TheColonelYoung/Kratos_packBattery case with electronics for charging and protection of battery cells. Composes of 2s li-ion 3,7V battery cells. Includes undervoltage, overvoltage and overcurrent protection. As well as reverse voltage protection. Is charged from USB type-C connector. Support statistics over USB and have battery voltage indication via LEDs.
Kratos pack is an open-source printed circuit board by TheColonelYoung, from the TheColonelYoung/Kratos_pack repository on GitHub. It is a 4-layer board of 44.2 × 17.2 mm with 121 parts on 97 nets, routed with 1,389 tracks and 176 vias.
It is built around the INA199EVM, KTD2026BEWE-TR and 24LC32A/P, with the 74LVC2G14GW, BQ25887RGE and LDK715M33R among its other parts. Its parts include 43 resistors, 28 capacitors, 12 ICs, 8 connectors and 7 transistors. It belongs with the power boards and the STM32 boards of this library.
Battery case with electronics for charging and protection of battery cells. Composes of 2s li-ion 3,7V battery cells. Includes undervoltage, overvoltage and overcurrent protection. As well as reverse voltage protection. Is charged from USB type-C connector. Support statistics over USB and have battery voltage indication via RGB LED.
| Front | Back |
|---|---|
 |  |
PCB is placed on top of batteries, so contact on bottom of board touch positive side of one battery and negative of other. On other side batteries are connected only with metal bridge with spring contact to which is soldered cable which leads to connector on board. This wire is used to read voltage of individual batteries and balance then during charging.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | TCY_passives:C_0603_1608Metric | C1, C3, C6, C10, C11, C13, C18, C21, C27, C28 |
| 10 | 470k | TCY_passives:R_0603_1608Metric | R19, R31, R33, R34, R37, R38, R39, R40, R43, R44 |
| 6 | 10k | TCY_passives:R_0603_1608Metric | R4, R8, R9, R15, R17, R20 |
| 5 | 1k | TCY_passives:R_0603_1608Metric | R7, R35, R36, R41, R42 |
| 5 | 1uF | TCY_passives:C_0603_1608Metric | C5, C25, C26, C29, C30 |
| 4 | 4.7uF | TCY_passives:C_0603_1608Metric | C4, C8, C22, C24 |
| 3 | 10uF | TCY_passives:C_0805_2012Metric | C7, C12, C16 |
| 3 | 22k | TCY_passives:R_0603_1608Metric | R1, R3, R16 |
| 3 | 39nF | TCY_passives:C_0603_1608Metric | C9, C20, C23 |
| 3 | UT6MA2TCR | TCY_IC:UDFN-6-2EP_2x2mm_P0.65mm_EP1x0.7mm | Q4, Q5, Q6 |
| 2 | 20mR (0.5%) | Resistor_SMD:R_1206_3216Metric | R28, R29 |
| 2 | 3V3 | Diode_SMD:D_SOD-523 | D1, D4 |
| 2 | 4.02k | TCY_passives:R_0603_1608Metric | R10, R26 |
| 2 | 470R | TCY_passives:R_0603_1608Metric | R21, R22 |
| 2 | 5.1k | TCY_passives:R_0603_1608Metric | R5, R6 |
| 2 | 82R | Resistor_SMD:R_1206_3216Metric | R23, R24 |
| 2 | AON7414 | Package_DFN_QFN:DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | Q2, Q3 |
| 2 | MIC94300 | TCY_IC:MLF-4_1.2x1.6mm_P0.5_1EP_0.85x0.5mm | U11, U13 |
| 2 | TestPoint | TCY_connectors:TestPoint_Pad_D0.5mm | TP12, TP14 |
| 1 | 1.74M | TCY_passives:R_0603_1608Metric | R25 |
| 1 | 100k | TCY_passives:R_0603_1608Metric | R18 |
| 1 | 100pF | TCY_passives:C_0603_1608Metric | C19 |
| 1 | 100uF/12V | Capacitor_Tantalum_SMD:CP_EIA-7343-31_Kemet-D | C17 |
| 1 | 105k | TCY_passives:R_0603_1608Metric | R27 |
| 1 | 12V | Diode_SMD:D_0603_1608Metric | D3 |
