The best Meshtastic solar nodes and repeaters

Pick an nRF52 chip for solar. The Meshtastic power docs describe a Power Saving mode meant for low-current sources like solar, and the ESP32 ROUTER role forces power saving on. Makers list nRF52 boards at about 11 to 12 microamps of sleep current (Heltec for the T114, the Meshtastic docs for the T096), while Light Sleep exists only on ESP32. If you want the full build, read the solar node build guide.

A dash means the value is unknown.

Best ready-made: RAK WisMesh Repeater Mini

RAK lists an nRF52840 (RAK4631) node with an integrated solar panel and a 3200 mAh battery in an IP67 enclosure with wall or pole mounting, and an SMA connector so you can add a proper antenna. It has no screen and no GPS. RAK lists it at $99 (RAK official store, Nov 5, 2026), out of stock at the last check.

The catch is the panel is small and built in, so mounting angle and shade matter, and the battery is fixed capacity. RAK also sells a larger WisMesh Repeater based on a different module with an optional external solar input; that is a separate product, not this one.

Best with a bigger panel: Seeed SenseCAP Solar Node P1

The Meshtastic docs list the P1 with an integrated 5 W solar panel, four 18650 cell slots, an SMA (listed as RP-SMA in the docs) antenna connector, a 2 dBi rod antenna and mounting brackets. Seeed's claim, as recorded in the docs, is 8-9 km range in an open area, which is a best-case maker figure, not a promise.

The catch: the P1 ships without batteries, so you must buy four 18650 cells, and no waterproof rating is stated in our sources. A P1 Pro variant adds batteries and a GPS module. Seeed lists the base P1 at $72.9 (Seeed Studio official store, Nov 5, 2026).

Best DIY node: Heltec Mesh Node T096

This is a bare board, not a finished product. It uses an nRF52840 with a 28 dBm power amplifier, dual-band GNSS and a solar input, listed at $33.9 (Heltec official shop, Nov 5, 2026) at the Heltec shop. The Meshtastic docs give about 12 uA sleep current. The package includes an antenna, a battery connector and pin headers, but no battery or case.

The catch is that you build the enclosure, panel and battery yourself, and you must choose the frequency variant at purchase. The docs and the Heltec page disagree about its screen. Heltec's cheaper T114 (about 11 uA deep sleep per Heltec) is a similar nRF52 option at $17.9 (Heltec store, Nov 5, 2026) for the bare board.

Best modular budget: muzi works Base Uno

Muzi sells the Base Uno as a small modular nRF52840 board for repeater projects at $25 (muzi.works, Nov 5, 2026). It weighs 10 g and has no case or battery. Our data does not state an antenna connector or the solar input details, so confirm both on the muzi page before ordering.

Power budget: why the chip matters

The Meshtastic power docs describe Power Saving as a mode that disables Bluetooth, serial, Wi-Fi and the screen, and say it is meant for low-current sources like solar. On ESP32 the ROUTER role switches it on and you cannot turn it off. Light Sleep, which suspends the CPU while the radio stays listening, is ESP32-only and does nothing on nRF52.

In practice that means an ESP32 node can be made to run on a small panel, but you have to accept that Bluetooth stays off most of the time. An nRF52 node avoids that compromise because its idle draw is low to begin with. For sizing maths with real numbers, use the battery calculator and the solar node build guide rather than rules of thumb.

Mounting and enclosure checklist

• Rating. Only the RAK Repeater Mini has a stated rating in our data (IP67). For a bare board, plan a sealed box and cable glands.
• Connector. Choose a node with SMA so the antenna sits outside the box. Boards with IPEX/U.FL need a pigtail through the wall.
• Panel angle and shade. A small integrated panel only works if it faces the sun; mount it on the south side in the northern hemisphere.
• Firmware role. A repeater that nobody can reach by Bluetooth still needs the correct region and channel set before you climb the pole.

Batteries in cold weather

Battery chemistry matters more in winter than the panel. We do not have sourced figures here, so read the datasheet of the specific cell for its allowed charge and discharge temperature range, and do not assume a lithium cell can charge below freezing. Cells with a built-in protection board and a documented charge range are the safer choice.

Role, placement and antenna

Role choices affect uptime. The firmware docs describe ROUTER as for strategic locations that maximise coverage and ROUTER_LATE for dead spots, and note that ROUTER on ESP32 forces power saving. Read roles explained before you mark a node as a router. A better antenna and height help more than a larger panel; see the best antennas.

How we picked

We looked at chip family, whether panel and battery are included, the antenna connector, the stated ingress protection rating, the maker's sleep-current figure and the listed price with its date. We did not test any of these in the field, and no sunlight or winter autonomy figures are claimed. See the methodology.