How to Use a SolarHome Wall Charger for Off-Grid Power
By BioLite | Published: 2026-10-18
Category: How-to Guides
Learn how to quickly charge your SolarHome 620+ or 625 using the wall charger adapter for reliable backup power during overcast days or outages.
Quick answer
Plug the SolarHome Wall Charger into your Control Box's solar input port and connect it to a standard wall outlet to charge the onboard battery in 2–2.5 hours—ideal for overcast days or pre-charging before a power outage.
Why use wall charging for off-grid power
SolarHome lighting kits are designed for solar charging, but weather and location can limit sun exposure. The SolarHome Wall Charger gives you a reliable on-grid supplement, letting you charge the battery fully in 2–2.5 hours using a standard wall outlet. This is especially useful for cabins that see cloudy weeks, RVs parked under shade, or as a quick top-up before a storm knocks out grid power.
The trade-off is that you need access to grid electricity, so it's not a pure off-grid solution. But it ensures you always have a backup charging method when solar isn't enough.
How to use the SolarHome Wall Charger
- 1. Locate the solar input port on your Control Box: Find the port labeled 'Solar Input' on your SolarHome 620+ or 625 Control Box. It's usually on the side or bottom panel. The Wall Charger's plug fits only this port, so don't force it into any other opening. Check that the port is clean and free of debris before inserting the plug.
- 2. Connect the Wall Charger to the Control Box: Insert the Wall Charger's barrel connector into the solar input port until it clicks or feels snug. Do not twist or wiggle excessively—this can damage the pins. The connection should be firm but not tight. A loose connection may interrupt charging; reseat the plug if the charger doesn't power on.
- 3. Plug the charger into a wall outlet: Use a standard 100-240 VAC wall outlet (50-60 Hz). The Wall Charger's LED indicator will light up to show it's receiving power. If the LED doesn't turn on, try a different outlet or check the charger's cable for damage. Avoid extension cords if possible—they can reduce charging efficiency. If you must use one, keep it short and heavy-duty.
- 4. Monitor charging time: The SolarHome 620+ reaches full charge in about 2 hours; the SolarHome 625 takes about 2.5 hours. The Control Box's battery indicator will show progress. Unplug once fully charged—overcharging is not harmful, but it's unnecessary. Set a timer to avoid forgetting. The charger draws 0.6A, so it's safe to leave plugged in, but unplugging saves energy.
- 5. Disconnect and store safely: First unplug the Wall Charger from the wall outlet, then disconnect it from the Control Box. Store the charger in a dry place away from moisture and extreme temperatures. Avoid coiling the cable tightly to prevent wire fatigue. Keep the charger accessible for quick use during power outages or cloudy stretches.
Product facts
- SolarHome Wall Charger: Designed for SolarHome 620+ and 625, this adapter plugs into the solar input port and charges the 620+ in 2 hours, 625 in 2.5 hours. Input: 100-240 VAC, 50-60 Hz, 0.6A. You can fully recharge your SolarHome system in a predictable time frame, even when solar panels aren't effective, making it a dependable backup for off-grid setups.
SolarHome Wall Charger
