Buying Guide
How Many Appliances Can a 15kWh Lithium Battery Power?
A 15kWh battery stores 15,000 watt-hours of energy — in plain terms, that's enough to run 1,000 watts of appliances for about 15 hours, or 500 watts for about 30 hours, before recharging. Here's what that looks like with real household appliances.
Typical appliance power draw
These are general, approximate figures for common appliance types — always check your own appliance's actual rating, since models vary:
| Appliance | Typical draw |
|---|---|
| LED bulb | 10–15W |
| Ceiling/standing fan | 50–75W |
| LED/LCD TV | 60–150W |
| Laptop | 45–90W |
| Refrigerator | 100–400W running (with brief higher startup surge) |
| 1HP Air conditioner | 750–900W running (higher startup surge) |
Example: a typical home setup
Say you're running 5 LED bulbs (~65W), 2 fans (~130W), a TV (~100W), and a fridge (~250W average, accounting for its on/off cycling) — that's roughly 545W of continuous load. A 15kWh battery at that draw could theoretically supply around 27 hours before needing a recharge — though real-world results vary with battery age, temperature, and how efficiently your inverter converts power.
Matching battery to inverter
A 15kWh battery is most commonly paired with our 48V inverters (6kVA or 12kVA). If you haven't decided on inverter size yet, see our inverter sizing guide first — the two need to be matched together, not chosen separately.
Is 15kWh enough for a full day without power?
For moderate daily use (lights, fans, TV, fridge) it often is, based on the kind of estimate above — but for heavier loads like air conditioning or water pumping running for extended periods, you may want to consider our 20kWh option instead. See the full comparison on our battery guide.
Does solar charging extend this further?
Yes — if paired with solar panels, the battery can recharge during the day rather than relying solely on stored capacity, extending how long your system can run without grid power. Message us to discuss your specific setup.
Wattage and runtime figures above are general estimates for illustration only, not specifications for any particular product or guaranteed performance. Confirm sizing for your specific needs with us on WhatsApp before ordering.