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Description
Characteristics
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Description
Summary
Note
Verify the battery switch alignment with the solder points and ensure the battery is connected before applying power (activation/charging/setup) to avoid board damage.
MeshSolar is an integrated power management and communication solution designed for outdoor low-power devices, consisting of a BMS Power Management Board and an BLE+LoRa Communication Control Mainboard. The system features solar MPPT charging, multi-protocol fast charging (supporting USB PD3.0 and 18–24V DC input), intelligent battery management (compatible with 1–4 cells/battery packs, with overcharge/over-discharge/short-circuit/over-temperature protection and balanced charging), and dual-mode Bluetooth + LoRa wireless communication (LoRa range up to 10 km with 21±1 dBm transmit power).
With its low-power design, extensive hardware expansion interfaces (supporting displays, GPS, and general-purpose I/O), and seamless compatibility with the HT-n5262M module (nRF52480 + SX1262), MeshSolar is ideal for high-power or long-term stable power supply applications such as solar-powered systems and remote monitoring. It also fully supports the Meshtastic ecosystem.
Main Features
- Supports 1-4 battery configurations.
- Features comprehensive protection including overcharge/over-discharge/short-circuit/over-temperature safeguards.
- Enables balanced charging for optimal battery performance.
- Multi-mode charging options:18~24V Solar MPPT charging,USB PD3.0 fast charging, 18~24V external DC charging.
- Web-based configuration for charging/discharging parameters.
- LED battery level indication.
- One-touch output shutdown function.
- Dual-mode wireless communication: Bluetooth connectivity, LoRa long-range communication (up to 10km range).
- Expansion interfaces for displays, GPS, and general-purpose I/O.
- Excellent low-power performance.
General Specifications
| General Parameters | Description |
|---|---|
| BMS chip | BQ4050, CN3795 |
| Main Control Module | HT-n5262M(nRF52840+SX1262) |
| PCB Storage Condition | -30~80℃，90%RH(No condensing) |
| Input Voltage | 18~24V |
| Battery charging current | ≤1.5A |
| Balancing | 4.2V, 100mA |
| Overcharge Protection | 4.3V |
| Overcurrent Protection | 2A |
| Undervoltage Protection | 2.5V |
| Solar & Pack Interface | XT30 Female |
| Battery Cell Interface | PH2.0-8P |
| NTC Interface | MX1.25-8P |
| MCU Control Board Interface | PCIe M.2 |
| Dimensions | 43*97*11mm |
| MCU Current | 500mA Max |
| Number of Managed Battery Cells | 1~4 cells |
| Battery Type | Lithium-ion, Lithium iron phosphate |
| USB Expansion Interface | USB Type C |
| Expansion Interface | Screen: MX1.25-9P, GNSS: MX1.25-8P |
HT-N5262M Specifications
| Main Controller Parameters | Description |
|---|---|
| MCU | nRF52840 |
| LoRa Chip | SX1262 |
| Memory | 1M ROM; 256KB SRAM |
| Bluetooth | Bluetooth 5, Bluetooth mesh, BLE. |
| Hardware Resource | 3*SPI, 2*I2C, 2*UART, 4*PWM, QPSI, I2S, PDM, QDEC, Etc. |
| Dimensions | 30*20*3.2 mm |
| Operating environment | -40~85℃, 90%(No condensing) |
| Power Supply | 3.3V |
| Interface | 2*IPEX1.0(antenna), M.2 |
Description
Components
High light
Multi-mode charging
18–25V solar MPPT charging
USB PD3.0 fast charging
18–25V external DC charging
Connectivity & Expansion
Dual-mode wireless communication:
– Bluetooth connectivity
– LoRa long-range communication (up to 21±1dBm TX power, 10km range)
M.2 MCU interface
Supports display, GPS, and general I/O expansion
Typical Applications
- Environmental Monitoring Systems.
- Smart Agriculture & Livestock Farming.
- Asset Management and Tracking.
- Outdoor Emergency Solutions.
- Solar Street Lighting Systems.
- Industrial Infrastructure Monitoring.
- Open-source projects like **Meshtastic**.
FAQ
Solar panels with 18~25V output.
Lithium-ion, lithium polymer, lithium iron phosphate.
Different battery types correspond to different hardware versions.
Generally speaking:
Li-ion/LiPo: High energy density, lightweight, nominal voltage 3.7V, full charge 4.2V.
LiFePO₄: Focuses on safety, long lifespan, and stability, nominal voltage 3.2V, full charge 3.6V.
Yes, but only if PD3.0(20V) protocol is detected.
Docs & Resource
- [Tool] BMS Setting Page
- [Attachment] —HT-N5262M Schematic
- [Resource] —Heltec nRF52840 Framework
- [Attachment] —Resource Station
- [Attachment] — Datasheet
Packing list
The default packing list without selecting any accessories is as follows:
| Item | Quantity |
|---|---|
| MeshSloar | x1 |
| NTC Resistor | x1 |
| USB cable | x1 |
| Battery interface 8P-PH2.0 single head cable | x1 |
| XT30 interface cable | x2 |
| 2.4G FPC antenna | x1 |
| LoRa Caterpillar Antenna | x1 |
| MX1.25-8P dual head adapter cable for GPS | x1 |
| MX1.25-9P dual head adapter cable for display screen expansion | x1 |
Characteristics
| Weight | 35 g |
|---|---|
| Dimensions | 96.97 × 42.97 × 12.00 cm |
| LoRa Band | 863~870MHZ, 902~928MHZ |
| Battery Type Supported | Lithium-ion, lithium polymer, Lithium iron phosphate |
| Need PD3.0 (20V) adapter ? | European specifications, US specifications, No |
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MeshSolar, Li-ion BMS, Solar Charging, BLE/ LoRa Connectivity Dev Board
What's this?
MeshSolar integrates a BMS board and an BLE+LoRa communication control mainboard, supporting solar charging while perfect compatibility with Meshtastic.
Warning: Verify the battery switch alignment with solder points and battery connected before applying power (activation/charging/setup) to avoid board damage.
MeshSolar requires a 20V charger for activation. If a 20V charger is not available, a compatible 20V power adapter can be purchased separately.
Price range: $38.99 through $44.90
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