Panasonic Battery CR2477 Lithium 3V (1 Battery Per Pack)

Want real soil sensing from day one?
Choose the Starter Kit for the controller plus wireless soil moisture sensors.

The Panasonic CR2477 is the replacement battery for your SoilDrops wireless soil moisture sensor. Engineered for long life and stable output in outdoor conditions, this 3V lithium coin cell maintains consistent performance across a wide temperature range — so your sensor keeps reading accurately season after season.

Panasonic is one of the most trusted names in lithium battery technology, and the CR2477 is built to the same exacting standards as the cell that comes installed in every SoilDrops sensor.

  • Battery type: CR2477 lithium coin cell
  • Voltage: 3V
  • Quantity: 1 per pack
  • Compatible with: SoilDrops wireless soil moisture sensor
$5.00 USD
$5.00 USD
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30-day money-back guarantee
Free shipping & free returns
1-year limited warranty
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Shipping & Warranty

Free shipping, both ways. Every SoilDrops Controller and Starter Kit ships free across the contiguous U.S. Orders placed before 2pm ET ship the same business day; most customers receive their package within 2–7 business days via USPS or UPS Ground. Tracking is emailed as soon as your label is created.

30-day money-back guarantee. Try SoilDrops risk-free for 30 days. If it's not the right fit, send it back — we'll cover the return label, and refund the full purchase price within 3 business days of receiving the unit. No restocking fees, no questions asked.

1-year limited warranty. Every SoilDrops device is covered against manufacturing defects for one full year from delivery. If something goes wrong, call 888-427-6838 or email support@soildrops.com and we'll repair or replace it on us.

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Here’s the deal

SoilDrops uses cutting edge AI tech to automatically care for your landscaping - that means it handles all the watering, leak-detecting, soil-moisture tracking, and weather monitoring.

  • AI-Powered Precision Watering
  • Easy Installation & Compatibility
  • Wireless Soil Moisture Sensors
  • Smart Leak Detection

It comes with your new best friend

  • Interactive installation guide

    SoilDrops uses cutting edge AI tech to automatically care for your landscaping - that means it handles all the watering, leak-detecting, soil-moisture tracking, and weather monitoring.

  • Real-Time Monitoring & Control

    SoilDrops uses cutting edge AI tech to automatically care for your landscaping - that means it handles all the watering, leak-detecting, soil-moisture tracking, and weather monitoring.

  • Automatic Alerts

    SoilDrops uses cutting edge AI tech to automatically care for your landscaping - that means it handles all the watering, leak-detecting, soil-moisture tracking, and weather monitoring.

Frequently Asked Questions

What is the Soildrops Controller?

A controller-only replacement for your existing irrigation timer. It uses app control, schedules, weather data, and optional SoilDrops soil moisture sensors to water your landscape. For real soil readings from day one, choose the Starter Kit with sensors included.

Is Soildrops compatible with my current irrigation system?

Yes, for the vast majority of installed systems. If your existing controller uses standard 24V AC solenoid valves (which most residential systems do), Soildrops works as a direct replacement. You'll move the existing valve wires onto the numbered terminal block, with the common wire on the "C" terminal.

How much water can I save?

Most households save up to 30% compared to a traditional timer. The biggest savings come when the controller is paired with SoilDrops sensors, because the system can skip watering when the soil is already moist.

How does AI scheduling work?

With sensors paired, SoilDrops can use real-time soil moisture, weather forecasts, plant profiles, and soil type to water only when each zone actually needs it. Without sensors, Smart mode still uses weather and plant data, but it is estimating instead of reading the ground directly.

Can I manually control the system?

Yes. Use Quick Run for on-demand watering of any zone, or switch a zone to Manual mode to set fixed days, times, and durations. The controller is reachable from any device via the app and a web URL.

Why does Soildrops only allow each zone to water once per day?

Because deep, infrequent watering produces healthier plants. Multiple short daily starts keep water in the top inch of soil and encourage shallow roots, weaker drought tolerance, and more turf disease. This recommendation comes from Michigan State Extension, UC IPM, the USGA, and the EPA WaterSense program. If you're seeing runoff, Smart Cycle & Soak fixes it by splitting one watering into soak-friendly pulses.

What are the Wi-Fi requirements?

A standard 2.4 GHz Wi-Fi network (not 5 GHz). Bandwidth requirements are very low — any stable signal works. If your Wi-Fi is weak near the controller, a Wi-Fi extender solves it.

How long does installation take?

About 10–15 minutes. Attach the antenna, choose a sheltered mounting location, mount with the included screws, connect your existing valve wires to the numbered terminals, plug in the power adapter, hold the reset button until the LEDs flash, and scan the QR code in the app.

Do I need soil moisture sensors to use it?

No. The controller works in Smart mode without sensors. But without sensors, it estimates from weather and plant data. To water from measured soil moisture out of the box, choose the Starter Kit.

Does the controller require a subscription?

No — manual control, zone schedules, basic weather-based scheduling, and CultivAI plant care are free for life. Premium hands-off automation features are optional add-ons managed in the App Store or Google Play.

How do I reach customer service?

Our customer service team is available Monday–Friday, 9am–5pm Pacific Time.

📞 Phone: 888-427-6838
✉️ Email: support@soildrops.com

For warranty claims, returns, or product questions, either channel works.

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