Islands & diving
How to Prepare for Dealing With Limited Power Supply and Charging Options While Diving on Remote Islands.
This evergreen guide helps divers anticipate, conserve, and manage limited power on remote islands by planning chargers, selecting efficient gear, and timing dives to maximize equipment reliability and safety.
August 06, 2025 - 3 min Read
On many remote island destinations, power can be sporadic, and charging stations may be scarce. Divers who plan ahead reduce stress by choosing low-energy equipment, carrying compact power banks, and understanding local electricity standards. Before departure, map out potential charging points at lodges, dive centers, and marinas, and confirm the availability of outlets during your stay. Pack adapters suitable for the region and test them with a quick circuit check at home to avoid fuse trips on arrival. Consider the rhythm of your diving days, and build a charging schedule that aligns with surface intervals, meal times, and night dives, so essential devices stay ready when needed.
Your gear choices can dramatically affect energy use. Favor compact, energy-efficient dive computers, compact chargers, and USB-C devices that fast-charge without overheating. Bring spare batteries for critical items such as action cameras and lights, but only in accordance with local regulations. Use a hands-free charging strategy whenever possible—dock your flashlight and camera batteries while you rest or during surface intervals. When you’re away from outlets, conserve by turning off nonessential electronics and enabling airplane mode on your phone. Finally, store fully charged backups in a dry, protected pouch to prevent moisture damage and ensure immediate availability when a charger isn’t reachable.
Building resilience with compact, efficient gear and smart habits.
A practical approach to limited power starts with a realistic assessment of daily energy needs. List every device you intend to use, from dive computers and regulators to cameras and lights, then estimate consumption in watt-hours. This allows you to identify the true number of charging cycles you’ll require between shore visits. Create a simple rotation plan that alternates charging among devices, avoiding simultaneous high-load sessions. Consider investing in a compact solar charger for longer stays, provided it’s rugged enough for salt air and humidity. Finally, practice the routine before you depart, ensuring patience and discipline during the actual trip.
On arrival, verify the local electrical system’s quirks and adapt your expectations accordingly. Some islands rely on single-phase power with inconsistent voltage, while others offer limited outlets in guest rooms. Use a portable multi-socket strip with surge protection to maximize a single outlet’s usefulness while protecting sensitive gear. Always switch off chargers when unplugging devices to prevent drain and heat buildup. Maintain a light touch with your gear to minimize wear and tear, and keep a dry bag ready for electronics during boat transfers. If possible, coordinate charging windows with your guide’s schedule to avoid conflicts with shared facilities.
Practical routines to keep devices ready and safe.
Efficiency begins at the device level. Choose low-power dive computers that run on long-lasting batteries, and prefer LED dive lights with adjustable brightness to extend runtime. Charge devices in a shaded, ventilated space to reduce heat generation that can shorten battery life. Carry a small power bank rated for rugged use, and keep it sealed against splashes. When you surface, prioritize cooling off electronics before recharging to avoid thermal stress. Keep an organized charging station aboard or at your lodging, with clearly labeled cords and a routine that prevents overlapping draws.
Another cornerstone is mindful consumption. Don’t leave cameras recording overnight unless necessary, and enable power-saving modes on all devices. For cameras, use memory cards with ample capacity to reduce repeated writes, which lowers energy drain. If you use a drone or action cam, pre-plan shooting windows to minimize run time and recharging needs. Document trips with a consistent file-management habit, transferring footage to a laptop when you know a stable power source is forthcoming. Practicing restraint protects your gear and ensures you can complete your underwater storytelling without energy anxiety.
Shelter, storage, and environment-friendly charging habits.
Establish a predictable daily routine that integrates charging with your dives. Start by charging essential devices first—computer, lights, and a spare battery—while you prepare for the day’s dive briefing. Use a weather-resistant case to protect electronics from splashes, and store batteries in a dry pocket away from heat sources. Develop a fallback plan for lost or delayed power, including a backup lighting option and a secondary timer. When diving at dawn or dusk, plan for lower ambient temperatures, which can affect battery performance, and compensate by timing critical recharges after the sun is high.
Emergency preparedness should be part of every itinerary. Carry a basic power toolkit: spare fuses, a compact screwdriver, and a small set of adapters that fit regional outlets. Maintain a laminated checklist that includes device model numbers, battery types, and charging times so you can quickly assess whether you’re within safe limits. Share your plan with your dive operator and travel companions so everyone understands the charging constraints. If a power outage lasts longer than expected, switch to lower-energy activities such as shore snorkeling or beach exploration while keeping devices in a cool, shaded place to preserve life and function.
Practical tips to stay prepared and safe underwater and ashore.
Protecting gear from salt, humidity, and accidental splashes is essential. Invest in waterproof pouches and silica gel packs to absorb moisture inside cases. When charging in humid climates, ensure outlets are off the deck or indoors to reduce the risk of water exposure. Dry storage areas help prevent corrosion on metal connectors and ensure reliable contacts for future charging. If you’re sharing space with others, label your cables clearly to avoid accidental disconnections. Regularly inspect cords for fraying and replace damaged segments promptly, as a small fault can lead to larger electrical issues at critical moments.
Consider sustainable charging habits that respect local resources. Opt for energy-efficient devices, and limit the use of high-draw cameras during peak sun hours when solar conditions are favorable for recharging. If a lodge provides a communal charger, coordinate with others to avoid peak-time congestion that can cause overheating or blown fuses. Collect data from your stay about which outlets work best and at what times, creating a personal reference for future trips. Respect power quotas where they exist, and avoid extending stay beyond the time necessary to complete essential dives.
The first rule of energy management is clarity. Know exactly how many devices you carry and understand each unit’s recharge profile. Create a simple schedule that prioritizes critical electronics, such as your dive computer and a main light, while leaving nonessential gadgets on standby. Pack a compact emergency kit with a spare battery for your largest device, a small solar panel, and a weatherproof pouch for safe storage. Remember to flood-test your charging setup in advance, ensuring compatibility across outlets and voltage ranges. Staying organized reduces stress and helps you finish trips with reliable electronics for memory-making and safety.
Finally, cultivate a flexible mindset. Islands evolve, and power availability can wax and wane with weather, tides, and infrastructure issues. Embrace patience, adjust plans when necessary, and communicate changes to your dive guide promptly. Arrive with a plan, but remain adaptable to energy realities. By treating power constraints as a challenge rather than a problem, you unlock smoother dives, steadier filming, and safer experiences for yourself and your companions, ensuring your remote-island adventures remain richly rewarding.
