The operation of the vessel is impossible without reliable power supply and navigation, therefore, sonar-box It's becoming a critical piece of equipment, and many newcomers underestimate the importance of high-quality electronics protection, placing expensive devices just at the bottom or in makeshift niches, a major mistake that could cause the entire power supply and navigation system to fail at the most inopportune moment.
A high-quality sealant has several functions: it protects the terminals from water, prevents short circuits when rolled, and hides the wires from prying eyes. battery-box Minimizes vibrations that are harmful to lead-acid and AGM batteries, and in this article we will discuss all the nuances of choosing, installing and operating protective containers for water technology.
The choice between a ready-made solution and self-manufacturing often depends on the type of boat and the owner's budget. However, saving on protecting electrical equipment rarely pays off in the long run. Moisture, salt mist and constant shaking are the main enemies of any electronics on the water.
Criteria for choosing a sealed box for a boat
When looking for a suitable container, the material of manufacture is paramount. ABS Or polypropylene, which is resistant to corrosion and ultraviolet light. Cheap secondary counterparts can crack in the cold or deform in direct sunlight, so you can't save on labeling the material.
Protection rating indicated by the marking IPmust be no lower than IP65And ideally, IP67 or IP68The numbers indicate the device's ability to withstand full immersion and exposure to powerful jets of water under pressure. Resistance to corrosive environments is also critical for marine conditions, as salt water quickly corrodes poor-quality seals.
- 🔒 Having a reliable lock or cap fixing system will prevent spontaneous opening on the wave.
- 📏 The internal dimensions should take into account not only the size of the battery, but also the thickness of the walls, and possible cable conclusions.
- 🛡️ Reinforced stiffness ribs on the body increase mechanical strength when hitting the side or paiola.
⚠️ Attention: Never use top-sealed boxes to store the battery in the hold without additional sealing, as with strong rolling, the electrolyte can leak out through the ventilation holes.
It's important to pay attention to the design of the sealing gum, which is made of silicone or EPDM rubber, which doesn't tan at low temperatures, and cheap porous materials quickly lose elasticity and start to leak moisture after the first season of active use.
Design features and types of boxes
The modern market offers different configurations of containers adapted for specific tasks. Universal boxes They often have removable partitions that allow you to place the battery, sonar and spare wires at the same time. Specialized models can already be equipped with built-in voltmeters or USB ports for charging gadgets.
We need to pay special attention to the cable models. sealer Cable glands greatly simplifies installation and keeps the system tight. If you plan to lay the cables yourself, make sure that the walls of the box allow drilling without the risk of cracking, or use special rubber cuffs.
The dimensions of the container depend on the type of battery used. Standard automotive batteries require large volumes, while lithium batteries take up much less space. The correct size selection will eliminate the boltanka of the battery inside the case, which is a common cause of damage to terminals.
Some manufacturers offer boxes with transparent lids or viewing windows, which are convenient for visually monitoring the level of charge or the state of the indicators without having to open the lid, but it is worth considering that transparent plastic can become cloudy over time under the influence of the sun.
Table of comparison of popular box models
To make the choice easier, we have developed a comparative table of specifications of different types of containers, which will help determine which containers are the most suitable for the containers. sealer It's good for your package.
| Model/Type | Materials | Protection | Max. ABB dimensions (mm) | Features |
|---|---|---|---|---|
| PVC standard | Polypropylene | IP54 | 350x175x190 | Budget option, basic protection |
| Marine Pro | ABS plastic | IP67 | 340x170x220 | Reinforced latches, cable channels |
| Lithium Safe | aluminum | IP68 | 300x150x200 | For LiFePO4, built-in BMS monitoring |
| Universal Box | HDPE plastic | IP65 | 400x200x250 | Roomy, for the battery + sonar |
When analyzing the table, you should consider not only the price, but also the declared resource of the seals. Cheap models often require replacing gums after a year of active fishing.
Instructions for installation and installation of equipment
Good installation is a guarantee of long service equipment, before starting work, you must carefully clean the installation site of dirt and dirt. fixing-piece.
The installation process starts with fitting, place the box in the intended location, check the availability of the lid and the ease of connecting the wires, make sure that the cables do not bend at a sharp angle, which is especially important for thick power wires.
