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RAK 1W Solar Build

A larger 12 V solar build built around a 1 W radio board, 15 W panel, dedicated solar manager, three 18650 cells and a 5 dBi outdoor antenna.

Radio1 W boardSolar15 W / 12 VBattery3 × 18650LevelAdvanced
Affiliate disclosure

Some links in this guide are affiliate or referral links. No Bars Club may earn a commission from qualifying purchases at no additional cost to you. Read the full disclosure.

Parts list

PartLink
1 W board
See original Notion bookmark; verify current board/source before ordering
View part ↗
Newpowa 15 W 12 V solar panel
Primary solar panel
View part ↗
Solar panel mount
Panel mounting hardware
View part ↗
Waterproof box
Outdoor enclosure
View part ↗
Solar manager with 3 × 18650
Dedicated solar/power manager
View part ↗
EVE 33V 18650 3200 mAh 10 A battery
Use three matched cells per the original design
View part ↗
ALFA Network AOA-915-5ACM 5 dBi
Outdoor 915 MHz antenna
View part ↗
U.FL/IPEX to N-type female
RF bulkhead pigtail
View part ↗
Optional antenna cable
Optional RF extension
View part ↗

Build process

  1. Validate the power architecture

    Before wiring anything, confirm the exact input/output requirements of the 1 W radio board and solar manager. A 12 V panel must not be connected directly to low-voltage radio inputs.

  2. Build the battery pack safely

    Use matched, authentic 18650 cells and the battery arrangement intended by the solar manager. Do not improvise series/parallel wiring.

  3. Bench-test power conversion

    Measure the solar-manager output with a multimeter before connecting the radio. Confirm voltage, polarity and current capability under load.

  4. Install RF hardware

    Mount the N-female bulkhead and attach the ALFA antenna through the shortest practical low-loss RF path.

  5. Enclose and weatherproof

    Secure the radio, solar manager and cells against movement. Protect wiring from abrasion and seal every external penetration.

  6. Deploy in stages

    Test on external/bench power, then battery, then solar. Monitor temperature and battery behavior before an unattended outdoor installation.

Build notes

  • This is an advanced build because it combines higher RF output with a multi-cell solar power system.
  • Use a proper battery management/protection system and follow the solar manager manufacturer wiring diagram.
  • The 1 W board link in the Notion note is a bookmark rather than a normal external URL, so the guide intentionally does not invent a purchase link.
Original build notes

This guide was adapted from No Bars Club's working build notes. Product availability, pricing and firmware can change, so verify compatibility before ordering or powering hardware.

Open Notion source ↗