AC outlet for real appliances, USB-C for fast phone charging, USB-A for older devices, and 12V DC for accessories. Plus, the built-in LED light means you're never fumbling in the dark. Everything running simultaneously. Everything running safely.

“Router, laptop, AND a fan all running off one battery during a 6-hour outage. Not a single hiccup. The fact that it charges everything at the same time is insane for the price.”

- Rachel K.

04

It Runs 100% Silent & Fume-Free — Safe to Use Inside Your Home at 2 AM

A gas generator produces roughly 65–75 decibels of noise — about as loud as a vacuum cleaner running non-stop. It also produces carbon monoxide, which is why every generator warning label says “NEVER USE INDOORS.” People die from this every year.

The Sakerplus® makes zero noise and zero emissions. The only sound you’ll hear is the whisper-quiet ThermoFlow™ brushless cooling fan that kicks in during heavy loads to prevent overheating. Your family sleeps. The neighbors don’t complain. No fumes, no exhaust, no fire risk.

“My wife has zero tolerance for noise at night. This thing is completely silent. Used it all night during a storm outage and she didn’t even know it was running until the morning. Game changer.”

- Diane M.

05

Built-In Emergency LED Light — Because Blackouts Don’t Wait for Daylight

The moment the power goes out, your first instinct is to find a flashlight — which is usually dead, missing, or buried in a drawer somewhere. The Sakerplus® has a high-output LED module built directly into the unit.

The second you need it, it’s already in your hands. One device. Power station AND emergency light. It’s especially valuable for campsites, basement workshops, and hallways during sudden nighttime outages.

“Little things matter. The built-in light saved me stumbling around in the dark when the power went out at midnight. I already had the inverter in my hand so the light was right there. Smart design.”

- Jaxon D

06

Compact Enough to Fit in a Glove Box, Powerful Enough to Run emergency Fans & Laptops

Most dedicated power stations (Jackery, Anker, EcoFlow) are the size of a carry-on bag and cost $400–$1,000+. They’re great — until you realize they weigh 11+ pounds and take up half your trunk.

The Sakerplus® is pocket-sized. It fits in a tool bag, a glove compartment, a kitchen drawer, a camping pack. Wherever your battery goes, your power station goes. Campers love it for mini-fridges and coffee machines. Jobsite pros carry it to power diagnostic laptops in remote locations. Overlanders run fans and charge camera gear without touching the vehicle battery.

“Use it in my camper van every single weekend. Coffee machine AND laptop running off one Milwaukee battery. Takes up basically zero space. Why did it take me this long to find this thing?”

- Mike Patterson

TRUSTED BY 50,000+ CUSTOMERS WORLDWIDE

The Sakerplus® Inverter has been purchased and trusted by tens of thousands of homeowners, off-grid campers, and working tradesmen across the United States. With a 90-day satisfaction guarantee, every order is fully protected.

Powered a mini-fridge and lights all night. It’s so much lighter than lugging out that bulky generator. Can’t believe I didn’t have this sooner.”

🔒 90-Day Full Refund Guarantee 42+

⚡ 50,000+ Units Sold & Counting 106+

* Results based on a survey of 4,123 customers

SELECT YOUR VERSION

Choose the Sakerplus® model that matches your existing tool batteries — DeWalt, Makita, or Milwaukee.

SNAP IN YOUR BATTERY

Slide your fully charged lithium tool battery into the bottom dock of the inverter. It clicks securely into place — just like attaching it to a power tool.

PLUG IN & POWER UP

Connect your devices to the AC outlet, USB-C, USB, or 12V DC ports. That’s it. Your emergency power station is live and running in under 10 seconds.

GET YOURS NOW — BEFORE STOCK RUNS OUT

The Sakerplus® is currently running a major summer discount — but with only 57 units left in stock, this price won’t last. Thousands of people are stocking up right now before storm season. Once these are gone, the price goes back up.

UP TO 50% OFF

FOR A LIMITED TIME ONLY!

-50% OFF>

SELECT YOURS NOW

* Try it today with a 90-Day Money Back Guarantee!

What Our Customers Are Saying

4.8

(5,513+ reviews)

Jennifer T.

20 hours ago

Okay I’ll be honest, I was skeptical at first. Thought it was just another gadget that would fry my batteries. But I’ve been using it for 3 months now on my DeWalt DCB205 and the battery is still reading 100% healthy on my charger every time. The protection actually works.

20 hours ago

Liked 8+

Reply 2+

Sarah M.

2 days ago

Same here. I bought a cheap one from some random brand last year and killed a $130 battery in like 2 weeks. Got this one and haven’t had a single problem. Night and day difference.

2 days ago

Liked 15+

Reply 5+