☑️ Checklist before drilling holes
The attachment of the box to the floor of the boat is better done through rubber mounts or vibroprosulators, which will reduce the impact load from the hull of the boat on the inside of the box. Use stainless fasteners or galvanized anticoric to fix.
⚠️ Attention: It is strictly forbidden to fasten the box directly to the transom without damping pads, since vibration from the motor will quickly destroy the internal structure of the battery.
Once the hull is fixed, proceed to laying the cables, all holes in the boat floor should be carefully sealed with a special marine sealant, and the wires inside the box should be fixed with clamps so that they do not dangle when moving.
Organization of space inside the container
The interior of the box requires proper organization, the battery must sit tight, so additional latchers or belts are often used, and the free space can be filled with silica gel bags to absorb moisture, which is especially important for lead batteries.
If the same box is placed in the same box and sounderIt's a good idea to separate them with a partition, which will prevent the battery from heating the electronics and protect the screen from possible electrolyte splashes when the lid is opened, and the wires should be laid carefully, avoiding tension.
Secrets of wire stowage
Use corrugated sleeves to protect the wires from rubbing. Lay the cables along the walls, leaving the center free to access the terminals. Keep the wires out of contact with the sharp edges of the metal mounts.
For ease of service, it is recommended to use quick-separation contacts, such as: AndersonThis will allow you to disconnect the battery from the system in one motion, without unscrewing the nuts every time, which makes it much easier to store the boat in the winter.
Maintenance and protection against corrosion
Regular maintenance extends the life of the equipment, and after each outing, especially in salty environments, the outside of the drawer and terminal must be rinsed with fresh water, which will wash away the salt plaque that is a catalyst for corrosion.
Once a season, check the condition of the sealing gum, it should be cleaned of sand and dirt, and lubricated with a special silicone lubricant to maintain elasticity, the dried rubber cracks and ceases to perform its function.
- 🔋 Check the battery level periodically, even if the boat is in storage.
- 🧼 Use mild detergents, avoiding aggressive chemicals that corrode plastic.
- 🔍 Examine the places of cable entry for the appearance of microcracks in the sealant.
Pay special attention to the terminals. Even in a sealed box, condensate can form. Coating the terminals with technical vaseline or special protective lubricant will create an additional barrier to oxidation.
Frequent errors in operation
One of the most common mistakes is ventilation ignition. Although the box is sealed, some types of batteries (especially liquid) can emit gases during charging. If the pressure relief valves in the battery itself are outdoors in a sealed volume, this creates a risk of bloating or cotton.
Also, users often forget about the temperature regime. Lithium batteries are afraid of charge in the cold, so in winter they are better to remove from the boat. Lead batteries are more tolerant, but the extreme frost reduces their capacity and can cause the electrolyte to freeze in a discharged state.
To extend the life of the battery in the winter, store it at room temperature and recharge once a month, even if it is not in use.
The wrong puff of the terminals is another problem: too weak will delay sparking and heating, and too much can break the lead conclusions. Use a dynamometer key or follow the recommendations of the battery manufacturer.
A sealed box is not only a water protection system, but also a safety system that prevents fires and short circuits on board.
FAQ: Frequently asked questions
Can the box be sealed if the battery requires ventilation?
A box with a conventional lead battery cannot be sealed completely if it emits gases, but modern AGM and GEL batteries are sealed and do not require ventilation, so you can use fully enclosed boxes with IP67-IP68 protection.
What size of box to choose for two batteries?
Two standard batteries (e.g. 60 Ah) will require a box of at least 60-70 liters. It is important to consider not only the dimensions of the batteries themselves, but also the space for wires, fuses and possible placement of the sonar.
Do I need to lubricate the contacts inside the box?
Yes, it is needed. Even in a sealed space, condensation can form due to temperature changes, and lubricating contacts with technical Vaseline or a spray like Liqui Moly Kriech-Öl will prevent oxidation and loss of contact.
Will the plastic box withstand impacts from ice or heavy objects?
Specialized sea boxes made of ABS plastic are highly impact-resistant, but from direct impacts with a heavy metal tool or sharp ice, they are better protected. For maximum protection, you can use models with a metal frame or additional skinning.