Operation of the inflatable board imposes its strict restrictions on the layout of the craft. Battery box. It becomes not just a comfortable shelf, but a vital safety element that separates you from potential acid and sparks. Unlike boats with a rigid hull, where the battery can be secured in a niche, in a PVC boat, any part comes into contact with an inflatable balloon, which is easily damaged by a sharp angle or friction.
Many novice water-engines make the mistake of leaving the battery just on the floor or strapping it to the bank. gel-batteryThe box, when properly selected, can do three things: fix heavy loads, isolate electronics from spray, and prevent gases from flowing inside the cockpit.
In this article, we will discuss why you can not save on this element, what materials are best suited for an aggressive aquatic environment and how to organize the space so that fishing does not turn into a fight against wires. Only a specialized sealed box with ventilation is able to provide complete safety when charging and discharging lead-acid batteries.
Why you need a sealed box for battery on an inflatable boat
The main reason for using the protective housing is the chemical composition of the electrolyte. Standard traction batteries, even in serviced versions, when charging or shaking strongly, can emit sulfuric acid vapor and hydrogen. In the enclosed space of the cockpit, this poses a risk of burns to the fisherman and corrosion of metal parts of the outboard motor.
Besides, battery-box It's a physical defense, and the boat is constantly shaking on the water, and a heavy battery weighing 15 to 25 kg becomes a dangerous projectile, and if it falls to a thin bottom or a tank, it can cause a puncture, which can cause rapid immersion at the depth.
⚠️ Warning: Never place an open battery in the bow of a boat without additional protection. When hit by a wave, the nose often picks up, and an unattached battery can penetrate the cylinder or fly overboard with some equipment.
There's also an aesthetic and order aspect, and tangled wires, oxidized terminals and battery dirt spoil the fishing experience, and quality boxing hides all communications, leaving only the necessary connectors available. electric motor Or sonar.
Criteria for selection: plastic, metal or composite
The market offers many solutions, but not all of them are suitable for inflatable watercraft: weight and resistance to corrosion are the main criteria. Metal boxes that are painted with powder paint rust with salt water over time, and their angles can rub the balloon.
When choosing, pay attention to the presence of a seal along the perimeter of the cover. IP65 And then you can submerge the box in water for a short time without harming the electronics inside, and cheap plastic containers without a sealer just collect the water inside, creating an electrolytic pair with terminals.
The internal space is an important parameter. The box should not be adjacent, but with a margin of 2-3 cm on all sides, this gap is necessary for air circulation and the installation of additional accessories such as voltmeters or fuses.
- 🔋 Material: Preferably impact-resistant plastic with UV stabilizer, not afraid of gasoline and oil.
- 💧 Leakproofness: availability of high-quality rubber seal and reliable latch-klammers.
- 🌬️ Ventilation: vents with spray protection are required for the removal of hydrogen.
- ⚓ Fixing: presence of eyelets or holes for fixing the box to the floor of the boat.
The myth of complete tightness
Many people think that the box should be completely sealed, like an underwater case for a camera. This is a dangerous misconception. Lead acid batteries release gas when charging. If the box is completely sealed, excess pressure will be created inside, which can lead to lid bloating or even cotton. Ventilation holes are a necessary element of the design, they must be located so that water does not flow in when pitching, but gases freely escape.
Design features and internal structure
Good. battery-box It's designed to be very small, and often you have stiff ribs or pawns inside that keep the battery from hanging around, and if your battery is smaller than the size of the box, you need to fill the voids with soft, non-conductive materials, like a piece of foam or struts.
Special attention should be paid to the output of wires: in quality models, special cable channels or rubber ossicles are provided at the output, this prevents rubbing of the insulation against the edge of the plastic and eliminates the risk of short circuits, wires should come out from the bottom or side, but not clamped with the lid.
For ease of use, many models have built-in voltmeters on the front panel, which allows you to control the charge without opening the lid or connecting external testers, and also a useful addition are built-in USB ports for charging gadgets, working directly from the onboard network.
| Parameter | Budgetary option | Professional boxing | A homemade solution |
|---|---|---|---|
| Materials | Thin polypropylene | reinforced ABS plastic | Plywood/LDSP |
| IP protection | IP44 (spray) | IP65-IP67 (submersion) | Missing. |
| Ventilation | Missing. | Valve system | Drill holes |
| Term of service | 2-3 seasons | 10+ years | Season 1 (rotting) |
It's worth noting that professional models often have a removable bottom or are easily disassembled for cleaning. Mud, sand and salt deposits will eventually destroy even the durable plastic if not removed with fresh water after each exit.
☑️ Checking the box's readiness for installation
Rules for safe installation of PVC boat
Installation battery-box A heavy battery cannot be put in the nose, otherwise the boat will lose its driving performance and will peck at the wave, the optimal place is under the front seat (the can) or in the center of the cockpit, closer to the transom, but with a distance from the engine.
