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BLUETTI Apex 300 · Modular Home Battery Backup
The Apex 300 starts as a 2,764.8Wh, 3,840W power station — enough to run a fridge, routers, and essential circuits through an outage — and scales into a full home backup system as needs grow, up to 58kWh and 11.52kW with add-on batteries. It switches to battery power in 0ms, runs 120V and 240V loads at the same time, and is backed by a 5-year manufacturer's warranty.
Rated for 3,840W continuous with up to 7,680W of lifting power for motor starts and other brief surges.
Runs both voltages simultaneously — even while charging — instead of forcing a choice between one or the other.
Switches to battery power fast enough to keep CPAPs, routers, and other sensitive electronics running without a blip.
Connect up to 3 units and 18 expansion batteries on the same platform — start small, grow into whole-home backup.
EV-grade LiFePO₄ cells rated for an estimated 17-year lifespan at 80% capacity retention.
Passes through enough power for HVAC systems, EV chargers, and other heavy household loads.
The BLUETTI app monitors status remotely, sends early extreme-weather alerts, and preps the system automatically.
Military-grade durability testing on top of UL, CE, FCC, and RoHS safety certification.
The Apex 300 on its own is a capable 3,840W power station — but the platform is designed to expand rather than be replaced. Add B300K or B500K expansion batteries for more storage, connect additional Apex 300 units in parallel for more output, and pair with a SolarX 4K controller for solar charging or a Hub D1 for extra USB and DC ports. The system scales from a single-unit backup to a full home setup covering 58kWh and 11.52kW without switching to a different product line.
Efficiency is built into the base unit itself: a magnetic-core transformer and five-stage efficiency system (BLUETTI calls it EnerBalance AI) keep idle power loss to around 20W, roughly 2–3× lower than typical for this class. Charging is flexible too — AC wall power, a car/alternator connection, a generator at up to 11.5kW, or solar through the SolarX 4K accessory — so the battery isn't tied to one recharge method.
| Battery capacity | 2,764.8 Wh |
| Chemistry | LiFePO₄ (EV-grade) |
| Continuous output | 3,840 W |
| Lifting (surge) power | 7,680 W |
| Output voltage | 120V + 240V simultaneous |
| AC outputs | 6 × 120V ports |
| AC wall charging | Included cable |
| Car/alternator charging | Included XT60 cable |
| Generator input | Up to 11.5 kW (120V/240V) |
| Solar input (with SolarX 4K)* | Up to 19.2 kW |
| UPS switchover | 0ms (up to 20ms by mode) |
| Cycle life | 6,000+ @ 80% retention |
| Estimated lifespan | ~17 years |
| Idle power loss | ~20 W |
| Bypass capacity | 12 kW |
| Durability testing | MIL-STD-810G |
| Weight | 83.78 lbs |
| Dimensions (L×W×H) | 20.67 × 12.87 × 12.6 in |
| Storage temperature | -4°F to 104°F |
| Water resistance | Not rated — keep dry |
| Warranty | 5 years |
*BLUETTI's own marketing shows two different figures for SolarX 4K solar input — 19.2kW in one place, 30kW in another, on the same page. Used the more conservative number; worth confirming current spec before publishing. Certifications: UL, CE, FCC, RoHS.
No. It should be kept dry during use — it's not rated for direct rain or water exposure.
Up to 58kWh of storage and 11.52kW of output by connecting 2–3 Apex 300 units with up to 18 expansion batteries total — scaling from a single-unit backup to a full home system on the same platform.
Not on its own — the Apex 300 doesn't have a built-in solar charge controller. Solar charging requires the separate SolarX 4K accessory.
Several ways: AC wall power (cable included), a car or alternator connection (XT60 cable included, with Charger 1 or Charger 2 available for faster alternator charging), a generator at up to 11.5kW, or solar through the SolarX 4K accessory.
Yes — expansion batteries (B300K, B500K), the SolarX 4K solar controller, Hub D1 for extra ports, and Hub A1 or an AT1 panel for parallel connections and home panel integration.
5 years, covering defects in materials, workmanship, and performance.
Free shipping on all orders within the mainland US (Hawaii, Alaska and overseas territories excluded - a freight forwarder is required). Orders are confirmed by email immediately; we verify stock with the supplier before your card is charged. In-stock items ship within five business days, with tracking emailed within 24 hours of shipment. Typical lead time from purchase to delivery is 5-10 business days; freight transit is usually 4-6 business days. Minimum order value is $69.
You have 30 days from the delivery date to initiate a return (35 days for orders placed Nov 25-30 and Dec 25-31). Items must be unused, in original packaging with tags attached, and returns require prior authorization from our team.
To start a return: +1 (307) 317-7213, hello@ecosolarkits.com, or live chat. Read the full return and refund policy
