Explore the OnePlus Bullets Z2 featuring the E305A Processor and SGM41513 Power IC. Find battery details and helpful repair advice for your device.
Basic Information:
Model Name: OnePlus Bullets Z2
Model Number: E305A
Board Number: BTE326 Or BTE-326
Board Version: 3.1
Connectivity Technology: Wireless
Frequency Response: 20 KHz
Elevate your audio experience with the OnePlus Bullets Z2, model number E305A. Designed for music lovers and on-the-go users, these wireless earphones deliver exceptional sound quality and comfort, making them the perfect companion for any activity.
Featuring advanced connectivity technology, the OnePlus Bullets Z2 utilise a robust Bluetooth IC (BES2300) for seamless wireless connections. With a frequency response range of 20 kHz, these earphones capture a wide spectrum of sound, ensuring crystal-clear audio whether you’re listening to your favourite tracks, making calls, or enjoying podcasts. The impressive performance is backed by the board number BTE326 (or BTE-326) and board version 3.1, signifying the latest advancements in audio technology.
Comfort and style are paramount in the design of the Bullets Z2. The ergonomic fit ensures that the earphones sit securely in your ears, allowing for extended listening sessions without discomfort. The sleek design complements any outfit, making these earphones suitable for both casual and formal occasions.
The OnePlus Bullets Z2 are equipped with a durable build, ensuring they withstand the rigours of daily use. Whether you’re commuting, exercising, or relaxing at home, these earphones provide a reliable audio solution. The incorporation of the IC code number 24311049 and the manufacture code F435321H reflects the high manufacturing standards upheld by OnePlus.
Power IC Description:
Power IC Number: SGM41513
Power Ic Code Number: YTQF24
Manufacture Code: N21HC
Power IC Description - The SGM41513 is the key control administration IC in the OnePlus Bullets Z2. This IC handles the charging and releasing cycles of the battery, guaranteeing ideal execution and battery life span. Here’s a closer look at its roles:
➔ Constant Current/Constant Voltage (CC/CV) charging: This mode permits the battery to be charged at a higher current in the starting, followed by a consistent voltage stage as it nears full capacity.
➔ Thermal administration: This guarantees that the temperature remains within secure operational limits, cutting off control if the gadget overheats.
➔ Safety securities: Highlights like cheat, over-discharge, and short-circuit security are built into the IC to protect the inner circuits and battery from damage. The combination of 5V/2A input control and the SGM41513 IC permits quick battery charging within 10 to 30 minutes.
Bluetooth Connectivity Description:
Bluetooth Version And Adaptation: 5
Frequency Extend: 2.4GHz
Bluetooth Range: 10 Metres
Crystal Recurrence: 26MHz for exact flag timing
Audio Board Size: 12.4 Millimetres
Bluetooth Description - The Bluetooth IC BES2300 is capable of remote communication and handling of sound signals. Bluetooth 5.0 innovation offers a range of up to 10 meters and underpins features like Moo Energy and decreased control utilisation, which is fundamental for extending the earphones’ battery life.
➔ Audio Handling: Incorporates compression and decompression calculations for productive transmission and sound quality maintenance.
The BES2300 is coordinating with sound-preparing units and has a low-power plan, guaranteeing negligible battery depletion amid sound playback or standby mode. Also, it bolsters clamour cancellation and high-definition sound groups, improving generally sound quality.
The 26.00MHz Gem serves as the timing reference for the Bluetooth module. This precious stone oscillator guarantees that the communication and information transmission timing stays exact, avoiding issues like sound slack or association dropouts.
Audio System And Driver Section:
The OnePlus Bullets Z2 is prepared with 12.4mm drivers, which are bigger than normal for in-ear remote headphones. These drivers are fueled by the soundboard, which is associated with both the Bluetooth IC and control supply.
Driver Estimate: 12.4mm
Frequency Reaction: Up to 20 KHz, giving an adjusted sound profile that covers the lows, mids, and highs effectively.
Mini Switch and Microphone Section:
Mini Switch And Microphone Description- The headphones include a 4-pin mini-switch that permits clients to control different capacities such as play, delay, track switching, and call answering. The switch is associated with the primary circuit board and works based on the state of the Bluetooth IC, giving a client interface for collaboration with the device.
The headphones incorporate an SH-031 receiver. This receiver is capable of capturing sound amid calls and for voice partner interaction. It works in conjunction with the Bluetooth IC, which forms the sound and transmits it over the Bluetooth connection.
