Energizer Arc 300 Pro
Power station · Arc. Specs from the manufacturer page (checked ).

The Energizer Arc 300 Pro is a 288 Wh portable power station with 300 W AC output and a LiFePO4 battery. It has 9 power ports and can be recharged by car, wall outlet, or solar panel (solar panel not included). The battery is rated for 2,500 to 5,000 charge cycles, and the product carries a 2-year limited warranty.
Key features
- 288 Wh capacity with 300 W AC output
- 9 power ports
- LiFePO4 battery rated for 2,500 to 5,000 charge and discharge cycles before losing 20% of original capacity
- 120V fast charging from a wall outlet, powered up in less than 3 hours
- Three recharge methods: car, wall, or solar (solar panel not included)
- Outputs full 12V regulated DC power even as the battery charge drops
- 6 levels of protection: under/over-voltage, over-current, over-load, short circuit, temperature
- Emission free, compact, and quiet compared with gas generators
What it is for
- RV use
- Bedroom use
- CPAP machines
Specifications
| Capacity | 288 Wh |
|---|---|
| Continuous output | 300 W |
| Battery chemistry | LiFePO4 |
| Cycle life | 2500 cycles |
| AC charging | powered up and on the road in less than 3 hours |
| Warranty | 2 years |
From the Energizer page. Values the manufacturer does not publish are left out.
How long it runs common appliances
| Appliance | Watts | Runs? | Hours |
|---|---|---|---|
| Refrigerator (with freezer) | 120 W (600 start) | surge too high | — |
| Chest freezer | 100 W (500 start) | surge too high | — |
| CPAP (no humidifier) | 35 W (40 start) | yes | 6.5 h |
| Gas boiler (pump + controls) | 120 W (300 start) | yes | 3.8 h |
| Wi-Fi router + modem/ONU | 12 W | yes | 19 h |
| Starlink (standard dish) | 60 W (100 start) | yes | 3.8 h |
| TV 50" | 75 W | yes | 3.0 h |
| Sump pump 1/2 HP | 920 W (2150 start) | surge too high | — |
| Well pump 1/2 HP | 880 W (2000 start) | surge too high | — |
| Space heater 1500 W | 1500 W | surge too high | — |
Assumes 88 % inverter efficiency, 90 % usable capacity and typical duty cycles. Build your own list in the calculator.
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Connection and wiring
We have not linked an official manual for this model yet; see the Energizer page.
Error codes and troubleshooting
We have not found an official code table for this model yet.
FAQ
How long will the Energizer Arc 300 Pro run a refrigerator?
About 5 hours for a typical 120 W refrigerator that runs 35 % of the time, after inverter and depth-of-discharge losses.
Can the Energizer Arc 300 Pro start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 300 W output (no separate peak published). That is below a typical 1/2 HP sump pump start (about 2150 W); check your pump label. Use the calculator with your exact pump.