In this article you will learn how to properly charge, store, and maintain your Deeper Quest or Deeper Spark batteries and Remote Controller battery to maximize battery lifespan, maintain safe operation, and protect the device from water damage.
Storing and Charging Batteries
Store Batteries Partially Charged
For the best long-term battery health, store Deeper Quest or Deeper Spark batteries with approximately 50–80% charge when the device will not be used for several months or longer.
Avoid storing batteries:
Fully charged for extended periods
Fully depleted for extended periods
Both conditions can reduce overall battery lifespan and battery capacity over time.
Recharge Batteries Every 6 Months
If your Deeper Quest or Deeper Spark will remain unused for an extended season:
Check the battery level every 6 months.
Recharge the batteries if needed.
Return them to storage at approximately 50–80% charge.
This helps preserve battery performance and prevents deep discharge during storage.
Store in a Cool, Dry Environment
Always store batteries:
In a dry environment
Away from direct sunlight
Away from heaters or hot vehicles
Above 16°C (60.8°F) whenever possible
Avoid:
Freezing temperatures
High humidity
Extreme heat exposure
Charging Safely and Efficiently
Use the Correct Charger and Cable
For Deeper Quest:
Use the supplied USB-C charging cable and power adapter
Recommended charging specification: 65 W
For Deeper Spark:
A USB-C charging cable is included with the device
Wall charger is not included
Use a USB-C Power Delivery charger that supports at least 20 V / 2 A output, which equals 40 W or more. A suitable wall charger, such as a 65 W USB-C Power Delivery charger, can be purchased directly from us.
Make sure to use a USB-C cable that supports Power Delivery charging, as some basic USB-C cables may not communicate the required power level correctly
Using uncertified or incompatible chargers may reduce charging efficiency or damage the battery system.
Charging with a Power Bank
Deeper Quest and Deeper Spark batteries can be charged using:
Power banks
Portable power stations or solar panels
Standard USB charging adapters
For efficient charging during fishing trips or travel, use:
Minimum 20,000 mAh power bank
5V / 2A output
Deeper Quest uses two batteries, while Deeper Spark uses a single internal battery.
Each battery used in Deeper Quest and Deeper SPARK has:
14.4V voltage
6.7Ah capacity
96.48 Wh energy capacity
A larger-capacity power bank or a power station are recommended for completing full charging cycles away from mains power.
Dry the Charging Area Before Charging
Before connecting a charger:
Inspect the charging contacts.
Ensure the charging area is fully dry.
Remove any dirt, moisture, or debris.
Charging wet contacts may lead to corrosion or charging issues.
Do not leave the device charging unattended for extended periods.
It is healthy to recharge the batteries after every fishing session. When the boat is connected to the charger, the internal ventilation system activates automatically, helping remove potential moisture from inside the boat.
You do not need to monitor the exact charging percentage during normal use. Simply leave the boat connected until the batteries reach 100%.
Secure Battery Compartment Caps and Covers After Charging
After charging or reinstalling batteries:
Insert the batteries correctly.
Carefully close the battery compartment caps or covers.
Tighten or secure them properly.
A properly secured compartment cap or cover ensures a watertight seal and protects internal electronics from water ingress.
Failing to fully secure the compartment may result in:
Water damage
Corrosion
Unexpected power loss during operation
Remote Controller Battery Care
The Deeper Quest Remote Controller can be charged:
Directly from the Deeper Quest via USB connection
Using a power bank
Using a standard USB charger
The optional Deeper Spark Remote Controller can be charged using:
A USB-C charger
A power bank
A standard USB charging adapter
Recommended Storage Charge Level
If storing the Remote Controller for longer periods:
Charge the battery to approximately 50–80%.
Store it in a cool, dry environment.
Recharge periodically if unused for several months.
It’s recommended to inspect the magnetic charging port of the Remote Controller for any dirt or contact discoloration. If needed, clean the port with WD-40, electronic contact cleaning solution, or alcohol.