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Zendure SuperBase V6400 sizing guide
First Zendure entry — a 6.4 kWh, 3,800 W whole-home-class unit on semi-solid-state cells (3,000+ cycles), expandable to 64 kWh with satellite battery packs. Here's exactly what it runs, how long, and which outages it covers — computed, not marketed.
~2 h to full at 3,600 W AC input; up to 3,000 W solar · 130 lb · 4× NEMA 5-20 (2 are 0ms UPS), 1× NEMA 6-20 240V, 1× NEMA TT-30, 4× USB-C (200W total), 2× USB-A, 1× car, 2× DC5521 · expandable with add-on batteries.
What the SuperBase V6400 runs — and for how long
| Appliance | Running | Runs it? | Approx. runtime |
|---|---|---|---|
| Refrigerator (modern) | 150 W (1,200 W surge) | yes | ~110 h |
| Chest Freezer | 100 W (1,000 W surge) | yes | ~166 h |
| CPAP Machine (no humidifier) | 40 W | yes | ~145 h |
| CPAP with Heated Humidifier | 60 W (95 W surge) | yes | ~121 h |
| Oxygen Concentrator | 350 W (600 W surge) | yes | ~17 h |
| Space Heater (1500 W) | 1,500 W | yes | ~3.9 h |
| Window AC (8,000 BTU) | 715 W (1,250 W surge) | yes | ~12 h |
| Window AC (12,000 BTU) | 1,100 W (1,800 W surge) | yes | ~7.5 h |
| Gas Furnace Blower (1/2 HP) | 800 W (2,350 W surge) | yes | ~14 h |
| Microwave (1000 W cooking) | 1,200 W | yes | ~4.8 h |
| Sump Pump (1/3 HP) | 800 W (1,500 W surge) | yes | ~36 h |
| Sump Pump (1/2 HP) | 1,050 W (2,150 W surge) | yes | ~28 h |
| Well Pump (1/2 HP) | 1,000 W (2,100 W surge) | yes | ~39 h |
Runtime uses each load's duty-weighted average draw against 90% of the rated capacity — conservative on purpose. Cyclic loads (fridges, pumps) run far longer than running-watts × capacity would suggest.
Outages the SuperBase V6400 covers
Common questions
What can the Zendure SuperBase V6400 run?
With 3,800 W of continuous output and a 5,000 W surge rating, the Zendure SuperBase V6400 runs refrigerator (modern), chest freezer, cpap machine (no humidifier), cpap with heated humidifier, oxygen concentrator, space heater (1500 w), and more. Its 6,438 Wh battery sets how long: a fridge for roughly a day, a CPAP for several nights.
How long will the Zendure SuperBase V6400 run a refrigerator?
A modern refrigerator averages about 53 W (it cycles ~35% of the time), so the Zendure SuperBase V6400's 6,438 Wh runs one for roughly 110 h before recharging.
Specs: Manufacturer published specifications (approximate; confirm on the current product page) (compiled 2026-10-05). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.