Battery Equivalents and Replacements

Rockpals RP250W 250-Watt Portable Power Station

Rockpals RP250W is a very popular compact and lightweight portable power station, often used for fishing, camping, and other outdoor activities and off-the-grid situations.

In emergencies, Rockpals RP250W is able to power most essential appliances, various light sources and to recharge telecommunication and other electronic devices like smartphones, laptops, tablets, and similar.

Published: February 22, 2021.

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Rockpals RP250W Features and Specifications

Rockpals RP250W portable power station uses onboard lithium-ion batteries as a power source, which are able to store 240 Wh of energy.

Physical dimensions of the unit are (L x W x D) 8.9 x 3.9 x 6.3 inches (~22.6 x 10 x 16 cm) and it weighs only 5.95 pounds (~2.8 kg) - thanks to the built-in handle, it can be easily carried around (to shorter distances).

Operating temperature range is between 14°F and 104°F (-10°C and 40°C) - thanks to the intelligent management system, the unit features short circuit protection, voltage control (over-voltage/under voltage), temperature control (low/high), over current protection, and overload protection.

When the unit arrives, the box contains Rockpals RP250W portable power station, AC adapter, AC Cable, Car charger cable, DC to Cigarette Socket adapter, and the user manual.

Note: Rockpals RP250W portable power station is very easy to use and maintain, but just in case, when the unit arrives, be sure to read the manual thoroughly in order to get accustomed to your new power station.

Rockpals RP250W portable power station features several power output ports:

- dual pure sine wave 110V AC ports, 250 Watts max., 300 Watts peak/surge,

- four 12V DC ports (9-12.6 volts, 5 Amps, 60 Watts max.),

- two USB 5V/3.1 Amps ports.

When calculating runtime under a certain load, note that Rockpals RP250W portable power station features an efficiency of ~85% and that the batteries are able to withstand 500 charging/discharging cycles with the capacity loss down to 80% of the nominal capacity.

For example, new Rockpals RP250W is able to power 50W load (for example, an average 40-inch LED, or 24-inch LCD TV, although these values may vary significantly) for:

T = 240 Wh/50W * 0.85 = ~4 h

If the batteries are 'old' and they feature 80% capacity of the new batteries, then the runtime is somewhat shorter (~3h and 15 minutes).

How to Recharge Rockpals RP250W

Rockpals RP250W may be recharged in several ways via its DC 15V/4.0A (5.5x2.1mm) charging port, including:

- AC adapter (included): 6-7 hours charging time,

- 12V Car adapter (included): 6-7 hours charging time (be sure not to discharge the car battery),

- 18V max. Solar Panel (not included - optional): charging time depends on the solar panel power, weather conditions, season, and similar.

Note: Rockpals offer two foldable solar panels that are suitable for charging the Rockpals RP250W power station - 60W and 100W models.

Personally, a 100W solar panel is a better option for the 250W power station and a 60W solar panel is a better option for the 120W power station.

rockpals 100w solar panel

For the most up-to-date offers and prices, feel free to check ROCKPALS 100w Foldable Solar Panel Amazon link (link opens in the new window).

Of course, other 18V solar panels may also be used (some may require adapters) to recharge the Rockpals RP250W power station.

Rockpals RP250W power station comes with a 2-year limited warranty, which is a nice warranty for the device in this price class.


rockpals rp250w mLong Story Short: If You are looking for a mid-size portable power station, consider Rockpals RP250W power station - it is able to recharge various electronics devices, and to power smaller home appliances.

It may be very useful in off-the-grid situations and in emergencies, especially when combined with suitable solar panel, it may provide energy around the clock for the most essential units like various light sources and telecommunication devices.

For more reviews and recommendations, feel free to check Rockpals RP250W 250-Watt Portable Power Station Amazon link (link opens in the new window).