1. Introduzione
The BLUETTI B300K is a 2764.8Wh LiFePO4 battery pack designed to expand the capacity of compatible BLUETTI solar generators, specifically the BLUETTI Apex 300. This battery pack provides additional energy storage for various applications, including home backup, emergency power, and off-grid use. It features advanced battery cell technology and a robust design for reliable performance.
2. Linee guida di sicurezza
For safe operation and to prevent damage, always adhere to the following guidelines. Refer to the comprehensive user manual of your primary BLUETTI Apex 300 solar generator for detailed safety instructions and warnings.
- Non smontare, riparare o modificare l'unità.
- Tenere l'unità lontana da fuoco, acqua e temperature estreme.
- Assicurare una ventilazione adeguata durante l'uso e la ricarica.
- Use only BLUETTI-approved cables and accessories.
- Tenere fuori dalla portata dei bambini e degli animali domestici.
The B300K utilizes ultra-safe LiFePO4 battery cells and a premium Battery Management System (BMS) for enhanced reliability and durability.
3. Contenuto della confezione
Verificare che tutti gli articoli siano presenti al momento del disimballaggio:
- BLUETTI B300K Expansion Battery (x1)
- CA90 Battery Extension Cable for BLUETTI Apex 300 (x1)
- Manuale utente (questo documento) (x1)

Figure 3.1: BLUETTI B300K Package Contents. Includes the B300K battery unit, the CA90 battery extension cable, and the user manual.
4. Caratteristiche del prodotto
- Universal Expansion Compatibility: The B300K seamlessly connects with the Apex 300 through its dedicated expansion port, allowing for flexible capacity upgrades.
- Next-Generation LiFePO4 Cells: Equipped with advanced cells providing at least 4,000 cycles to 80% capacity, offering extended lifespan and improved performance at high temperatures.
- Next-Gen Design Architecture 2.0: Features a wireless internal design that minimizes the risk of failure and maximizes space efficiency, contributing to a more compact and portable product.
- Built-In USB Charging Port: Includes a USB-A 12W charging port for direct device charging, functioning as a large power bank.

Figure 4.1: Internal components of the BLUETTI B300K, highlighting its robust and efficient design.
5. Configurazione e connessione
The B300K is designed for straightforward integration with your BLUETTI Apex 300. Ensure both units are powered off before making connections.
- Locate the expansion port on your BLUETTI Apex 300 and the corresponding port on the B300K.
- Connect the two units using the provided CA90 battery extension cable. Ensure the connection is secure.
- Once connected, the B300K will be recognized by the Apex 300, expanding its total battery capacity.

Figure 5.1: Modular power expansion with the BLUETTI B300K and Apex 300.

Figura 5.2: Esample of a large-scale power setup with multiple B300K units.
6. Istruzioni per l'uso
The B300K operates in conjunction with your BLUETTI Apex 300. Power management and output functions are primarily controlled via the Apex 300 unit.
- Accensione/spegnimento: To activate the B300K, press and hold its power button for approximately 3 seconds. The battery indicator lights will illuminate.
- Ricarica: The B300K charges automatically when connected to a powered-on Apex 300 unit. The Apex 300 can be charged via solar panels, AC wall outlet, or other compatible sources.
- Uscita USB: The integrated USB-A port (12W) on the B300K can be used to charge small electronic devices directly.
- Monitoraggio: Monitor the B300K's status and charge level through the display on your connected Apex 300 unit or via the BLUETTI smartphone application.

Figure 6.1: The B300K functioning as a power bank for portable devices.
Video 6.1: Official BLUETTI video demonstrating the Apex 300 and its modular power expansion capabilities, which includes the B300K battery pack. This video illustrates various use cases and the system's versatility for home and outdoor power needs.
7. Manutenzione e cura
Proper maintenance ensures the longevity and optimal performance of your B300K battery pack.
- Durata della batteria: The B300K is designed to provide at least 4,000 charge cycles to 80% of its original capacity. This means it can be fully charged and discharged thousands of times before significant degradation occurs.
- Magazzinaggio: If storing the unit for an extended period, ensure it is charged to approximately 50-80% and stored in a cool, dry place away from direct sunlight. Recharge every 3-6 months to maintain battery health.
- Pulizia: Utilizzare un panno asciutto e morbido per pulire l'esterno dell'unità. Non utilizzare prodotti chimici aggressivi o materiali abrasivi.
8. Risoluzione Dei Problemi
If you encounter issues with your B300K, consider the following general troubleshooting steps:
- L'unità non si accende: Ensure the power button is pressed and held for 3 seconds. Verify the unit has sufficient charge.
- Non caricando: Check all cable connections between the B300K and the Apex 300. Ensure the Apex 300 is functioning correctly and receiving power from its input source.
- Problemi di connessione: Disconnect and reconnect the CA90 cable. Ensure the ports are clean and free of debris.
For more specific issues or persistent problems, refer to the troubleshooting section of your BLUETTI Apex 300 user manual or contact BLUETTI customer support.
9. Specifiche tecniche
| Specificazione | Dettaglio |
|---|---|
| Modello | B300K |
| Capacità | 2764.8 Wattora |
| Tipo di batteria | LiFePO4 |
| Ciclo di vita | Oltre 4,000 cicli all'80% della capacità |
| Peso dell'articolo | 65 libbre (circa 29.5 kg) |
| Dimensioni del prodotto (L x P x A) | 20.67" x 12.87" x 8.23" (circa 52.5 cm x 32.7 cm x 20.9 cm) |
| Uscita USB-A | 12W |
| Compatibilità | BLUETTI Apex 300 Solar Generator |
10. Garanzia e supporto
The BLUETTI B300K comes with a 3-year coverage period. For any inquiries, technical assistance, or warranty claims, please contact BLUETTI customer support through their official channels. BLUETTI maintains widespread sales and after-service networks to assist users.
For the most up-to-date support information, visit the official BLUETTI websito o fare riferimento ai recapiti forniti sulla confezione del prodotto.





