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Nie, dziękuję Przekieruj mnie tamhow to use dji battery killer?
• DJI “Battery Killer” is an unofficial PC-based service tool that interfaces with the battery-management-system (BMS) inside DJI Intelligent Flight Batteries (e.g. Mavic, Spark, Air, Mini) via an I²C/SMBus adapter (usually a Silicon-Labs CP2112 USB-HID board).
• It is used to clear protection flags (PF / PF2), unlock hibernated packs and sometimes reset cycle counters—NOT to destroy a battery.
• Basic workflow: (1) verify that all cells are still healthy, (2) connect GND/SDA/SCL of the CP2112 to the battery test pads, (3) power the BMS with ≈ 8-10 V if the pack is completely flat, (4) run the Battery-Killer software → Connect → Unseal → Clear PF (+ PF2) → Reset Chip → Seal, (5) re-assemble and charge the pack under close supervision.
• The process voids every warranty and, if done incorrectly, can result in fire, explosion, or permanent battery damage. Proceed only if you fully understand Li-ion safety and local regulations.
Why DJI batteries “brick”
• Deep discharge (< 3.0 V/cell) or long storage forces the TI bq-series BMS to assert Permanent-Failure flags.
• Temperature, cell imbalance or firmware glitches can set other lockout bits.
• Once set, the pack refuses to charge over the main connector—appearing “dead”.
Architecture you must talk to
• Cells: 3S, 4S or 6S Li-ion-poly packs.
• BMS: TI bq9003 / bq40z307 / bq30z55 etc. accessed by SMBus @ 100 kHz.
• Security: sealed/unsealed modes with 32-bit keys; PF, PF2, OVP, UVP, OCD registers; cycle counter in DF memory.
Hardware required
┌────────────┬────────────────────────────────────────┐
│ Item │ Purpose │
├────────────┼────────────────────────────────────────┤
│ CP2112 │ USB-HID ⇄ SMBus/I²C master (3.3 V) │
│ 9 V PSU │ Wakes BMS if pack < 6 V (limit 0.3 A) │
│ Jumper/pogo│ SDA, SCL, GND connections │
│ Multimeter │ Confirm cell voltages & continuity │
│ Li-Po bag │ Fire-safe containment while testing │
└────────────┴────────────────────────────────────────┘
A fresh 9 V alkaline or bench supply set 8–9 V, current-limited.
Typical pin-out examples (view on battery header)
• Mavic Pro: ① SDA, ② SCL, ③ GND, ④-⑥ pack V+.
• Spark: pads hidden under plastic cap; consult community diagrams.
Always meter first—DJI changed layouts between revisions.
Software sequence (latest GUI v0.9.8, Windows/macOS)
First recharge protocol
• Insert into OEM DJI charger; observe current, temperature and cell delta.
• Abort if any cell rises > 4.25 V or temp > 45 °C.
• Run a low-stress flight (hover) and re-measure capacity; anything < 70 % of nominal → retire the pack.
Failure modes & how to detect
• 0 V or reverse-voltage cell → trash; don’t revive.
• > 150 mV imbalance at storage voltage → high internal resistance; likely to sag under load.
• PF clears but gauge reads “Unknown” → flash corruption; you need TI bqStudio + EV2400 for deeper work.
• Community‐maintained forks (2023-2024) add automatic chip detection, macOS support and CLI batch mode.
• Some new DJI packs (Avata 2, Air 3) encrypt SMBus traffic with SHA-1 challenge–response; Battery-Killer currently cannot unlock them.
• Manufacturers are moving toward epoxy-potted BMS and CAN-bus communication, reducing the effectiveness of such tools.
• Professional repair shops now offer “BMS re-flash” services based on the same principle but with liability coverage.
• Analogy: Think of the BMS as a fuse with a microcontroller; PF = blown fuse bit. Battery-Killer simply clears that non-volatile bit, telling the pack “fuse is OK”, but it does NOT heal the underlying chemistry.
• Mathematical note: Safe-storage SoC ≈ 0.55 × C_nominal; corresponds to 3.78 V ± 0.05 V/cell.
• Thermal runaway threshold for Li-polymer is ≈ 120 °C; sustained current while locked can’t occur, but erroneous revival can enable a compromised cell to reach that region quickly.
• Reverse-engineering firmware may violate DJI EULA and local DMCA-style laws.
• Selling revived packs without disclosure could breach consumer-safety statutes.
• Transporting self-repaired lithium batteries by air cargo is prohibited under IATA PI 965 Section II.
• Always comply with WEEE / e-waste regulations for disposal.
• No software can restore lost capacity or correct internal dendrite growth. A successfully “unbricked” battery may still fail in flight.
• DJI firmware updates may re-lock altered batteries.
• Community tools are open-source—use versions from reputable repositories to avoid malware.
• Explore TI bqStudio with an EV2400 adaptor for deeper diagnostics.
• Investigate cell-level impedance spectroscopy (EIS) to quantify remaining life.
• Monitor open-source projects adding CAN-FD support for newer DJI Enterprise packs.
• Study alternative chemistries (LiFePO₄, solid-state) for safer UAV applications.
DJI Battery Killer is a community tool that communicates with the TI BMS inside DJI drone batteries to clear lockout flags and revive packs that are electrically sound but software-disabled. Successful use requires a CP2112 adapter, correct wiring to SDA/SCL/GND, external wake-up voltage for deeply discharged packs, and execution of Unseal → Clear PF → Reset → Seal commands in the software. Because the process bypasses manufacturer safety interlocks, it can ignite or permanently damage the battery and will void any warranty; it should therefore be attempted only by professionals who understand Li-ion safety protocols and local legal constraints.
