LILYGO T-Beam Supreme
The LILYGO T-Beam Supreme is the flagship Meshtastic device, integrating an ESP32-S3, SX1262 LoRa radio, L76K GPS module, OLED display, 18650 battery holder, and solar charging input into a single board. It is the recommended device for mobile Meshtastic nodes that need GPS location sharing, long battery life, and maximum LoRa range.
Best all-in-one Meshtastic device for mobile and outdoor use, skip if you just need a simple stationary node.
Where to Buy
Pros
- Complete Meshtastic solution: LoRa + GPS + display + battery + solar in one board
- 18650 battery holder for easily swappable, high-capacity batteries
- Solar panel input for permanent outdoor deployments
- 8MB PSRAM enables advanced Meshtastic features and logging
- SX1262 LoRa with up to 15km line-of-sight range
Cons
- 100mm length is significantly larger than the Heltec V3 (50mm)
- More expensive than simpler Meshtastic boards
- 12 GPIO pins available — most are consumed by onboard peripherals
The All-in-One Meshtastic Package
The T-Beam Supreme is the board Meshtastic recommends for mobile nodes. Every component a field-deployable mesh node needs is integrated: the SX1262 LoRa radio handles 868/915MHz mesh communication at up to 15km. The L76K GPS module provides positioning for location sharing. The 18650 battery holder accepts standard high-capacity cells. The solar input charges the battery from a panel.
For comparison, building the same capability from a Heltec V3 requires adding an external GPS module ($10), a battery management board ($5), and a solar charger ($8) — more cost, more wiring, more failure points. The T-Beam integrates all of this on one PCB.
Range and Power
The SX1262 LoRa radio achieves up to 15km line-of-sight — slightly better than the Heltec V3's 10km due to better antenna design and ground plane. In practice, both achieve similar real-world ranges of 2-8km depending on terrain. The T-Beam's advantage is in extended deployments: the 18650 battery (typically 2600-3500mAh) runs the board for 2-5 days with GPS active, or weeks in low-power relay mode.
Solar charging via the dedicated input handles panels up to 6V. A small 1W panel keeps the battery topped up in most conditions, enabling truly permanent outdoor installations.
Full Specifications
Processor
| Specification | Value |
|---|---|
| Architecture | Xtensa LX7 |
| CPU Cores | 2 |
| Clock Speed | 240 MHz |
Memory
| Specification | Value |
|---|---|
| Flash | 8 MB |
| SRAM | 512 KB |
| PSRAM | 8 MB |
Connectivity
| Specification | Value |
|---|---|
| WiFi | 802.11 b/g/n |
| Bluetooth | 5.0 |
| lora | SX1262 (868/915MHz) |
| lora_range | Up to 15km line-of-sight |
| meshtastic | Fully supported (recommended device) |
I/O & Interfaces
| Specification | Value |
|---|---|
| gps | L76K GNSS (GPS/GLONASS/BeiDou) |
| Display | 1.3" OLED (128x64) |
| GPIO Pins | 12 |
| SPI | 1 |
| I2C | 1 |
| USB | USB-C |
| SD Card | MicroSD slot |
Power
| Specification | Value |
|---|---|
| Input Voltage | 5 V |
| Battery Charging | 18650 battery holder + USB-C charging |
| solar_charging | Solar panel input |
| Deep Sleep Current | ~10 uA |
Physical
| Specification | Value |
|---|---|
| Dimensions | 100 x 32 mm |
| Form Factor | Long bar (with 18650 battery holder) |
Who Should Buy This
GPS shares your location with the mesh network. 18650 battery lasts days. Solar panel keeps it charged on your pack. LoRa reaches other hikers kilometers away. No cell service needed.
Solar charging + 18650 battery for permanent outdoor deployment. GPS provides precise location. LoRa transmits weather data to a base station kilometers away. MicroSD logs data locally.
The Heltec WiFi LoRa 32 V3 costs half as much and handles stationary relay/repeater duty perfectly. You don't need GPS, 18650, or solar for a plugged-in indoor node.
Better alternative: Heltec WiFi LoRa 32 V3
Frequently Asked Questions
T-Beam Supreme vs Heltec V3 for Meshtastic?
The T-Beam Supreme is the premium option: GPS, 18650 battery, solar, more range. The Heltec V3 is the budget option: smaller, cheaper, no GPS, uses LiPo packs. Choose the T-Beam for mobile/outdoor nodes; choose the Heltec for stationary/indoor nodes.
What 18650 battery should I use?
Any standard 18650 lithium-ion cell works. Recommended: Samsung 30Q (3000mAh), LG MJ1 (3500mAh), or Panasonic NCR18650B (3400mAh). Avoid cheap no-name cells — they may not deliver rated capacity and can be unsafe.
How long does the battery last?
With GPS active and regular mesh communication: 2-3 days on a 3000mAh cell. In low-power router/relay mode with GPS off: 1-2 weeks. With solar panel: indefinitely in most conditions.
Can I use Meshtastic without a phone?
Yes, but the phone app is the primary interface. Without a phone, the T-Beam's OLED shows received messages and status. You can also configure it via WiFi web interface. The device relays messages whether or not a phone is connected.
Is Meshtastic legal?
Yes, in most countries. LoRa operates on ISM bands (868MHz EU, 915MHz US, 923MHz Asia) that don't require a license. Meshtastic uses low power levels within regulatory limits. Check your country's ISM band regulations for specific rules.