| 1 | 162k | TCY_passives:R_0603_1608Metric | R30 |
| 1 | 17.8k | TCY_passives:R_0603_1608Metric | R13 |
| 1 | 1uH | Inductor_SMD:L_Taiyo-Yuden_MD-4040 | L1 |
| 1 | 20k | TCY_passives:R_0603_1608Metric | R32 |
| 1 | 24LC32 | Package_DFN_QFN:DFN-8-1EP_3x2mm_P0.5mm_EP1.3x1.5mm | U10 |
| 1 | 3V3 | TCY_connectors:TestPoint_Pad_D0.5mm | TP10 |
| 1 | 4.12k | TCY_passives:R_0603_1608Metric | R12 |
| 1 | 47k | TCY_passives:R_0603_1608Metric | R2 |
| 1 | 47uF/16V | TCY_passives:C_1206_3216Metric | C14 |
| 1 | 50R@100Mhz | Inductor_SMD:L_1206_3216Metric | FB1 |
| 1 | 74LVC2G14 | Package_TO_SOT_SMD:SOT-363_SC-70-6 | U12 |
| 1 | AON7403 | Package_DFN_QFN:DFN-8-1EP_3x3mm_P0.65mm_EP1.55x2.4mm | Q1 |
| 1 | B1_V | TCY_connectors:TestPoint_Pad_D0.5mm | TP5 |
| 1 | BAT_0V | TCY_connectors:18650_contact_bump | J6 |
| 1 | BAT_7.4V | TCY_connectors:18650_contact_bump | J5 |
| 1 | BAT_MID+NTC | TCY_connectors:Amphenol_10114828-11103LF_1x03_P1.25mm_Vertical | J4 |
| 1 | BD48xxFVE | Package_TO_SOT_SMD:VSOF5 | U6 |
| 1 | BOOT | TCY_buttons_switches:KMT031NGJLHS | SW2 |
| 1 | BQ25887 | Package_DFN_QFN:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U5 |
| 1 | CP2102N-Axx-xQFN20 | Package_DFN_QFN:SiliconLabs_QFN-20-1EP_3x3mm_P0.5mm_EP1.8x1.8mm | U2 |
| 1 | DBG_UART | TCY_connectors:Amphenol_10114828-11103LF_1x03_P1.25mm_Vertical | J3 |
| 1 | DMN2300UFD-7 | TCY_IC:DFN-3_1.2x1.2mm | Q7 |
| 1 | DNP | TCY_passives:R_0603_1608Metric | R14 |
| 1 | INA199 | Package_DFN_QFN:UQFN-10_1.4x1.8mm_P0.4mm | U7 |
| 1 | KTD2026BEWE | TCY_IC:UTDFN-8-1EP_1.5x1.5mm_P0.4mm_EP0.8x1.45mm | U4 |
| 1 | LDK715M33R | Package_TO_SOT_SMD:SOT-23-5 | U9 |
| 1 | LED_RGBA | TCY_smd_leds:WL-SFCD - RGB606 | D2 |
| 1 | LTC4231 | Package_DFN_QFN:QFN-12-1EP_3x3mm_P0.5mm_EP1.65x1.65mm_ThermalVias | U8 |
| 1 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | H1 |
| 1 | OUT | TCY_connectors:TestPoint_Pad_D0.5mm | TP9 |
| 1 | OUT+ | TCY_connectors:WirePad_SMD_1x_3x6mm | J7 |
| 1 | OUT- | TCY_connectors:WirePad_SMD_1x_3x6mm | J8 |
| 1 | PROG_CONN | TCY_connectors:Amphenol_10114828-11103LF_1x03_P1.25mm_Vertical | J2 |
| 1 | PWR_SEL | TCY_connectors:SolderJumper-3_P0.75mm_Open_Pad0.5x0.8mm | JP1 |
| 1 | RST_BTN | TCY_buttons_switches:KMT031NGJLHS | SW3 |
| 1 | SENSE | TCY_connectors:TestPoint_Pad_D0.5mm | TP7 |
| 1 | SP0503BAHT | Package_TO_SOT_SMD:SOT-143 | D5 |
| 1 | STM32G071Gx | TCY_IC:QFP-28_4x4_Pitch0.5mm | U3 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J1 |
| 1 | USB_DET | TCY_connectors:TestPoint_Pad_D0.5mm | TP1 |
| 1 | UVLO | TCY_connectors:TestPoint_Pad_D0.5mm | TP8 |
| 1 | VBAT | TCY_connectors:TestPoint_Pad_D0.5mm | TP3 |
| 1 | VBUS | TCY_connectors:TestPoint_Pad_D0.5mm | TP2 |
| 1 | VCC | TCY_connectors:TestPoint_Pad_D0.5mm | TP6 |
| 1 | WAKEUP | TCY_buttons_switches:EVQ-P7J01P | SW1 |
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It measures 44.2 × 17.2 mm and has 4 copper layers, 1.6 mm thick.
121 parts, built around the INA199EVM, KTD2026BEWE-TR, 24LC32A/P and 74LVC2G14GW. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the TheColonelYoung/Kratos_pack repository on GitHub, at the commit this page was made from: the board is pcb/kratos_pack.kicad_pcb and its schematic pcb/BTN_Denoise.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask TheColonelYoung before reusing the design.