Bluetti B300K2 for APEX 300 Expansion Battery

PB Tech price

$ 1,999 .13

+GST

$ 2,299 .00

inc GST

Bluetti B300K2 for APEX 300 Expansion Battery

Brand: Bluetti
MPN: B300K2 for APEX 300
Part #: BATBTT1045
UPC:

PB Tech price

$ 2,299 .00

inc GST

+GST inc GST

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No store stock available.

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Delivery: Order now and it ships on 24 Feb When will I receive it?

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Four payments of $580.50 per fortnight*

Finance from $20.79 per week*

Get what you want at a price you can afford. Choose a finance term below to see the weekly repayment amount and apply online during checkout or in-store.

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*Weekly payments are indicative only and based on a retail price of over a loan term of months at an interest rate of % p.a. and include a monthly service fee and a establishment fee (excludes optional Payment Protection Insurance).The total amount payable over the term of the loan is . Details of finance (including weekly payments, the total amount repayable over the term of the loan, interest rate and any applicable fees) can be confirmed with a detailed quote. Full disclosure of all of the terms of your finance will also be provided to you in the Finance Now disclosure statement for your consideration prior to confirmation of your purchase. All finance is subject to Finance Now terms and conditions and approval criteria.

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24 months interest FREE available*

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Brand: Bluetti
MPN: B300K2 for APEX 300
Part #: BATBTT1045
UPC:

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Capacity (VA)

Capacity (Watts)

Form Factor

Portable

Outlets

Recharge Time

6 Hours

Run Time (Full Load)

20 Minutes +

Run Time (Half Load)

20 Minutes +

Transfer Time

No Break

View full specs

Returns & Warranty Bulk Quote Print Page

Features

A Power Ecosystem for Every Lifestyle

Home Battery System

From a simple plug-in setup to full-home battery backup, build the system that matches your home's size and energy needs.

RV & Van Life Power

From charging devices to running small appliances, enjoy home-like comfort with plug-and-play setups built for life on the road.

True Off-Grid Freedom

Store solar energy, run essentials, and stay connected - all with a setup that's easy to expand and customize for your off-grid lifestyle.

Home Backup Power Solutions: Choose Your Protection Level

Essential Protection

Keep the basics running when the grid goes down - fridge, lights, WiFi, and more. Quick plug-and-play setup for instant peace of mind.

Whole-Home Battery Backup

Run high-demand appliances through long outages with 7,680W of reliable power. No hardwiring, just plug in and enjoy seamless, automatic backup.

A Home Battery Backup That Pays for Itself

Turn sunshine into serious savings. With up to 4,000W solar input*, the Apex 300 helps you cut down your energy bills fast - paying for itself in just 2 years. After that, the savings are all yours.

* Requires a SolarX 4K.

Flexible Power, Effortless Expansion

The Apex 300 offers a modular design that grows with your needs. Connect 2-3 units and up to 18 batteries for up to 11.52kW output and 58kWh capacity. Start small, expand as needed, and customize your power system without complicated upgrades or extra hassle.

Multiple Ways to Recharge, All Fast

Solar Charging

Get up to 80% in just 55 minutes, and a full charge in 75 minutes with 2,400W of solar power. With SolarX 4K, enjoy ultra-fast solar replenishment, reaching up to 30,000W.*

* Requires 3 Apex 300 units and 3 SolarX 4K units.

Note: Data tested by BLUETTI Labs. Actual charging times may vary.

Generator Charging

When solar power isn't an option, use a generator to fully charge your Apex 300 in 65 minutes with 3,450W of power. Stay ready no matter the conditions.

Note: Data tested by BLUETTI Labs. Actual charging times may vary.

TurboBoost AC Charging

Need a quick boost? Enable Turbo Charging and get 80% in just 45 minutes, and a full charge in 70 minutes - all using just one standard home wall outlet.

Note: Data tested by BLUETTI Labs. Actual charging times may vary.

Charge on the Go

Harness your alternator's excess power - no waste, no impact on fuel or engine performance. Use 560W to fully charge in 5.5 hours. Add solar, and you can charge up to 1,760W, reaching full power in just 1.8 hours.

