Features
Everything your solar system needs. Nothing it doesn't.
Helikeep gives you professional-grade solar monitoring and battery protection at a fraction of the cost of high-end systems.
Automatic Battery Protection
The feature that makes Helikeep different from every other budget solar monitor.
Your charge controller can't tell you when your battery is about to die. It doesn't know that your fridge and router are draining the last 10% at 3 AM. By morning, the damage is done.
Helikeep monitors your battery voltage and acts before it's too late.
Battery drops below 12.1V
Helikeep disconnects the load automatically. Your fridge stops, but your battery survives.
Sun comes up, battery recovers above 12.4V
Helikeep reconnects the load. Everything is back to normal.
No internet required
This happens on the device itself — no cloud, no subscription. It just works.
Configurable thresholds
Adjust per battery type (Calcium, AGM, LiFePO4, Gel) through the web interface.
Battery Overnight Estimate
The single most useful number on your dashboard:
"Your battery will last until 6:42 AM"
Calculated in real-time
Based on current battery voltage, load power draw, and sunset time. Updated every 14 minutes.
Know before it happens
If the estimate shows your battery won't make it through the night, you know to turn off non-essential loads — or let Helikeep handle it automatically.
Available on Free and PRO
No subscription needed for the most useful number on your dashboard.
Real-Time Solar Monitoring
See everything your solar system is doing from your phone, tablet, or computer.
Voltage (V), Current (A), Power output (W)
Voltage, charging current, temperature, SOC, charging mode
Voltage (V), Current (A), Power consumption (W), ON/OFF status
Controller temp, device temp, energy generated/consumed today
Historical Charts and Trends
See how your system performs over time. Spot patterns, track seasonal changes, and diagnose problems.
Charts include: battery voltage over time, solar generation curves, load consumption patterns, temperature trends.
FREE: 30 days
Full-resolution sensor data for the last 30 days.
PRO: 1 year
Hourly averages after 30 days. Export to CSV for your own analysis.
Smart Alerts
Don't check the dashboard obsessively. Let Helikeep tell you when something needs attention.
Battery Low
Approaching load shedding threshold. Dashboard (Free) + email + webhook (PRO).
Load Shedding Activated
Battery protection kicked in. Your loads have been disconnected.
Load Restored
Battery recovered. Power restored automatically.
Device Offline
No data for 20+ minutes. Something may need attention.
Thermal Protection
Device overheating. Entered deep sleep to cool down.
Webhook Integration
Connect to Telegram, Slack, Home Assistant, IFTTT, or any other service.
Local Web Interface
Helikeep runs a web server on your local network. Open any browser and access your dashboard — no internet required.
This means your monitoring works even during internet outages. The cloud dashboard is a bonus, not a requirement.
All sensor readings in real time
Battery protection status
Load control (turn on/off manually)
Device settings (WiFi, battery type, thresholds)
Cloud Dashboard
For users who want remote access, historical data, and alerts.
All sensor metrics, real-time updates, 30-day history, battery overnight estimate, 1 automation rule, dashboard alerts.
1-year history, unlimited automations, all alert types via email and webhook, solar forecast, CSV export, multi-device, fleet management, public status page.
Multi-Controller Support
Helikeep works with the most popular budget MPPT charge controllers.
Fully supported
Coming soon
Planned
Planned
Built for Off-Grid
Helikeep is designed for the harsh reality of off-grid installations.
IP66-Rated Enclosure
Waterproof, dustproof. Designed for outdoor installation.
Deep Sleep Power Management
Draws negligible power between readings.
Works Without Internet
Battery protection and local monitoring are fully offline.
Temperature Extremes
Tested from 0 to 40 degrees C ambient.
Automatic Thermal Protection
If the device overheats (>80C), it enters deep sleep to cool down.
Automatic OTA Updates
Firmware updates delivered over-the-air. No USB cables needed.
Ready to protect your battery?
Stop worrying about your off-grid battery. Helikeep handles it.