Battery and Charging Section:
Battery Model: BLE871
Battery Type: Lithium Polymer
Install Number of batteries: 1
Battery Code Number: 1ICP4/10/39
Battery Capacity: 129mAh
Battery Rate Capacity: 0.496Wh
Battery Normal Charge: 3.85 Volt
Battery Full Charge: 4.4 Volt
Charging USB Type: C- Type
Charging Connector: Redmi MI A2 Mobile Same Connector
Charging Voltage: 5 Volt
Charging Ampere: 2 Ampere
Charging Time Load Ampere : 0.2A (0.20mA) - 0.4A (0.40mA)
Charging Time: 10 - 30 Minutes
Battery And Charging Description:
➔ Charging Connector
The charging interface is a USB Type-C connector. The choice of a USB-C connector is in line with advanced smartphones, such as the Redmi MI A2, making it helpful for users to charge the earphones. The charging voltage is evaluated at 5V, whereas the most extreme charging current is 2A. This permits fast charging, ensuring that the headphones can be utilised after a brief charge time.
Input Voltage: 5V
Input Current: Up to 2A
➔ Charging Time: Between 10 to 30 minutes, depending on the remaining battery capacity and input load.
The charging prepare draws between 0.2A and 0.4A. Quick charging is accomplished through this controlled input current, overseen by the charging IC and control circuits. This framework guarantees the battery effectively comes to a full charge without overburdening the device.
➔ Charging IC and Diode Protection
The D4 diode serves as a defensive component in the charging circuit, anticipating the switch current stream from the battery into the charging harbour. This guarantees that the gadget is secured from inadvertent brief circuits or control surges during the charging process.
The charging IC, along with the D4 diode, controls the input voltage and current, guaranteeing that the battery gets the redress charge without surpassing its limits. The diode also ensures that other circuit components are not harmed during charging.
➔ Battery Life and Performance
The 129mAh lithium-polymer battery gives up to 30 hours of persistent playback time, which is amazing for a gadget of this size and capacity. The battery life is accomplished through the combination of effective control administration from the SGM41513 Control IC and the low-power plan of the BES2300 Bluetooth IC.
Normal charge voltage: 3.85V
Full charge voltage: 4.4V
Battery life: 30 hours (playback)
The Control IC directs the battery's charging cycles, guaranteeing that it charges rapidly without overheating or cheating. The battery's release rate is carefully overseen to maximise recess, indeed, with power-hungry sound drivers.
➔ Battery Administration System
The BLE871 battery shown is a lithium-polymer battery with a capacity of 129mAh. This battery has an evaluated capacity of 0.496Wh and works at an ostensible charge of 3.85V, with a full charge voltage of 4.4V. The battery is observed by the Control IC SGM41513, which gives a few key functions:
➔ Battery charging and releasing management
Power control to supply a steady voltage to other components, particularly the Bluetooth IC and sound-preparing units
Over-voltage security to avoid harm to the battery
Charging marker functionality
Components And Extra Information:
➔ SGM41513 Control IC
Manages charging and releasing of the battery.
Provides over-voltage, over-temperature, and short-circuit protection.
➔ BES2300 Bluetooth CPU IC
Handles Bluetooth communication and sound processing.
Operates on a 26MHz Precious stone for exact timing.
Supports Bluetooth 5.0 for low-latency and high-quality sound transmission.
➔ BLE871 Battery
129mAh lithium polymer battery with a 0.496Wh rating.
Provides 30 hours of recess with quick charging support.
➔ D4 Diode
Protects the charging circuit from switch current flow.
Works near the charging IC to guarantee secure charging.
➔ 12.4mm Sound Drivers
Provides high-quality sound with a wide recurrence response.
Tuned for adjusted sound yield over moo, mi, and tall frequencies.
➔ SH-031 Microphone
Captures sound for calls and voice commands.
Integrated with Bluetooth IC for sound processing.
➔ USB Type-C Charging Interface
Allows for quick and proficient charging at 5V/2A.
Component Interaction and Circuit Design
The centre of the OnePlus Bullets Z2 plan rotates around control productivity and sound quality. The SGM41513 Control IC not as it were handles the charging of the battery but also controls the control stream to other components, such as the BES2300 Bluetooth IC and sound drivers. This guarantees that each component gets a steady voltage supply while keeping the consumption low.
The BES2300 Bluetooth IC is the gadget's brain, preparing all sound signals and overseeing the remote network. The integration of a 26MHz Precious stone guarantees that Bluetooth communication remains steady and solid over a distance of 10 meters.