Note: Data tested by BLUETTI Labs. Actual charging times may vary.

Super-Fast Solar Charging

With BLUETTI's SolarX 4K-the world's first 4,000W solar charge controller, you can harness 4kW-19.2kW of solar input. Easily integrate it with existing rooftop solar systems via AC coupling, making it perfect for DIY enthusiasts who want flexible, high-power charging.

Apex 300 + B300K + SolarX 4K

Fully charges in just 1.9 hours with 4,000W solar power, giving you quick access to energy for everyday devices like lights, small appliances, and electronics.

Note: Data tested by BLUETTI Labs. Actual charging times may vary.

2/Apex 300 + 4/B300K + 2/SolarX 4K

Powers up in 2.0 hours with 8,000W solar power, offering reliable energy for larger appliances, tools, and extended use - ideal for RVs or off-grid living.

Note: Data tested by BLUETTI Labs. Actual charging times may vary.

3/Apex 300 + 9/B300K + 3/SolarX 4K

Reaches full power in just 1.6 hours, providing ample energy for heavy-duty devices like air conditioners, refrigerators, or even home backup systems.

Note: Data tested by BLUETTI Labs. Actual charging times may vary

Smart, Simpler Control with BLUETTI App

With the BLUETTI app, you're always in control. Get early alerts to prepare for outages, track your energy savings, and monitor power backup status in real time. AI-powered features and quick OTA updates keep your system up-to-date. Plus, remote access lets you manage your home's power from anywhere, anytime, for ultimate convenience and peace of mind.

Built for Durability and Efficiency

With the EnerBalance AI system, enjoy up to 6,000 cycles with 80% capacity retention. Our magnetic-core transformer and five-stage efficiency tech cut idle loss to 20W, maximizing every charge. 20ms fast switching keeps sensitive devices like CPAP machines running without interruption. Plus, it's military-grade tested (MIL-STD-810G) for tough, long-lasting performance.

Specifications

BATTERY INFO

Capacity

8294.4Wh (51.2V/54Ah)
(8294.4Wh Total Capacity when Apex300 is joined with 2x B300K batteries)

Type

LiFePO₄

Life Cycles

6,000+ cycles to 80% original capacity

Shelf-life

Recharge to 40%-60% every 3-6 months

Management System

MPPT controller, BMS, etc.

OUTPUT

Inverter Type

Pure sine wave

Lifting Power

7,680W

AC Outlets

3,840W Max. in total, 230V, 15A Max. each port

Cigarette Lighter Port / DC5521

2 x 12V/10A; 24V/5A Cigarette lighter port
2 x 12V/10A; 24V/5A DC5521
* Requires a Hub D1 which is rated at 700W.

USB-C Port

2 x 100W Max.
* Requires a Hub D1 which is rated at 700W.

USB-A Port

2 x 15W, 5V/3A
* Requires a Hub D1 which is rated at 700W.

Anderson Port

1 × 12V/50A; 24V/25A
* Requires a Hub D1 which is rated at 700W.

INPUT

AC Input

Standard: 2,300W (10A) Max: 3,450W (15A)

Solar Input

1,200W*2, 12-60VDC, 20A*2

Car Input

12V or 24V via cigarette lighter port

Maximum Input

Apex 300: 3,840W Max.
Apex 300 + 1~6 B300K: 6,240W Max. (AC + Solar)

GENERAL

App Control

Yes, via WiFi & Bluetooth

Scalability

Up to 6 x B300K / B300S / B300 per unit

Pass-through Charging

Yes

Weight

83.78 lbs / 38 kg

Dimensions (L x W x D)

20.67 x 12.87 x 12.6 in / 525 x 327 x 320 mm

Charging Temperature

32°F to 104°F / 0°C to 40°C

Discharging Temperature

-4℉ to 104℉ / -20℃ to 40℃

Storage Temperature

-4℉ to 104℉ / -20℃ to 40℃

Certification

FCC, UL, TELEC, CE, NTC, RCM, LOA, ICASA

Warranty

5 Years

IN THE BOX

Included Items

Apex 300 Portable Power Station x 1
Bluetti B300K Expansion Battery x 2
AC Charging Cable (5.91ft / 180cm) x 1
Car Charging Cable (Cig lighter - XT60, 2.41ft / 73.5cm) x 1
Grounding Screw (M5*10) x 1
User Manual x 1