The mounting of the box itself is critical, because it doesn't have to just stand on the floor, use regular liner rings or install additional rim bolts that the box is strapped to, and that will prevent it from being displaced by abrupt maneuver or bypassing obstacles.
⚠️ Attention: When installing the box, make sure it doesn't touch the sharp corners of the inflatable tubes. When friction is on the wave, plastic can wipe the balloon in a matter of hours. Use soft linings made of EVA mat or porous rubber under the bottom of the box.
The wiring should be laid so that it is not stepped on the feet and not rubbed with tackles, cables should be put along the side, securing them with clips, or removed under floorboard (floor). The length of the wires should be calculated with a margin, but without the formation of loops in which the fishing hook can catch.
Use copper tips and shrinkage for all the connections inside the box. Vibration on the water quickly shakes simple twists, leading to sparking and heating of the contacts.
Service and extension
The water environment is aggressive, and even the best. battery-box After every fishing trip, especially on salt water, you have to rinse the outer walls with fresh water, and the salt, when it dries, crystallizes and can damage seals or latches.
Periodically check the terminals inside the box, even in a closed space, condensate can accumulate, lubricate the contacts with a special silicone lubricant to protect against oxidation, which will provide a stable current to the electric motor and eliminate power loss.
If you use a boat in winter, it's better to take the battery out and keep it warm, and leave the box unbuttoned for airing, and the plastic in the cold becomes brittle, and an accidental impact can split it.
- 🧼 Cleanup: Wash the box with a soft sponge without abrasives so as not to scratch the plastic.
- 🔍 Inspection: Once a season, check the integrity of the ventilation channels for blockages (web, down).
- 🔩 Puff: Check the tightening of the bolts of the box attachment to the floor of the boat, as the vibration weakens them.
Regular maintenance and proper wintering increase the service life of the box by 2-3 times, preserving its protective properties and appearance.
Comparison of finished solutions and self-manufacturing
Many boat owners are thinking: buy a ready-made box or make yourself? Furuno, Moramar Or specialized models from boat equipment manufacturers, they pass vibration and leakage tests, and they are priced on the basis of quality assurance and exact compliance with standards.
Homemade versions of plywood, glass-coated or recycled canisters look cheap, but often lose in reliability. Plywood swells, metal rusts, and plastic canisters crack in the cold. However, if you have modeling skills, you can create the perfect box for a particular boat configuration.
The main advantage of the purchase is the availability of certificates and compliance with GIMS standards. Inspectors may require a certified battery storage site, and a homemade structure may not pass inspection, especially if the boat is subject to registration.
Economic feasibility
The cost of a simple factory box starts from 2000-3000 rubles. The cost of materials for self-manufacturing (quality plastic, seals, locks, tools) often approaches this amount, but it takes time and skills.
GIMS requirements and water safety
According to the rules of registration of small vessels, the battery must be securely secured and protected from water and short circuit. Battery box. The lack of protection may be grounds for a fine or a ban on exploitation.
Fire safety is also important to consider: In the event of a boat fire (which happens when fuel leaks), an open battery can cause a spark, and a closed metal or special plastic box reduces this risk by isolating sparkling contacts from gasoline vapors.
Remember that the weight of the battery affects stability. Properly installed and fixed in the box cargo in the center of the diameter of the boat improves its behavior on the wave, making the swing smoother and more predictable.
Can I use a regular plastic container from a hardware store?
Technically, you can if it's made of frost-resistant plastic and has a tight lid, but these containers don't have ventilation, which is dangerous when charging, and their latches often break in the cold or from UV radiation. It's better to use specialized solutions.
Do I need to drill holes for ventilation if there are none?
Yes, if you use lead-acid batteries, the holes should be located at the top of the side walls and have protection from direct water (visors or curved tubes). For lithium (LiFePO4) batteries, ventilation is less critical, but desirable for thermoregulation.
How to secure the box if there are no fastening elements in the boat?
Use rattle slings that are thrown through the box and attached to the leer rings or rim bolts on the transom, the main thing is to eliminate horizontal displacement. You can also use large-area Velcro straps that are glued to the floor of the boat with special PVC glue, but this is less reliable at high wave.
Does the box affect the PVC boat warranty?
The box itself doesn't affect, but the way it's attached can. If you stick the box to the floor or drill a trawler for bolts, the manufacturer can unwarrant these knots. Use soft linings and standard mounts.
What size of box to choose for a standard battery 55 hours?
A standard 55 Ah battery has dimensions of approximately 242x175x190 mm. The box should be at least 3-4 cm wider and longer, and 5-7 cm higher to accommodate terminals and wires. The optimal internal size is about 280x220x250 mm.