Bq40370 ^hot^ Jun 2026

Topic Tag: dell – Laptop Battery Analyzer and Repair Forum

| Resource | Link / Document number | |----------|------------------------| | Datasheet | TI: SLUSC73 (bq40370) | | Technical Reference Manual | SLUUBF8 (bq40370 TRM) | | bqStudio software | TI.com (free) | | EV2400 interface | TI store | | CEDV calculation spreadsheet | TI application note SLUA777 |

The (often referenced in association with TI's BQ40 series) is a crucial, specialized battery management IC (Integrated Circuit) commonly found in Dell laptop batteries, including popular models like the WDX0R , YRDD6 , and J60J5 . As laptops become thinner and battery life more critical, these ICs act as the "brain" of the battery pack, managing charging, monitoring cell health, and ensuring safety.

| Feature | Specification | |---------|---------------| | Cell count | 2S, 3S, or 4S (Li-Ion/Li-Po/LiFePO₄) | | Communication | I²C (100 kHz / 400 kHz) | | Gas gauge algorithm | CEDV (Compensated End of Discharge Voltage) | | Protection features | Overvoltage, undervoltage, overcurrent (charge/discharge), short circuit, overtemperature | | Cell balancing | Passive, integrated (internal or external FETs) | | Current sensing | External sense resistor (typical 5–10 mΩ) | | Operating voltage | 4.5 V to 25 V (pack voltage) | | Temperature range | –40°C to +85°C (operating) | | Package | 24-pin TSSOP (BQ40370PW) | bq40370

Could you provide more details or clarify what "bq40370" refers to? Is it a product code, a model number, a specific topic, or perhaps a typo? Knowing more about it will help me generate a post that's informative, helpful, or interesting to your audience.

This happens when the IC enters a .

The BQ40370 supports LED display functionality (when implemented in the design). Upon detecting a high-to-low transition on the DISP pin, it can display the state-of-charge via 4-5 LEDs, according to the BQ40Z50-R4 Technical Reference Manual. BQ40370 Battery Repair and Unlocking Topic Tag: dell – Laptop Battery Analyzer and

: The SMBus line drops safety flags, completely shutting down both the Charge and Discharge Field-Effect Transistors (FETs).

The following table summarizes common issues reported by users and repair technicians working with BQ40370-based batteries:

By blending these two models, the bq40370 delivers highly accurate Remaining State of Charge (RSOC) tracking without demanding long, uninterrupted cell relaxation periods during a system reboot. Key Technical Characteristics [Solved] Dell WDX0R BQ40370 Is it a product code, a model number,

: The core algorithm determines remaining battery capacity based on modeling the battery’s voltage discharge curve under varying loads and temperatures. It uses pre-programmed voltage trip points (EDV0, EDV1, EDV2) to dynamically adjust when the battery is nearing zero capacity.

(Official Texas Instruments evaluation interface modules) CP2112 (A cost-effective USB-to-I2C bridge controller) 2. Specialized Software