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PERUN Battery Back-Up for PB-20

When connected to a Perun PB-20 you get 1280Wh of power (640Wh + 640Wh) doubling the runtime for optimum performance. Charges directly through the Perun PB-20 by AC outlet, 12v or solar panels When connected to a Perun PB-20 you get 600w of continuous running power with 1,200w peak output giving you the performance you need to power and charge a wide range of electronics, appliances, tools and more! 3 convenient charging options include: AC household electrical outlet, solar panels up to 100w or a 12v car charger when connected to a Perun PB-20 The PB-23 battery back-up works exclusively with the PB-20 power station This is a complete kit that includes: (1) PB-23 Perun 640Wh battery back-up; (1) connection cable to PB-20; (1) Operator Manual

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The Perun PB-23 640Wh battery back-up for the PB-20 600w portable power station doubles the runtime for extended power supply. This innovative battery back-up charges directly through the PB-20 so there is no complicated extra cables needed. Simply connect with the cable provided and charge with the same input power you are charging your PB-22: AC outlet, 12v or solar panels. This extended runtime combination is the optimum solution for continuous running power for your home, office and on-the-go. Keep them charged and ready for emergency power or take it with you to the park, camping or just in the backyard. If your job requires power in the field for computer, tablet, lighting, and other electronics the PB-20+PB-23 is the perfect solution! You can charge and operate as many as 9 different devices at the same time with the wide range of power output options. Charging is a breeze with 3 different options: wall outlet, 12v car plug or solar panel.

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[This review was collected as part of a promotion.] 640 Wh may sound small until you realize it's Li-ion and weighs <8 lb. Tossed it in the Jeep to back-feed a 60 L fridge overnight—battery hit 42 % by morning and re-charged from the alternator while driving.

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Plugged a 90 W panel into the PB-20 and the paired PB-23 still accepted the full 100 W-max input. Mid-day desert sun took the stack from 40 % to 92 % in roughly seven hours—perfect for multi-day boondocking.

Solar-Friendly Backup

Clipped the PB-23 to my PB-20 in our travel trailer and instantly jumped from one to two full days of fridge + Starlink runtime. Charging both packs together from a 100 W solar blanket topped them off by late afternoon—no generator required.

Doubles My PB-20 Runtime on the Road

Paired with the PB-20, the extra battery let me time-lapse Grand Teton sunrise with two DSLR bodies, a motion slider, and a laptop tether—all without the hum of a gas generator. Still had 30 % left after four hours of 4 K capture.

Silent Power for Sunrise Shoots

Rural well pump pulls about 450 W at startup; PB-20 alone tripped at peak draw but with the PB-23 attached (total 1,280 Wh) it starts and runs fine. Lifesaver during the last ice storm.

Runs Well-Pump Controller in Outages

Ran a 300 W heat-press, Cricut Maker, and LED lights at a farmer's market booth from 8 a.m.–1 p.m. The LCD said 26 % when we packed up. Customers loved the quiet setup.

Craft-Fair Workhorse

Florida storms knock out our power a few times every year. This 640 Wh add-on kept two phones, a Wi-Fi router, and a 40 W fan running for nearly eight hours. Worth it just for the peace of mind.

Storm-Season Security Blanket

Love that the PB-23 docks straight into the PB-20 with the included jumper—no extra bricks. Fifty-five minutes on AC brought the add-on from 10 % to 80 %, so I was back in business before lunch.

Fast Swap, Zero Cables

Big buttons, bright LCD, and a single connector cable—no fiddly menus. I keep it charged for my husband's CPAP; during a recent 5-hour outage the CPAP ran all night and the meter still read 45 %.

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