System Class
5 kWh Systems
What a 5 kWh class system can run, for how long, and how current units near 4 to 5 kWh compare on output, voltage, expansion and recharge, using published manufacturer specifications.
Starting 150 W for 24 h is a hypothetical example. Runtime uses 4,500 Wh (5,000 Wh × 0.90). Recommended size adds Zaron's 20% margin. 90% and 20% are planning assumptions, not universal constants. If startup is blank, verify manufacturer specifications.
Size my whole backup plan5 kWh of nominal energy. Listed units are 3,840 to 5,040 Wh.
5,000 Wh × 0.90 assumed efficiency.
Published manufacturer specs, from official pages.
Runtime at common loads
How Long Does 5 kWh Last?
Constant load, 4,500 Wh planning energy. Runtime in hours = 4,500 ÷ watts.
| Load | Planning runtime | Hours + minutes |
|---|---|---|
| 100 W | 45 h | 45 h 0 min |
| 500 W | 9 h | 9 h 0 min |
| 1,000 W | 4.5 h | 4 h 30 min |
| 1,500 W | 3 h | 3 h 0 min |
| 3,000 W | 1.5 h | 1 h 30 min |
What can it run?
What a 5 kWh System Can and Can't Do.
Categories, not promises. Real results depend on your devices.
Essential circuits
Refrigeration, internet, lights, medical equipment and electronics for many hours. Verify each device.
Pumps and motor loads
Well and sump pumps need documented startup demand and matching voltage. Verify manufacturer specifications.
Heating, cooling and cooking
Space heaters, electric cooking and AC can consume 5 kWh in a few hours, even when the output fits.
≠ 5 kWENERGY vs POWER
Capacity, Output and Voltage Must All Match.
5 kWh is how much energy is stored. AC output in watts is what can run at once, and 120V or 240V output is what your appliance requires. 5 kWh is not unlimited: heavy heating or cooling loads can use it quickly.
Side by side
5 kWh Class Systems, Compared.
Manufacturer-published figures. Prices are not shown because they vary: check current official pricing. Specs can change by region and version.
| Spec | Jackery Explorer 5000 Plus | EcoFlow DELTA Pro 3 | Anker SOLIX F3800 |
|---|---|---|---|
| Capacity | 5,040 Wh (LiFePO4) | 4,096 Wh (LFP) | 3,840 Wh (LFP) |
| Continuous AC | 7,200 W max | 4,000 W (6,000 W with X-Boost) | 6,000 W |
| Surge / peak (published) | 14,400 W surge | 8,000 W for 400 ms (per spec listing) | Verify on manufacturer page |
| Voltage | 120V / 240V | 120V / 240V | 120V / 240V |
| Expandable? | 5 to 60 kWh | Up to 12 kWh per unit; up to 48 kWh system | 3.84 to 26.9 kWh; up to 53.8 kWh system |
| Solar input (published) | Verify on manufacturer page | Up to 2,600 W | Up to 2,400 W |
| Weight | About 134.5 lb | 113.5 lb | 132.3 lb (Anker support) |
| Warranty | 5 years | 5 years (3 standard + 2 with app registration) | 5 years |
| Cycle life (published) | 4,000 cycles to 70%+ | Verify on manufacturer page | 3,000 cycles to 80%+ |
| Consider if | You want a true 5 kWh in one unit with the highest listed continuous output. | You want 120V/240V at 4 kWh with a path to expand, and X-Boost for resistive loads. | You want 6,000 W at 3.84 kWh with expansion to 26.9 kWh. Note: 240V can't be used while charging from 120V AC. |
Do not connect any of these to a home panel without manufacturer-specified transfer equipment and applicable electrical requirements. Never backfeed. See 120V vs 240V.
Methodology
Numbers You Can See. Assumptions You Can Check.
90% and 20% are Zaron planning assumptions, not universal constants. Zaron compares published specifications and has not physically tested these products.
Evidence
Know Where the Numbers Come From.
EcoFlow and Anker SOLIX
DELTA Pro 3 and F3800 product pages, plus Anker support for weight.
ECOFLOW → ANKER →Planning method
Energy = watts × hours (DOE). 0.90 and 1.20 are Zaron planning assumptions.
ENERGY.GOV →Common questions
Straight Answers.
How long will a 5 kWh system last?
Divide usable energy by load watts. With Zaron's 90% planning assumption, 5,000 Wh becomes about 4,500 Wh, so a 500 W load runs about 9 hours and a 1,500 W load about 3 hours. Real results depend on the product, inverter, temperature and load.
Is 5 kWh the same as 5 kW?
No. 5 kWh is stored energy. 5 kW is power. A system's capacity (Wh or kWh) and its AC output (W or kW) are separate specifications, and the models compared here differ in both.
Can a 5 kWh system power a whole house?
Not at normal use. A battery of this size may support essential circuits for a limited time, depending on your loads. Whole-home backup may require transfer equipment and professional installation.
Do 5 kWh systems provide 240V?
The models compared here list 120V/240V output. Verify each outlet's rating and your appliance's nameplate. Panel connection and transfer equipment must follow manufacturer instructions and applicable electrical requirements. Never backfeed a panel.
Can I expand a 5 kWh system?
The three models compared here are listed as expandable with manufacturer batteries: the Jackery to 60 kWh, the EcoFlow DELTA Pro 3 to 12 kWh per unit (48 kWh as a system), and the Anker F3800 to 26.9 kWh (53.8 kWh as a system).
Did Zaron test these systems?
No. This page compares published manufacturer specifications. Zaron does not claim to have physically tested these products.
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