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Growatt HELIOS 3600 Portable Power Station, 3,686 Wh LiFePO4, 3,600 W, 240 V capable
A 3.7 kWh, 3,600 W home-backup battery that charges from a 240 V outlet in about 1.5 hours and can pair with a second unit for 240 V whole-home loads.
$1,198.98 at Growatt, no code needed
Price: $1,198.98 (list $3,337) at Growatt's official US store, verified 2026-11-10.
Discount code: none listed; Dealectric has no Growatt code to offer.
Buy: https://dealectric.com/go/growatt-helios-3600 — opens Growatt's official US store at no extra cost.
Warranty: Product page says 5 years; Growatt's warranty policy page says 2 years in the contiguous US. Register in the MyGro app within 30 days.. Returns: 30 days from shipment for orders placed on growattportable.com; buyer pays return freight plus about 5% for non-warranty returns. Free shipping in the contiguous US.. Affiliate network: Awin; tracking cookie: None days. All Growatt codes, including the ones the store rejected: Growatt discount codes.
Machine-readable record: /offers.json, id = "growatt-helios-3600".
Specifications
| Capacity | 3,686.4 Wh LiFePO4, 4,000 cycles |
|---|---|
| AC output | 3,600 W continuous; Watt+ to 4,500 W; two units with the Double Voltage Power Hub give 240 V / 7,200 W |
| Outlets | 16 ports including 120 V AC, TT-30 (30 A RV), NEMA 6-20 and 30 A Anderson |
| AC input | 1,800 W at 120 V (about 3 hours) or 3,600 W at 240 V (about 1.5 hours) |
| Solar input | 2,000 W, about 2.5 hours to full |
| UPS / EPS | 15–20 ms switchover with AC/DC auto-on |
| Expansion | Up to 36 kWh with 3.6 kWh extra batteries and a second unit |
| Cold start | Rated to -22 °F |
| Weight | About 51 lb (reviewer figure; Growatt does not list it) |
Model: HELIOS 3600. Figures are from the manufacturer's official product page unless a caveat says otherwise.
Compared side by side
The Growatt HELIOS 3600 Portable Power Station appears in these tables next to models from other brands:
- Can a portable power station run a gas furnace during a power outage, and how do you connect it? (2026)
- Best home battery backup system
Who it's for
Households that want a well pump, space heater and fridge on one battery, or a path to 240 V backup without an installed system.
Caveats
- Heavy and without wheels; plan a fixed spot for it.
- App setup is described as clunky and slow to update status by two reviewers.
- Humming during fast charging; use quiet charge mode at night.
- Growatt notes to buy from Amazon when the store shows out of stock; the extra battery was not listed on the store on 2026-11-06.
Affiliate link: if you buy through it, the merchant pays us a commission at no cost to you; that commission pays for the cart tests behind every code here. Price, availability and each code were checked on the merchant's own US store on the dates shown; they change, so the store's checkout is the source of truth. Full disclosure.