Connector & voltage compatibility
Before you plug any panel into a power station, check three things: voltage, current and watts, and the connector. Get the voltage wrong and you can damage the station; get the connector wrong and it simply won’t plug in.
1. Voltage: the check that matters most
Every station lists an allowed solar-input voltage range. A panel’s open-circuit voltage (Voc) is its highest voltage, reached with no load and in cold, bright conditions. Voc should stay inside the station’s range, with some margin. The “max-power voltage” (Vmp or Vmpp) is lower than Voc and is where the panel normally works.
- Goal Zero’s Nomad 200 lists Voc 23.0V / Vmpp 19.1V; the Ranger 300 lists Voc 23.0V / Vmpp 19.3V; the Boulder 100 Briefcase lists Voc 21.5V / Vmpp 17.2V.
- GEYOTO’s S100 and S200 list a max-power voltage of 25.2V; GEYOTO doesn’t state Voc on those pages, so check the manual or label before wiring panels in series.
- Station examples: the Goal Zero Yeti 1500’s HPP input takes 12.3–60V (up to 20A) and its 8mm input 13.2–30V; VTOMAN says the FlashSpeed 1000’s Anderson input needs panels between 10V and 50V.
2. Series vs parallel
Series (positive to negative) adds voltages: two panels with 23V Voc make about 46V. Parallel adds current and keeps voltage the same. Series is how people hit high-voltage inputs; it’s also how they exceed a station’s voltage limit. Add up Voc before you connect, and use the brand’s approved cables or adapters.
3. Current and watts
A station limits solar watts and amps. A bigger panel won’t harm a station that’s within its voltage range. The station simply takes what it can. It just won’t charge faster than its limit.
4. Connectors
- MC4: the standard weatherproof solar connector. GEYOTO S100/S200, the VTOMAN panels and most third-party panels use it.
- XT60: a common station input. GEYOTO includes a 3 m MC4-to-XT60 cable with the S100 and S200.
- Anderson (APP): a larger DC connector used by VTOMAN’s FlashSpeed inputs. VTOMAN’s 110W panel ships with an MC4-to-Anderson/XT60/DC5521 adapter.
- 8mm and HPP (Goal Zero): Goal Zero panels and Yetis use 8mm and HPP connectors; the Yeti 1500 has both inputs.
- USB: small panels like GEYOTO’s S35 and S45 output USB to charge phones directly. GEYOTO says they aren’t meant for standard power-station solar inputs.
5. A quick checklist
- Find your station’s solar-input voltage range, max amps and max watts in its manual.
- Check the panel’s Voc (and the combined Voc if wiring in series) is inside that range with margin.
- Match the connector, using the brand’s cable or a polarity-correct adapter.
- Expect real output below the rated watts; size with our solar watts guide.
General guidance, not professional electrical advice. Always follow your power station’s and panel’s manuals. Specs quoted here come from the brands’ official product pages, checked Oct 16, 2026.