Manufacturer Part No:

B300K2 for APEX 300

Brand:

Bluetti

Product Type:

Expansion Battery

UPC

Product Family:

Shipping Weight:

40 kg

PB Part No:

BATBTT1045

Product Model:

B300K2 for APEX 300

Warranty: 48 months *
* Warranty period is as stated above unless the manufacturer has chosen to specify a longer period.
All warranties are return to base unless otherwise specified.

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Delivery & Pick-up

Delivery Estimates

The estimated time to ship for each product we sell is detailed on the individual product page just underneath the price. From when your items ship, products typically arrive within 1-2 working days for North Island deliveries and 2-3 working days for South Island deliveries. Rural deliveries may take an extra working day. Bulk & hazard deliveries may take an extra 2-7 working days and tracking links for these deliveries can take a few days to generate.

Same Day Delivery

Need your order in a hurry? PB Tech offers same day delivery for Auckland, Hamilton, Wellington and Christchurch. Simple place your order before 1pm (provided your items are in stock) and select one of our same day delivery options 'Evening Delivery' or 'Urgent 3-hour Delivery' in the checkout. T&C's apply. Learn more about Same Day Delivery.

Shipping Costs

Shipping costs vary based on your location and the items being shipped and in some cases shipping may even be FREE.

To calculate what the shipping costs will be for your order, add the items you are interested in to your cart, view the Shopping Cart page, and select your 'Delivery Area' to calculate the shipping cost.

Shipping Security & Insurance

All orders shipped by PB Tech are sent via a courier with a signature required for each delivery. In some cases, and only where you have given the courier company permission to leave orders at a designated location, your order may be delivered without requiring a signature. All orders sent by PB Tech are fully insured in the unlikely event that your item(s) are damaged or go missing in transit.

1 Hour Store Pick-up / Click & Collect

You can pick-up your online order from any of our stores nationwide. You can select which store you want to pick up from at the checkout. Provided the store you select has stock and there's no hold-ups with payment we will have your order ready within 1 hour (during normal trading hours for that store) otherwise it may take up to 5 working days to transfer the stock to the store so your order can be fulfilled. Learn more about our Click & Collect process.

Overseas Shipments

PB Tech regularly ships overseas to Australia and beyond. If you are located in Australia, you can order directly from our Australian site www.pbtech.com/au. If you are from another country you can order from www.pbtech.com

Returns & Warranty

7 day right of exchange

If you change your mind after making a purchase, or realise you have ordered the incorrect item, you can enjoy the peace of mind that we offer a 7 day exchange policy (excludes special order items, software and evouchers).

To exchange a product, goods must be sealed and unopened, with packaging in original condition, accompanied by a valid receipt dated no more than 7 calendar days from when you request an exchange. A 20% restocking fee may be applied where goods are not returned in sealed, original packaging condition.

If there is not a suitable product that can be exchanged for your returned item you will be offered a credit on your account or gift card based on the value paid at the time of purchase. Items purchased on finance cannot be exchanged for a gift card.

Hassle free warranty service

If your product develops a fault within the manufacturer warranty period, you can either contact the manufacturer directly (some manufacturers provide a high level of warranty service - including free pickup or in some cases onsite repair), or return to one of our services centres / stores. Where the product has been directly imported by PB Tech, you need to contact us directly or present the product at any one of our service centres / stores together with your proof of purchase.

If your product develops a fault outside of the manufacturer warranty or PB Tech warranty period, we offer a full repair service and are an authorised repair agent for leading brands such as Samsung, HP, Toshiba, Lenovo and more.

Returning a product / making a warranty claim

To contact the manufacturer directly to troubleshoot your product or to request a warranty repair, please view the list of manufacturer / brand warranty contacts (for products imported directly by PB Tech please return to us directly by completing our request a return form).

To return a product to PB Tech directly, please complete our request a return form.

Or view our returns policy for more information.

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