Certification: Certification CARB Certification cETL Certification EPA
Model: b104201

Zero E Expansion Power Pack +1000

$799.99 USD Regular price $1,199.99 USD
Free shipping to the contiguous United States

Expand your backup power with the FIRMAN Zero-E Battery expansion pack. Adding 1,040Wh of capacity to your FIRMAN Zero-E Energy Storage System, this slide-lock battery connects effortlessly—just slide it into place until it clicks. Stack up to 10 batteries for a total capacity of 11,440Wh, giving you serious energy for extended outages or off-grid use.

Charge it independently or as part of your Zero-E system. An onboard 100W USB-C port powers laptops, tablets, phones, drones, and more. Built with Lithium Iron Phosphate technology, the Zero-E Battery delivers safe, reliable performance with over 4,000 charge cycles. Whether you're preparing for emergencies or powering adventures, this expansion pack keeps you going longer.

The FIRMAN Zero-E Energy Storage System delivers clean, emission-free power wherever you need it—perfect for homes, apartments, RVs, and vehicles. With 4,000 starting watts and 2,000 running watts, the Zero-E can power small to medium appliances, electronics, and essential devices.

Featuring advanced EPS (Emergency Power Supply) pass-through technology, the Zero-E automatically backs up your fridge, modem, sump pump, or security system during an outage—switching to battery power in milliseconds. Its Lithium Iron Phosphate battery ensures safe operation, 4,000+ charge cycles, and long-term reliability.

Need more runtime? Easily expand with slide-on Zero-E batteries—up to 10 add-ons for a total of 11,440Wh capacity. Power up your devices with six 120V outlets, a TT-30R RV outlet, four USB-A ports, two 100W USB-C ports, a 12V cigarette outlet, a 12V DC port, and a Qi wireless charger.

Recharge the Zero-E your way: from a standard wall outlet, your vehicle’s 12V socket, or up to 400W of solar input. Whether you're preparing for emergencies or living off-grid, the Zero-E is your all-in-one portable power solution.

Zero E Portable Expandable Power Station

Zero E

Portable Power Station

Features

Add extra power to your ZERO-E PORTABLE POWER STATION with the Power Pack+ 1000, for almost any challenge life may throw your way. 

Inspired by the same unparalleled commitment to quality, we take pride in the impeccable performance of our generators and accessories. 

Stack up to 10 Power Pack+ 1000s to your ZERO-E and conquer your tasks the FIRMAN way! 

We are proud to have designed a portable power station system that is not only highly reliable, ultra-quiet, and incredibly safe, but is also great for the planet we live in.

3-Year Warranty

1040 Watt-Hour Rechargable Lithium Ion Battery

Weighs only 26.5 lbs

Scalable up to 10 expansion packs (with ZERO-E Head Unit)

Over 4K Cycles to 80%+ Charge

Zero Emissions, Zero Fumes

1040WH

Capacity

1 HOUR to 80%

Quick Charge

41.6 V

25 Ah

EASY TO USE

Slide Lock-in Technology

EXPERIENCE

With FIRMAN, you are always in control. The Power Pack+ 1000 lets you slide in added power and take your ZERO-E to the next level.

Enjoy our lateset addition to a range of advanced portable power stations, for almost any task, indoors or sheltered.

SAME UNPARALLELED SAFETY STANDARDS

Adding to the lineup of the some of the safest generators and power accessories ever built, FIRMAN has rigorously stuck to its impeccable standards of safety.

Unlike fossil fuel generators, the Power Pack+ 1000 — like the ZERO-E — is built for the indoors, with zero emissions and zero carbon monoxide. 

EFFORTLESSLY CHARGE

Charge the Power Pack+ 1000 effortlessly with any one of these options to add extra power to your Zero-E Portable Power Station:
- AC Charger 200W — Input: 110V - 230V, 50/60Hz
- MPPT Charger 400W max. — 95% MPPT Efficiency Input:10V - 70V
- DC Input Port (XT60) Rated up to 45.5V/20A.
- USB-C (Bidirectional x 1) 5V⎓3A/9V⎓3A/12V⎓3A/15V⎓3A/20V⎓4.95A 99W. The total charg port- Expansion Port 41.6V / 65A max.

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UTILITY

At FIRMAN, the most durable, gassless generator only keeps getting better. You can effortlessly add more power to your ZERO-E to conquer most of your task.

We are constantly pushing the boundaries, so that you can do the same in every aspect of your life. 

Specifications

As one of the world's largest manufacturers of portable generators, we pride ourselves on the unparalleled quality of our products. The ZERO-E Portable Power Station and the Power Pack+ 1000 are packed with features that prepare you for almost any situation you find yourself in. (120V only).

cETLus (UL2743) Yes
UN38.3 Yes
FCC SDOC Yes
FCC ID No
IC ID No
DOE No
CEC No
SDS Yes
ROHS Yes
Rated Capacity 1040Wh
Cycle Life >4000 complete cycles to 80% capacity
Storage Temperature -20 ~ 40 °C (-4 ~104 °F)
Discharging Temperature -20 ~ 40 °C (-4 ~104 °F)
Charging Temperature 0 ~ 40 °C (32 ~104 °F)
Shelf Life 12 Month
AC Charging Watts 400W
MPPT Watts 400W
Car Charging Watts 240W
USB-C PD Watts 100W
USB-C PD Watts 100W
LED Level Display Yes
Main Power Switch Yes
USB-C PD In&Out 100W Yes
XT60 DC Input 1
Expansion Pack Male Connector Yes
Expansion Pack Female Connector Yes
XT60 Cover Yes
Pull Rod Yes
Color Black
Battery Cell Spec LI-FUN 25Ah 3.2V
Battery Type LFP
Pack Configuration 13S1P
Cooling NA
Rated Charging Current 35A
Rated Discharging Current 65A
Overcurrent Protection Yes
Temperature Protection Yes
Short Circuit Protection Yes
Balance Management Yes
UPC Code 840876105016
Carton Dimensions 19.7x15x11.4
Carton Weight 31.5
Product Dimensions 15.4x10.6x8.3
Product Weight 28.6

Manuals

B104201 Operators Manual (English)

download

B104201 Operators Manual (French)

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B104201 Operators Manual (Spanish)

download

B104201 QSSG (English)

download

B104201 QSSG (French)

download

B104201 QSSG (Spanish)

download

Need more answers?

  • The Zero-E Power Pack provides 1040 Watt Hours so for example you could power a device that requires 100 watts for a little over 10 hours.
  • Up to 10 Zero-E Power Packs can be stacked with each Zero-E.
  • The Zero E Power Pack can be discharged down to 0 degrees F and charged at temperatures as low as 32 degrees F
  • No, the Zero E Power Pack is not waterproof
  • The Zero E Power Pack produces up to 2000W continuous and 4000W surge
  • Camping, Power Outages, as a EPS (Emergency Power Supply), Sports, Small Businesses
  • 26.5 Lbs
  • "Watt Hours" defines the measurement of the capacity of the Zero E. Each Zero E Battery Pack provides 1040 Watt Hours. That means if you have a device that requires 100 watts the Zero E will power it for just over 10 Hours. Each additional Zero E Battery provides another 1040 Watt Hours. So a Zero E with one additional battery would power a 100W device for nearly 21 hours.
  • The Zero E Power Pack should be protected from the elements. You can safely use the Zero E Power Pack indoors, in an RV or Camper, in a tent while camping or even inside a vehicle.
  • View Buying Guide
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