This article guides you through charging your Deeper MAX (and interpreting its LED during charging), installing the Fish Deeper app, pairing the device with your smartphone, and following recommended maintenance practices.
Charging Deeper MAX and LED Indicator
First unscrew the top cover to open the device - please always ensure the device is dry before opening it. Now connect your Deeper Sonar to a USB power source using the cable included.
When you connect Deeper MAX to a power source, the LED indicates charging status. The device automatically powers on when charging - there is no user power button.
LED Signal | Meaning |
1 orange flash | Battery is empty |
2 orange flashes | Battery ~ 25 % charged |
3 orange flashes | Battery ~ 50 % charged |
4 orange flashes | Battery ~ 75 % charged |
Solid green light | Battery fully charged |
Blue light | Charging not possible - temperature is too low (< 3 °C / 37.4 °F). Move the device to room temperature and try again. |
Red light | Charging problem - try a different charger or cable, or allow charging for over 1 hour. If the LED remains red, contact support@deeper.eu. |
How to Download and Install the FishDeeper App
1. Open one of the following links to find Fish Deeper application. App Store (iOS) or Google Play Store (Android).
2. Tap Install or Get.
3. Once installed, open the Fish Deeper app:
- Create an account or log in with your existing Deeper account - account creation in the Fish Deeper app is totally free and required to access all features and save your scans and maps. You can also choose “Continue as Guest”, but please note that this option does not give you access to all features and may limit your overall experience.
- Make sure to grant all requested permissions for proper app and device functionality.
Pairing Deeper MAX with Your Smartphone
1. Make sure your Deeper MAX is powered on - either by placing it in water or by connecting it to a charger. If you are placing it in the water, ensure the “Water” and “Proof” marks are perfectly aligned (see below for an example).
2. Open your smartphone’s Wi‑Fi settings and enable Wi‑Fi.
3. Select “Deeper MAX” from the list of available Wi‑Fi networks. The connection will be established automatically; no password will be requested.
4. If your smartphone warns that “Internet may not be available,” accept or continue. This is expected - the Wi‑Fi connection is for sonar data, not for internet access.
5. On Android devices, disable “Smart Network Switch” (or similar, depends on device model) to prevent switching away from the sonar’s Wi‑Fi. On iOS, turn off Wi‑Fi Assist so automatic switching to cellular does not break the connection.
6. Launch the Fish Deeper app and follow the in‑app instructions to complete the pairing process, making sure to grant all permissions requested by the app.
General Maintenance Tips for Deeper MAX
- Keep the Fish Deeper app up to date via Google Play or App Store. The latest app will prompt firmware updates when your Deeper device is connected and at least ~50 % charged.
- Because your sonar uses a lithium‐polymer battery, charge it regularly even if unused: For most Deeper models, charging every six months is recommended.
- Store the device in a clean, moisture‑free environment at ideal temperature: 16 °C to 22 °C (62 °F to 72 °F). Do not keep it in extreme heat or cold for long periods.
- Always dry the device thoroughly before storage. Do not leave it wet.
- Do not immerse the device in water while it is connected to a charger. Ensure the top cover is firmly closed, with the “Water Proof” marks aligned, before placing it in water.
- Use a soft cloth for cleaning. If the device is heavily soiled, use a mild detergent and water solution. Avoid abrasive pads, scouring powders, or solvents (such as alcohol or benzene). Periodically check the water contacts and clean them if needed.
- Clean the threads of the top cover before attaching; ensure there is no sand or dirt on either thread before closing.
- Protect the device from physical damage: avoid dropping it or knocking it against rocks or hard surfaces. Serious impacts may irreparably damage internal components..