A solar generator is only useful if you can recharge it.
During a power outage, wall outlets aren’t an option — so how do you keep your battery topped up?
The good news: there are several practical ways to recharge a solar generator even when the grid is down.
Here’s what actually works.
1. Recharge with Solar Panels (Best Long-Term Option)
The most reliable way to recharge during an outage is with solar panels.
Benefits:
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Renewable power source
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No fuel required
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Quiet operation
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Ideal for multi-day outages
If you expect extended blackouts, pairing your generator with compatible solar panels is the most sustainable solution.
Keep in mind:
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Cloud cover reduces output
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Panel wattage affects recharge speed
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Proper placement matters
For larger systems (1000Wh+), multiple panels may be needed for faster recharge.
If you’re selecting panels for your setup, see our recommendations for the best solar panels for solar generators.
2. Recharge from Your Vehicle (Short-Term Backup)
Most solar generators can recharge using:
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A 12V car outlet
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An RV outlet (if available)
This method is useful for:
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Emergency top-offs
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Apartment dwellers without solar access
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Short outages
However:
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Charging from a vehicle is slower
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Idling a vehicle consumes fuel
This works best as a temporary solution.
3. Recharge When Power Briefly Returns
In many storm situations, power flickers on and off.
If power returns even briefly:
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Plug in immediately
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Take advantage of fast-charge models
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Top off before the next outage wave
Some units recharge significantly faster than others.
(Specifications may vary slightly depending on the current manufacturer version.)
4. Combine Solar + Conservative Usage
During extended outages, stretch runtime by:
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Running heavy appliances during daylight
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Charging devices while panels are producing
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Minimizing overnight loads
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Keeping refrigerators and freezers closed
This reduces how often you need to recharge.
How Long Does It Take to Recharge?
Recharge time depends on:
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Battery size (Wh)
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Solar panel wattage
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Sun conditions
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Charger input capacity
Example ranges:
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1000Wh unit with 200W solar → 5–8 hours of good sunlight
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2000Wh unit with 400W solar → similar recharge window
Cloud cover and shading will extend those times.
What If You Don’t Have Solar Panels?
If you don’t own panels yet:
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Use vehicle charging temporarily
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Reduce appliance load
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Prioritize essentials (fridge, lights, Wi-Fi)
For long-term outage preparedness, solar panels are strongly recommended.
Final Recommendation
If you plan to rely on a solar generator during outages, pairing it with compatible solar panels is the most reliable recharge strategy.
A 1000Wh-class unit like the Jackery Explorer 1000 series paired with solar panels provides flexible outage coverage. (Specifications may vary slightly depending on the current manufacturer version.)
For appliance-specific power planning, you may also want to review: