Dabbsson DBS3500 Portable Power Station
SVT Score, Mid
3,430 Wh LiFePO4 station at 90.5 lb with a 3,600 W inverter, 2,400 W of solar and a 15 ms EPS; one unit expands to 14,070 Wh at 120 V, and 240 V needs a second unit.
$1,599
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Usability
7.1 out of 10It stores 3,430 Wh, in the upper band of the large tier below 3,500 Wh, so it scores 8 on capacity.
Its inverter is rated 3,600 W continuous with a 7,200 W surge at 120 V, so it scores 10 on power output.
Dabbsson states a full wall charge in about 2 hours at 1,800 W and 2,400 W of solar input, so it scores 8 on recharging.
Dabbsson's US spec table rates the cells for 4,500 cycles to 80 percent and the US manual for 4,000, so on the lower figure it scores 8 on battery life.
It switches to battery within 15 ms and one unit takes two DBS5300B batteries for 14,070 Wh, but Dabbsson sells no transfer switch or home panel for it, so it scores 6 on backup readiness.
Its US manual prints an ETL mark with no listing number and no certifier directory lists it by model, so it scores 2 on verification.
Better on verificationEcoFlow DELTA ProSGS lists it to UL 2743. $1,899Scores 8.0Dabbsson gives it three years and extends it to five years on registration, applied automatically to orders on dabbsson.com, so it scores 8 on warranty and support.
Dabbsson's US policy gives each station in its warranty table three years plus two on registration, five in all, and takes unused US orders back within 30 days.
$1,599.00 at dabbsson.com.
3,600 W at 120 V; 240 V takes A second unit
The DBS3500 is Dabbsson's 3,430 Wh LiFePO4 station, a 90.5 lb unit on wheels with five 120 V outlets including a TT-30, 16 ports in all and app control.
It suits a buyer who wants 3.4 kWh and 3,600 W at 120 V for outages, an RV or a workshop, with 2,400 W of solar, and who will buy a second unit for 240 V and a transfer switch elsewhere.
Strengths
- 3,600 W continuous with a 7,200 W surge
- 2,400 W solar input at 12 to 150 V
- AC and solar together at 3,400 W
- EPS switchover within 15 ms
- Takes two DBS5300B batteries14,070 Wh per unit
- Two units link to 240 V and 7,000 W
Drawbacks
- Dabbsson sells no transfer switch or home panelits install guide points to third-party Reliance switches
- One unit gives 120 V onlythe page's 240 V and 7,000 W need two units and the A35S connector
- The page's 28,140 Wh needs two units and four DBS5300B batteries; one unit reaches 14,070 Wh
- The US spec table gives 4,500 cycles and 90.5 lbthe US manual 4,000 cycles and 89.7 lb
- 90.5 lbmoved on two wheels
- The US product page still runs "valentine sale" free-300E and free-600L bullets beside the free 300E in the variant title
- The US manual prints an ETL markbut Intertek's directory does not list it
Specs
- Capacity3,000-3,999 Wh
- AC Output3,000-3,999 W
- Output Voltage240 V by linking two units
- Battery ChemistryLiFePO4
- Rated Cycles4,000-5,999 cycles
- Safety ListingClaimed only
- Solar Input2,000-3,999 W
- Backup Switchover11-20 ms
- Warranty5 Years
- Expandable To10-19.9 kWh
- Weight90.5 lb
At a glance
- Five AC outlets incl. TT-30
- Wheels and a pull handle
- Wi-Fi and Bluetooth app
Dabbsson is the brand of Shenzhen Daipusen New Energy Technology Co., Ltd., which filed the DABBSSON mark at the USPTO, and dabbsson.com is run by Dabbsson Limited under Hong Kong law.
It sells direct from dabbsson.com and through listings on Amazon US and Walmart.com.
The Dabbsson DBS3500 is a 3,430 Wh LiFePO4 station, sold as "EV semi-solid state" cells, rated 3,600 W continuous and 7,200 W surge at 120 V from five pure sine wave AC outlets, four standard and one 30 A NEMA TT-30 for an RV, with three USB-C ports (two 100 W, one 30 W), three USB-A ports (two 18 W, one 12 W), two DC5521 outlets, a 12 V car outlet and two Anderson outlets (12 V 30 A and 24 V 15 A), 16 ports in all. Its US manual states a full wall charge in about 2 hours at up to 1,800 W, set from 200 to 1,800 W (600 W by default), 2,400 W of solar at 12 to 150 V, which the US page puts at 1.91 hours to full, and 3,400 W of AC and solar together, about 2 hours. The US spec table rates the cells for 4,500 cycles to 80 percent and the US manual for 4,000, and Dabbsson's FAQ counts 500 of the 4,500 as "extra cycles with BMS". It switches to battery within 15 ms in EPS mode. The US manual allows two DBS5300B batteries per unit, 8,750 Wh with one and 14,070 Wh with two; the 28,140 Wh and the 240 V, 7,000 W output on the US page need two DBS3500 units, four batteries and the A35S parallel connector, so one unit gives 120 V only. Dabbsson's transfer-switch guide names third-party Reliance switches as a reference rather than one it sells. It weighs 90.5 lb by the US spec table (89.7 lb in the manual), measures 20.9 x 12 x 15.4 in on two wheels with a pull handle, and connects to the Dabbsson app by Wi-Fi and Bluetooth. The US store's unit variant includes a free 300E station in its title, a promotion of the day. No tester's measured capacity or charge time for the DBS3500 was found; CNET measured 86 percent usable on the smaller DBS2300 (March 2026). Dabbsson gives it three years plus a two-year extension on registration, five years in all, applied automatically to orders on dabbsson.com.
